Went to the track last summer, it was hot! Maybe around 105 outside.


About a half way down the track I was told a little puff of black smoke came out and from that point anytime I was driving the engine would start studdering around wide open throttle.

It does not matter is I turn the boost down to 6 psi or 16psi. Car runs great otherwise, its only at WOT where there is problems. Its also fine if it's in boost.

I replaced all the ignition coils, spark plugs and gaped them to proper clearances.

Mods:
Greddy TT
fully built engine
HKS VPro


Everything was fine before I went to the track.

Ran a scanner and the following codes came up:
P2135 (Throtal/pedal position sensor switch)
P0223
P0123


Lots of smart guys here, please help..Thank you

 

anyone?

 

Sounds terminal. Trade it in on a GT-R

 

sorry, not the answers I was looking for

 

does the same to me sometimes when i do a pull starting in 3rd, not all the time just every once and awhile.

 

I'm sure you already checked, but the other two codes are throttle sensor related as well.

P0223 Throttle/Pedal Position Sensor/Switch B Circuit High Input
P0123 Throttle/Petal Position Sensor/Switch A Circuit High Input

 

one of my customer brought his car into my shop couple weeks ago with a p2135 and p2138 code. replaced accel pedal asem with new tps on it, works fine now after tps re-learn. didnt happen to see the other 2 codes you mentioned thou.