So I dyno'd my car yesterday on a dynapack dyno and my numbers were 157.7 hp and 150.8 tq. The car is completly stock mechinical wise and I think the exhaust is pretty rough. The car ran quite well and had nice curves but they were just a little lower than i expected. Do these numbers seem right?

 

when was last tuneup?

 

Somebody posted this a while back. I'd say you are losing power. I would check compression and also check for clogged cats.

 

well here is my chart. They look exactly the same except that that one is about 10% higher

 

looks about right for everything being stock. it came stock with 185hp at the flywheel

 

yeah. those cats have to be crappy. Pull em out and shove a broomstick and brake the cat's guts. Some gutted cats will let her breath a little better.

 

I find the stock mufflers are VERY restrictive. On my n/a, getting rid of the cats showed no gain on the butt dyno even when they were partially clogged, once I removed the muffers alone though, a whole new world opened up from 4000rpm above.