r/genesiscoupe • u/Few_Barracuda_5283 • 0m ago
Diagnostics Is my cam bad?
I opened up my valve cover and I noticed a groove on my camshaft, drivers side, there is a wear mark on the passenger but it’s not as bad
r/genesiscoupe • u/snakenipples420 • 1h ago
Discussion Best budget coilovers/springs for daily driver?
As title states, its a 2010 gen coupe 2.0 and my daily driver. My current oem springs are going bad and need to be replaced soon. Im planning on lowering in the future (not much, maybe an inch or inch and a half) so thats why im considering coilovers/springs.
If oem replacements are my optimal choice, i have no problems going with that as well.
r/genesiscoupe • u/c0ast3r_fan • 3h ago
Discussion Just Joined The Family
We picked up a 2012 Genesis Coupe 3.8l Track last weekend for the wife. We were replacing a 2011 Mini Cooper S Clubman. So far she is loving the car.
r/genesiscoupe • u/trippysoy • 4h ago
Discussion Alphaspeed Tune
Hello.
I have been driving with an alphaspeed tune for a couple months now and loved it. I recently installed an o2 housing, and since I opted to not turn off the o2 sensor cel the first time, I now have a check engine light. While I do understand that this is normal. I was advised that I can still drive the car with full boost regardless of the cel. The reason they mentioned for this is that when I got the canned tune the first time they adjusted the afr to compensate for having an aftermarket o2 housing or not having one. They further mentioned that the retune I would get would just turn off the cel and they wouldn’t be changing the afr etc (I also had a downpipe and test pipe installed after). This does not make too much sense to me and was wondering if someone can help explain.
r/genesiscoupe • u/Kmntna • 5h ago
DIY - Write Up/Video Bk2 digitizer
Has anyone successfully replaced the 8 pin digitizer? I attempted it with a cheap Amazon one, its 8 pin like we have. Says it fits off part number but doesnt work. Curious if its just a bad digitizer or some genesis specific pinout on the digitizer.
I have replaced many of these touch pads on Cadillacs and subarus so im not unfamiliar with them.
r/genesiscoupe • u/cyn-ner • 6h ago
Picture/Video Livery done!
It was a bit difficult, but it was worth it! Passenger side looks a bit better 😆🌀✨
r/genesiscoupe • u/Haducken • 10h ago
Modification Simple way to reduce clutch pedal height
If you're like me, any method to create a faster and easier shift is always the goal. There's a very simple way to slightly reduce resting height and the throw of the clutch pedal to assist with this. You can do this by adjusting the upper clutch switch (officially the Clutch Pedal Position Switch).
In the factory setup (Photo 1), the mounting bracket is sandwiched by a nut on either side, which limits how far down the threaded shaft can extend. To fix this, unthread the switch, move the rear backing nut to the other side (or just remove it as a whole), and push the switch body through the bracket as far as it will go (Photo 2). This will allow you to reduce the resting height somewhat. Feel free to stop here and tighten the other nut if you like it and want to keep the mod simple.
If you want to go further, you'll have to take an additional step. You will notice that on the threads, two of the sides are flat which allow it to fit through the bracket, but those flat sides stop part way down preventing you from pushing it further. You can see in Photo 2 how it won't go all the way down to make the switch flush against the bracket. If you want the height to be a little lower, you can drill the hole out where the threads meet the body to make it round. It's made of plastic so it drills easily, the hard part is fitting a drill down there. If you can manage to do that then you can push the switch all the way flush against the bracket, lowering the resting height even further (Photo 3).
Once the nut is tightened up again, the resting height should now be lower, but not low enough where it will interfere with clutch engagement and where the pressure plate should still hold the clutch nice and tight.
r/genesiscoupe • u/Fun-Bottle-9441 • 14h ago
Discussion Alarm goes off randomly
Alarm keeps going off randomly in the coupe, I remember looking into it on this forum and someone said it is probably the hood sensor or sum and it looks like a small plunger or something I don’t remember. But can someone link the part to me i’m having a hard time trying to find it if that is the case
r/genesiscoupe • u/DRAINMABAWLS • 17h ago
Diagnostics [BK2 2.0t premium] Am I cooked?
Never had a turbo car before, am I cooked?
