Intermittent and sudden loss of power

AnorexicSTI · 05-15-2008, 09:56 PM

I was at the track a few days ago. I have an awesome 3rd session. Car is kicking ass. Everything is dialed in. Next, we do a group photo so the car had to sit for a while. I start it up and go and get gas. The car feels very slow. I think maybe it's just heat soak on the TMIC but I check it and it's not hot at all.

I run my 4th session but the car sucks. I think it's a boost leak but there is no hiss sound. The next day, I drive to the mall. Still low on power. But then on the way back, the power comes back and it's great. I park, run an errand, and start driving home again. Power is gone!

I think it was a super dirty filter (59,000 kms without a change... been waiting to go rotated so I just kept using the crappy stock filter). I change the filter to a K&N drop in. Nothing.

One thing to note is that the plastic pedal "stop" for the gas pedal came out during the track day. I wonder if that allowed the gas pedal to go "further" than normal and that messed up the drive by wire calibration or something.

I reset the ecu's several times to no avail.

Advice?

mug23 · 05-15-2008, 10:05 PM

Have you done any wiring lately? Have you check any ground wire that maybe loose?

Sometimes, loose wires can do that for you.

05-15-2008, 09:56 PM	#1
AnorexicSTI Spec C Club Car: 05 WRX STI - Spec A Fav Mod: Starving my STI Location: Lightweightville, Canada Posts: 1,735 Join Date: Sep 2006 Trader Rating: (11)	Intermittent and sudden loss of power I was at the track a few days ago. I have an awesome 3rd session. Car is kicking ass. Everything is dialed in. Next, we do a group photo so the car had to sit for a while. I start it up and go and get gas. The car feels very slow. I think maybe it's just heat soak on the TMIC but I check it and it's not hot at all. I run my 4th session but the car sucks. I think it's a boost leak but there is no hiss sound. The next day, I drive to the mall. Still low on power. But then on the way back, the power comes back and it's great. I park, run an errand, and start driving home again. Power is gone! I think it was a super dirty filter (59,000 kms without a change... been waiting to go rotated so I just kept using the crappy stock filter). I change the filter to a K&N drop in. Nothing. One thing to note is that the plastic pedal "stop" for the gas pedal came out during the track day. I wonder if that allowed the gas pedal to go "further" than normal and that messed up the drive by wire calibration or something. I reset the ecu's several times to no avail. Advice? This ad is not endorsed by this member. Please register or login to hide this ad.

05-15-2008, 10:05 PM	#2
mug23 Grassroots STI Racer Car: 05 WRX STi Location: Former Bostonian now in U Posts: 597 Join Date: Apr 2005 Trader Rating: (1)	Re: Intermittent and sudden loss of power Have you done any wiring lately? Have you check any ground wire that maybe loose? Sometimes, loose wires can do that for you. This ad is not endorsed by this member. Please register or login to hide this ad.