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Discussion Starter · #1 ·
Hello everyone, I'm a new owner with an 2011 GSR..I've been lurking for a while but I never posted here before..

My car has about 6k miles on it. Dealer recently changed my Ecu because my Ecu was giving me weird SES lights with Error codes with no reason.. Car is bone stock and dealer was checked everything..It turns out I had a bad ecu..

Anyways, ever since they replaced the ECU car feels little slower than it used to be, like it's not boosting or clutch is slipping or something but I highly doubt I lost my clutch since I never lunch the car or anything and when I rev the engine, idle seems to be dropping little slow..like it's dragging . There is no SES or CEL, though.
I've searched but couldn't find my answer here and there.:confused:


Any help would be appreciated .
Thanks
 

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maybe after the ecu was replaced they do do basic setting on the electronic throttle body to know how much is open/close. If the throttle body does not know where the limit is it might cause the issue.
 

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Car doesn't give me that "umph" feel, if that's what you mean. It used to pull harder on WOT I guess ..and idle feels like it's sticking it drops really slowly???
If you do like I say above and the rpms don't jump while the car still moves at the same speed it's not the clutch. So it's either a really rich tune on your new ECU, or they may have replaced your fuel relay.
 

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Discussion Starter · #8 ·
Thanks for the info, yes I also don't think it's the clutch considering the mileage on the car and the way I drive it. before they changed the ECU I told them to check my relays thinking that's the problem I had..and they said they all tested fine. I'm guessing it's the tune, it feels like an NA car, I have some good acceleration in lower gears but that's about it..I guess my best bet is to put a boost gauge and see my boost levels and take it from there
 
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