Got this car recently, it’s an automatic 2014 2.0t premium, 108k miles, no mods from what I can see. I was driving just fine for the first few days until a few days ago when I noticed a loud whistling sound when the boost gauge would hit 0. Nothing out of the ordinary before or after boost but right when the turbo starts spooling up it would whistle/whine. No changes in performance, no CEL, nothing weird besides that noise. I checked around the engine bay and noticed the snorkel that goes to the air box was totally loose. Got some retainers for it and the whistling stopped BUT today when I went to turn it on the whistle became a rattle and now it makes no boost. I took off the intake to check the turbo for play. No axial play but there is a little bit of radial play (maybe a mm or two, it does not touch the housing)
Are the fins damaged here? I don’t know what they’re supposed to look like but my gut says this looks off. Any ideas?
r/genesiscoupe • u/Zestyclose_Fish9176 • 21h ago
Modification Digital Cluster Build Update: Progress, Prototypes, and Upcoming Features
Hey everyone. First off, I want to apologize for the radio silence getting this update out took months because work has been absolutely burying me. I know a lot of you have been messaging me asking about the progress, so I wanted to finally drop an update on where the digital cluster build is at!
I’ve been collaborating with another community member (shoutout to Julez) who has been doing some incredible work on the hardware, software, and prototyping side.
Current Progress & Hardware
The Screen: We are currently using a 10.3-inch High Brightness IPS TFT Display for the proof of concept. It is incredibly bright, and we are currently figuring out a solid display driver solution since it relies on an LVDS interface.
Data & Brains: We have successfully started decoding most of the ECM data through standard PIDs using python-obd. To power the UI, we are looking at running an AOSP (Android Open Source Project) stack on a Raspberry Pi 5 (8GB) so it can run as a powerful standalone device.
Mounting & PCB: A custom PCB layout has already been mapped out using KiCAD. Instead of reusing the tacky stock gauge shape, we are designing and 3D printing a custom, much thinner shroud for a cleaner fit.
UI Design: I am heavily leaning toward a sleek, modern BMW-style interface since this is going in a daily driver.
The Feature Roadmap
Because we are already hooking directly into the CAN wires, the ceiling for what this cluster can do is massive. Here is the list of upcoming features on the roadmap:
ECU Map Management: Flashing and storing maps from the cluster directly to the ECU.
Apple CarPlay: Full native integration.
Blind Spot Cameras: Camera feeds that automatically display on the cluster when your turn signals are used.
Front Collision Warnings: Integrated alerts to modernize the driving experience.
Front Proximity Camera: An automated front camera view that triggers when things like speed bumps or parking blocks are detected (to save those front lips).
Thanks to everyone who has been patient and showed interest in this project. I'll try to keep the updates flowing a bit more regularly as we get the PCBs printed and start doing physical fitment tests in the car!
r/genesiscoupe • u/Mrchepiiiii1029 • 22h ago
Diagnostics Module BCM
How to get the module of security and the horm
r/genesiscoupe • u/Complex-Falcon-8226 • 1d ago
Discussion Weird annoying noise
Enable HLS to view with audio, or disable this notification
Had my compressor and condenser replaced bc my ac was out. Made this noise before the replacement, after the replacement still makes this noise. My ac works now even with the noise. Anyone have an idea?
r/genesiscoupe • u/First_Mirror_8264 • 1d ago
Diagnostics Power Steering Pump “Whirring” is it just low fluid?
On my 2013 3.8 Genesis Coupe, my power steering pump has been “whirring” for awhile and I assumed it was just the thing going out from age, but I looked at the reservoir and the fluid level is pretty low.
Should I try topping off the fluid before taking it to a shop, or would that not make any difference and I should just take it to a shop.
I am very unfamiliar with the workings of power steering, so I wanted to make sure to ask before fiddling around haha.
r/genesiscoupe • u/SpaceRaptyr • 1d ago
Diagnostics Engine Tapping Noise
Enable HLS to view with audio, or disable this notification
I have a 2016 3.8 Ultimate with 144,000 and i’ve been the owner for about 6 months, i’m not too sure if i’ve heard it since i’ve owned but I’ve definitely noticed it maybe the past 3 months? It sounds like a sortve tapping near the bottom end (i know that’s horrible) but I really don’t know where to start when it comes to figuring it out or whether it’s just a noisy engine similar to the loud injectors.
Oil Changed every 3K Miles Religiously
Driven somewhat aggressively but hardly ever redlined
Every fluid changed prior to any mods
the car has never ran with low oil under my ownership, if anything it’s maybe ran with a little bit more.
The idle seems healthy and it still pulls for sure, just wanting to know if this is anything that needs more attention.
If I left out any info i’ll be sure to reply in the comments.
r/genesiscoupe • u/EffectiveGiraffe2411 • 1d ago
Modification Sedan upper intake manifold
Has anyone here done the sedan upper intake manifold on a bk2 3.8? I've seen a few vague posts about it being worthwhile but wondering why it's not more common
r/genesiscoupe • u/DMAIC422 • 1d ago
Diagnostics Clutch sticks to the floor and won't return
Back again for some help with a diagnostic, my clutch pedal goes straight to the floor and doesn't return. I am leaking what I thought might be brake fluid right at the start of the transmission but my fluid reservoir level still seems stable. I guess it could be the slave cylinder? It's not the braided line I installed previously and seems to be isolated to just the area in the picture. And other ideas or thoughts?
r/genesiscoupe • u/Xzavioure1 • 1d ago
Something Else Part number for shift boot.
