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car seems slow

well i dont think that the cat is plugged because i dont have one on it lol. Do I need one? also theres no res its open from headers to the mufflers. Btw the o2 sensors are sill in it there is a straight pipe and flex pipe between the two.

Ive done some very extensive searching on multiple forums trying to find someone with the same symptoms i get with the theft codes 1629 1626 but no one has the same symptoms

so here it goes
-car starts fine if its cooled down
-when car gets warm from a hard run security light comes on the next time i start(as long as its still warm)
-security light stays on when i try to start it runs for 2-3 seconds and dies
-if i hold car at 3k for about 5-10 sec it will stay running just fine
-as soon as the car cools off the security light goes away and it will start fine

Its like that saying "drive it like you stole it", but the car really thinks its stolen, lol
 
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I just ran it with the supercharger belt off and got 0*kr so i know its not false now, i am leaning towards fuel problems now, what parameters should i check for fuel problems on my aeroforce and what should the specs be
 
Aeroforce wont be able a huge help, but you could watch fuel trims and injector duty cycle and what they are at.

Fuel pump pressure should be aleast 45+ at idle, you could tape the gauge to the windshield to see if it drops alot at anypoint during WOT.

Does it have a FP rewire??
 
no it doesnt and im showing into the teens on kr its sorta wierd it likes to jump from low number to as high as 14 especially if i goose it from while cruising, is this causeing damage even if im letting off right away ive never let it show kr for more than a second or two
 
what do you think the chances are i have a chipped piston given the kr situation, i ordered a borescope so we will know for sure soon
btw there is no misfire
 
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1.) HOLY "6-8* of kr" on a gen-v 3.4!!!!! chipped pistons is a strong possibility. I dont think rockers are enough.
2.) im not a 3800 guru
3.) hitting that 14* means you probably need new motor mounts
4.) good luck and listen to ffdp he knows what hes talking about
 


update!!!! fixed the pk3 for now i was able to reprogram the key but not sure how long it will last.
KR is only when i mash the peddle below 3k above i have 0kr no matter how hard i press the gas
also im getting a 3.5 pulley, is this nessecary
 
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