i got my car dyno stock and it mad 241whp and 281torque and after i put pacesetter LT and mad z28 tune and some other little things all i picked up is 10 whp and 1 foot pound of torque what is up with that my car is a 1997 z28 a4

 

What do you have for an intake. I think its starving for air. Also what kind of exhaust catback,stock,cutout?

 

What intake setup do you have? What is the rest of the exhaust setup? Any other mods?

 

Same or different dyno? If it wasn't the same dyno it's not a valid comparison...

I'd be looking for a general tuning problem like crappy plugs/wires or iffy optispark. Did they read the air-fuel ratio during the dyno runs? Maybe you're getting some knock retard, false or otherwise.

 

Hit the nail on the head. You need to balance air both in the motor and out. Throw a CAI and you will get a good amount of horspower out of the car.

 

i have the stock air box and i have Flowmaster cat back it is the same dyno my a/f was about 11.4 i have new plugs and wires

 

you need an intake lol....should pick up considerable power.

 

The intake isn't going to cork up 20+ rwhp though, probably won't gain much more than the typical 10 rwhp w/ the intake swap, I think something else is off. Just the tune on a stock car has yielded over 10 rwhp before...

11.4 is on the rich side, send the results and graph to MadZ28 and see what he says, probably want to tweak the tune a decent amount... Course that isn't to say I wouldn't get an intake, they're cheap at $150ish or less from some sources. Somebody posted a company selling copies of the Moroso intake setup for around $130 new if memory serves...

 

ok i will see what madz28 can do

 

Also, what kind of cat back are you running. If you run free flowing headers into a stock exhaust you still have a bottleneck.

Steve

 

isnt that a pretty big drop from stock, especialy with headers, exhaust and a tune. Shouldnt he be around like 290ish hp??

 

i have pacesetter lt with pacesetter y pip and Flowmaster cat back no cats

 

Do you know anyone that could do some data logging for you?

 

With CAI, shorties, and 3 in catback, I only dynoed 272. The stock was 265 at the FW, right? So that's not that far off since it's an auto. Also slightly depends on the gears.

 

no i dont know anyone that can do data logging for me