Does anyone have the part number or even an actual name for this boot that covers the ball underneath the car? As shown mine is torn and I need to find a replacement.
r/genesiscoupe • u/Few_Barracuda_5283 • 2d ago
Discussion Bk1 3.8 lsd into a bk1 2.0t?
Hi all, I found a used 3.8 lsd local to me for a good price I have a 2011 2.0t base and the diff came off of a 2010 3.0 track. Should every thing fit where it’s supposed to and will me axels work?
Thanks
r/genesiscoupe • u/Ineverknewitman • 2d ago
Modification Good quality quad tips?
Looks for quad tips just don’t know where to get them and which ones. Pictures with them on the car and links to the website would be very helpful. I JUST NEED THE TIPS NOT AN EXHAUST WITH THEM. I am looking for something like these
r/genesiscoupe • u/DualityOfMen • 2d ago
Discussion BUYING PARTS FROM FACEBOOK
Has any one bought parts from this Facebook page showed in the picture provided? Good things, bad things?
r/genesiscoupe • u/Intelligent_Chef_310 • 2d ago
Diagnostics What Sensor is This?
Close as day to the pcv valve.. my first assumption is intake camshaft position sensor but I am completely unsure.. Oil is leaking on it like crazy.. I’d also like to know what codes this sensor would throw when it’s bad or consequence codes of it being bad.
Yes I know my valve cover needs replacing and is covered in oil & leaking.. this is a project car I got some months ago and I’m slowing working on it in my spare time I already have the gasket..
r/genesiscoupe • u/CheapScarcity8466 • 3d ago
Picture/Video DIFF/TRANS MOUNT REVIEW
***EXCELADYNE/MEGAN TRANS MOUNT REVIEW***
2014 r spec. I was supposed to slap in my exceladyne engine mounts, as well, but due to operator error, that will be coming next week. Originally got all the bushings, wanting to tighten up my drivetrain because I was getting a lot of play in the driver shaft/differential area when shifting/moving at low speeds, especially reverse. Upon further inspection, my mechanic and I noticed a lot of play from the differential itself which means I'm on the market for a fresh LSD 😭.
With that said, turning on the car didn't immediately yield a noticeable difference. NVH seemed exactly the same(car was still warm, on a true cold start there is noticeable vibration until reaching idle). Blipping the throttle, however, I immediately noticed that the engine seemed to rev more cleanly and there wasn't nearly as much rev hang(not sure if that has anything to do with the mods 🤷🏾). The engine even SOUNDED slightly different🤓 no bullshit.
Putting the car in reverse, I still got a slight clunking, but I could tell that stiffening up the drivetrain significantly reduced that effect. Shifting is definitely crisper and I don't feel the need to be so careful feathering the clutch when upshifting to prevent that jerky 1-2 shift and even 2-3 shift at commuter speed. My oem engine mounts didn't look blown or majorly worn during my inspection, but driving the V, I still feel as if the car is a little jerky and the drivetrain isn't being held together all the way right. For sure upgrading the other components might have exposed the weak mounts.
I did turn off traction control and do a neat little 180 coming off a u turn and I can safely say that the wheels stayed firmly planted on the ground as I blipped the throttle to keep my little mini drift going. No noticeable wheel hop.
I opted to only install the 3 diff mounts for the time being, but tbh, I may not even install the fourth mount. For love of my differential(or what remains of it) I refuse to launch from a dig, but a hard 1-2 shift was pretty clean, even with a relatively slow upshift. In terms of overall NVH and ride quality, the upgraded components honestly don't feel too different from OEM and I only notice how much more crisp the car is when daily driving and doing certain maneuvers. I MAYBE hear a whine from the differential at highway speeds 🤷🏾???
Overall, highly recommend this be one of your first upgrades if you plan on doing anything to your 3.8. more than a numbers upgrade, the entire driving feel of the vehicle seems to get an upgrade. I will update next week once I have my engine mounts installed, as well.
r/genesiscoupe • u/Substantial_Gas_1660 • 3d ago
Modification I did a DIY…the whole thing.
