ok i have the car in my sig..........my uncle has the exact same car came and everything just a stall and rockers..... he is killing bold on ls1 why im i getting raped by them .... my tune is From TBI chips... his ed wright

 

Need more info. Last time you had a tune-up, does the car miss, does it bog, it it lean, is it rich, do you have a scan we can look at, does your car still have a cat, last time you cleaned the MAF, 02 sensors, coil, opti.

That's a good start.

 

lol 93 is speed density no maf......uh put the engine in july runs rich......no cats no bog no miss all new plugs wires

 

Sorry I'm just learning these cars, I'm not full up on which models are which. I do know late model GM cars though, very well.

I notice you said the other car has a stall. That alone can make a big difference on a modified car. What do you mean you say "uh put the engine in july runs rich"?

Have you ran side by side with the other car? Have you ran at the track? If so, can you post your 60', ET, and mph? Can you post a scan of your car?

You also didn't answer all of my questions from my first post.

Help me help you.

 

First off, what type of induction you have. Second, check to see if the pcm is retarding the timing, I had the same thing happen to me a few years back with that cam and running rich . I had no idea mine was retarding the timing until, I scanned it and seen it it was pulling the max timing but, it was not spark knocking at all just false readings. A stall would help out a lot, out of the hole only.

 

what did you do to fix it ...

 

Wrong. A good aftermarket stall helps more than just out of the hole. It will keep you in your powerband more resulting in faster acceleration. Does your car have more power at 1600 rpm or at 3200? The stall keeps you there. Plus you have shift extension. Your rpms drop less when the car shifts - keeping you more in the powerband. Thirdly, aftermarket stalls are usually considerably lighter than a stock stall - not even taking into account rotational weight.

 

its probably the stall for the most part. the different tunes could be alot more different than you would expect. does he have better tires? better tires and stall would make a decent difference...

 

Maybe the quality of the mechanic turning the wrench???? That is a BIG variable that had substantial impact. The LT4 intake in your sig says you are not particularly knowledgable if you made a mistake like that. As cast flow wise your 93 intake was actually better due to the lack of the fuel rail crossover. Internally the LT4 intake is just like the later LT1 intakes, if you milled above the ports to make it clear the valve cover rail on the LT1 heads all you did was RUIN an LT4 intake.

The tune is a likely source too and not necessarily the tuner, with a speed density car especially, if YOU make one mistake on the mod list that is all it would take to make the tune wrong.

 

This guy obviously doesn't want much help. He's looking for someone to magically pick an answer out of thin air with his very weak description. People like that irritate me on forums. /rant

 

unbeknownst to you,someone replaced the LT1 in your car with a john deere motor.