I recently did a PI swap on my 1997 GT, took it to the track and could not run below a 15.7. Before the swap I ran a 14.6 at best. It feels like the car has no power in the low end.
atm im running a 89 tune for the NPI motor, would this make it run bad with the PI parts?
Did you check the cam timing carefully as you put everything back together?
Did you get the ECT sensor hole tapped and installed ? and are you using the 97 MAF ?
You probably just need a tune unless you have something else going on ? is your check engine light on ?
X2
I had to edit this and ask. Why if the vehicle was running so bad would take it to the track and race it?
You're running 89 octane after the headswap? Is it pinging?
Mine would ping like an MF if I didn't feed it 93 after the headswap. I'm sure you'd be hearing the detonation if this were the case, though.
I would say its either a tune issue, or as dumb as this may sound, you may not be used to the power yet and just need more practice running it at the track. If that makes any sense
I dotn have any low end power from a dead stop at a stoplight and flooring it in first(auto) I cant spin the tires
Did you time the cams or just install so they don't hit the pistons? Big difference there......
Yup, you definately have to set the cam timing correctly. As mentioned, a compression test of all 8 will tell you what's going on. It absolutely sounds like the cam timing.
Did you time the cams or just install so they don't hit the pistons? Big difference there......
I want to see your time slip for the 4banger.... I got a 91' 4cyl that could not beat it's self out of a wet paper bag.
of course I degreed the cams and crank before I put the chain on. Going to do a compression test tommorow.
I haven't loaded the timeslip but here's a video of that 12.26 pass: P1010046.flv video by bhuff66062 - Photobucket
I enjoyed this race a lot more, though it wasn't my fastest. You can definately hear it is a 4cyl in this video.
P1010075.flv video by bhuff66062 - Photobucket
I guess if you really want, I could upload the timeslip, but I always thought the video was better evidence and more fun to look at.
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