I was running a dry 1st stage that was surging, and had a full WS. Now the 2nd stage was on a RPM activation SW only (normally small hits). So we decided to swap 1st stage to 2nd stage and see if problem went away, and yes it did, as nozzles had got tweaked out of wack on 1st stage. Then I was going for a hard run with the bigger hit (170rwhp) engauging from the 2nd stage with out a way to stop spray at upper rpms. So then i hit the rev limiter and the pcm cut the fuel, and a high rpm lean backfire occured. After that trying to start the rpms would go up rapidly with no pedal. Also got numerous codes for MAF, TB, TPS (have records if ya need them). So today, I change out the MAF and the TB, and the rpms still shoot up. I logged this and I see that the TPS is stuck at 15% at all times. was a little hard starting prob because of the 15% TPS and still getting the cam sensor code (cam code will fix later). Anyway, do you have any idea what is wrong here? Could the pedal postion sw be comprimised from me nailing it really hard?
Robert

 

So you changed the thottlebody, and its still reading open15%?

Might want to remove the intake for close inspection, a crack or air leak might also cause the rpm's to climb.

 

Yea, Vinny I just found it. Was hard to get my hand back there but a chunk of intake is missing, lol. Oh well, was going to upgrade any how to a 90/90. Anyone have a used one for sale?
Robert