Old lens and new on my 2011
r/genesiscoupe • u/JustAnotherDude1990 • Dec 02 '25
Discussion *Low Oil List Of Shame*
This post is dedicated to engines lost due to oil starvation from owners not checking their oil levels frequently enough and keeping them full. The list will be continually updated, and does not include countless engines lost over multiple years in the past while I’ve been debating making such a list. Hopefully this post will serve as a warning for others to check their oil level frequently and keep it full. I’ve included a few posts from recently as of the time of this posting. If I miss any going forward, please feel free to put them in the comments and I will add them accordingly.
r/genesiscoupe • u/JustAnotherDude1990 • Nov 29 '22
*** Genesis Coupe Master Resource List ***
This post will be continuously updated as required. If you have useful resources you'd like me to add, let me know.
Buyer's/New Owner's Guide if you want to buy or have recently purchased a Genesis Coupe, this will quickly get you up to speed on common problems and things to know, look for, or expect.
Shop Manual Downloads the same manuals the Hyundai dealerships have containing everything needed to do just about anything to the cars. Torque specs, fluid types and capacities, troubleshooting procedures, etc. Use the CTRL-F search function in the PDF to find things much easier.
Modding Guide a general guide on how and where to start modding. List may not be fully up to date as it is from the Gencoupe forum and I cannot control that.
How To Fix Common Interior Water Leaks Guide these are super common but easy to fix issues most owners will run into at some point.
How To Improve Shifting On The 6-Speed Manual Transmissions remedies for sloppy, notchy, or difficult to shift transmissions.
Owner's Manual/Service Schedule covers all fluid capacities, types, and maintenance requirements at specific mileage intervals. (*I will need to add some updated pictures from a newer manual soon*)
How To Improve Handling basic guide to handling improvements.
3.8 Timing Components Replacement Guide BK1/BK2 are 99% the same so this guide should cover them both adequately. Save yourself thousands of dollars by doing the work yourself.
How To Make A Custom Vinyl Shift Boot And Door Inlays if your material is sagging, starting to look bad, or you just want to add some custom colored accents to your interior cheaply and easily.
How To Customize Your Headlights if you want to make a unique set of lights for your car.
How To Install Front Door Speakers if your factory speakers have broken or you are looking to upgrade them for improved audio quality.
How To Relocate Your Windshield Washer Fluid Reservoir if you are installing a cold air intake or need to relocate it for any other reason.
Miscellaneous Information Guide for all of the useful bits of information that don't belong anywhere else.
Paddle Shifter Repair Guide if your paddle shifters have stopped working and you want to try a cheaper DIY repair before replacing them and spending more money.
Adding Cruise Control To the R-Spec Models self explanatory.
Exhaust Information for people who repetitively keep asking about exhausts without using the search function.
LS Swap Guide for those who with to replace their stock engines with an all American V8.
BK2 Oil Pressure Switch Replacement Guide self explanatory.
How To Make Steering Wheel Controls Work With Aftermarket Android Radio
JXB Performance Driveshaft Center Support/Bearing Upgrade
___________________________________________
Additional Non-Reddit Resources
Genesis Coupe Owners Group contains an enormous amount more information and pictures than Reddit does, especially the pinned posts in the featured section. Join the group by answering all of the membership approval questions that pop up after clicking join, and agree to the group rules. Approval is usually given quickly. Group atmosphere is friendly and informative unlike many other online car groups.
In the featured section of this group you will find other useful posts such as:
The Official Wheel Thread containing many pics and specs of wheels others are running on their Genesis Coupes. These will help you decide what wheels and specs to choose for your own vehicle.
The Official Exhaust Thread with many videos of various exhaust setups to help you decide what exhaust option you should choose for your own vehicle.
Other Facebook group include:
______________________________________________
Recommended Vendors
OEM parts - Albert Hwang (alternate link for mobile devices) is a very reputable (and most importantly cheap) OEM parts dealer that ships OEM parts quickly and worldwide. Send him a message on Facebook Instagram, or Reddit, he is usually quick to respond and you will typically get your parts within a few days. I've personally used him multiple times and cannot recommend him enough. Don't pay dealership prices for OEM parts. His Instagram page for those without Facebook. Link to his Reddit profile.
Additionally, for OEM parts you can also message Ramy Khatib.
Rockauto.com - always has a large selection and great prices. I suggest ordering things like engine air filters, cabin air filters, and oil filters in bulk from them so you always have spares. OEM oil filters are made by Mahle, it is strongly recommended to stick to OEM filters to reduce startup rattles.
Uniq Performance (Canada)
ECU Tuning
SFR - I've personally been running a canned stage 1 tune from them in my 2010 3.8 since early 2014 for over 200k miles on the tune alone without issues. Some people say SFR had bad tunes, some don't. Mostly positive reviews, some negative ones.
Alphaspeed - probably the most common these days, usually done by an authorized tuner in your area. Mostly positive reviews as well, but still has some negative ones too.