anyone else have any other ideas of why my numbers are so low?

 

replaced your 02's lately?

 

yup, 2 new ones with the install, then after the opti took a **** i had them replaced just to be safe.

 

you stated that your MPG are down. I would check for exhaust leaks and/or maybe a lazy O2.. you also sould change your gear oil in the rearend and replace the oil in the trans with some Royal purple.

 

no exhaust leaks, waiting for money to order a scanmaster so i can see what the o2's are doing, i dont see how the fuild would be causeing me to lose power, although its on the list of things to get done just cause of the miles.

 

Another vote for 1.6 RR's. I also had just headers, Hooker catback and CAI. I gained just over 2 mph in my trap speed with the 1.6 RR's. I'm now trapping 105 mph with only headers, catback, cai and 1.6 RR's

Dan

 

well im gonna change my fuel filter, throw the stock rims on and head back to the dyno, see what the numbers look like. i just replaced the pcv valve and found a vacum leak.

 

did u put in a lt4 knock module? b/c i've heard that headers will cause false knock with the stock lt1 module. maybe something to look at if you havent tried that already.

 

hmmm, i wonder if im pickin up false knock from the headers, if the car is pickin up knock this would cause me to loss hp no?

 

yes, by retarding timing.

 

nice, i bet thats what it is, cause the car is loud and the collector hits the bottom of the car, it was disentitized with the tune, but after reading a search i guess that doesnt always do it. gonna give that a try.

 

were is the KM located, how hard is it to swap out??????

 

The KM is on the side of the ECM. Its an easy install, I did mine in about 5 minutes and that's a high estimate.

 

it'll be here tomorrow, gonna install that and my new fuel filter, and head back to the dyno, looking for 290+, hopefull i can get this all straightened out and make the power i should be