genesis coupe issue - Hyundai Genesis Forum
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post #1 of 6 Old 05-14-2017, 03:33 PM Thread Starter
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genesis coupe issue


i have custome tuned my car with sfr feels great and quick very noticable difference, but when ever i go full throttle the car accelrates very slow jumps to 3500 rpm and accelerates slowly and sometimes it accelerates quickly and the rpm would jump to 5000 rpm can anybody give me an idea whats the issue with the car?and one issue also whenever i go full throttle on D mode the rpm gets stuck at 6500 rpm,FYI the car had the same issue before the tune or any mods.

Last edited by Moe Issa; 05-14-2017 at 03:38 PM. Reason: forgot some notes
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post #2 of 6 Old 05-15-2017, 12:57 PM
'13 3.8 Track
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What size wheels/tires do you have? Maybe your TCS is engaging because it thinks your spinning your tires.

2013 3.8 Track, A/T
Magnaflow CBE dual exhaust
Drop in K&N airfilter
Stance Super Sport Coilovers
Enkei RPF1 18x9.5 wheels (Autocross only)
SFR tune
20% tint
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post #3 of 6 Old 05-15-2017, 01:16 PM Thread Starter
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theyy are 245,40,19 its so annoying i would go full throttle and the car responds very slow,the rpm would go to 3500 rpm and moves slow it happens with traction control on and off
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post #4 of 6 Old 05-19-2017, 07:07 PM
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From what I've read in another part of the forum, when you step on the gas pedal to go full throttle, the car will respond very slowly. Apparently the reason is some kind built in safety to protect from sudden high RPM's. I have the same situation with my GC. What I do to go around this, since I have A/T, I switch to manual shift when I'm at a situation where I want to accelerate quickly. Let's say I'm waiting for an opportunity to make a turn on a turn lane, or I want enter the expressway. I switch to manual mode and the car responds beautifully, as expected. On the turn lanes, I manual shift to 1st gear and take off without an issue manually shifting into the next gears. On the expressway entry, i switch to manual, downshift to 4th gear and zoom.

2012 GC Track 3.8 A/T
Interior mods: Dead pedal/ Illuminated door sills/Steering wheel wing badge/Leather e-brake/ Genesis sedan leather shift knob/Back up mirror display, blue LED foot well lights, LED interior lights, Leather AT shift boot, Leather E-brake handle and boot.
Exteriors mods:Front grill/Trunk wing chrome badges/ Center wheel wing badges/ LED DRL's/Electromagnetic parking sensor/back up cam/ KDM 380 GT badges, Front mesh grill.
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post #5 of 6 Old 05-19-2017, 07:19 PM Thread Starter
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well my main issue when ever i accelrate on D mode and go full throtle the rpm moves and gets stuck at 6500 unless i shift the gear,2nd is when im on the highway or on 5 or 4 th gear and give the car a full throttle the response is very poor the rpm would just go to 3500 rpm and takes its time to accelrate
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post #6 of 6 Old 05-20-2017, 04:19 AM
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So all 4 tires are 245/45/19? That may be the issue as you should have some height difference between front and back.

2010 Red 2.0L track

If the Pharaohs had duct tape, the Sphinx would still have a nose...."
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