I just dynoed the car with the mods in my sig. and it put 267.1 RWHP and 252.2 RWTQ through a A4. Is it just me or that a little low?

 

Ya I would say that is pretty low, people are putting down similar or even better numbers stock...

 

stall is killing it..wat brand? and size?

 

Do you have a tune?

 

Even without a tune there should be more than that. Even with a crappy stall you should have more than that.

 

Pretty low considering the CC503 cam. Should be well over 300RWHP with that setup. Shorties are hurting too, get mids at a minimum or LT's. I would guess ideal would be about 315-320 RWHP.

 

well i know the stall and the headers are hurting me but still this seams low. What could it be? It has a Mad Z28 tune and runs great what could it be?

 

I don't think you could have gone with a weaker exhaust setup... Thats where I would say you are losing a majority of your power. That and a tune would probably help you alot, what was your a/f ratio on the dyno?

 

I would agree your exhaust could use some upgrading. Maybe you could post your dyno sheet as well, it may help us to give you some better ideas of what is going on.

 

The flowmaster and the cats are probably hurting you. Take it to the track and see what it does before worrying too much, because thats what truly matters.

 

could the exhaust relly be costing 30-50 hp?

 

Got any A/F ratio numbers or anything, the tune could be off? Knock retard maybe? Was it a Mustang dyno, if it was reading on the conservative side even for a Mustang Dyno that could explain some of it as well?

 

Yeah something is wrong.. I put down 269 h.p. / 302 t.q. with just longtubes/cai/longtubes on a 2600 stall and flowmaster catback. no cats though.

 

Mustang dyno, no a/f ratio, it has a LT4 knock module, and it was reading good numbers for other cars that pulled on it.

 

hmm what did other cars run? maybe dyno goto track and give us some numbers