LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

weak showing

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Old 12-08-2006, 08:59 PM
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weak showing

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?
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Old 12-08-2006, 09:05 PM
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Ya I would say that is pretty low, people are putting down similar or even better numbers stock...
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Old 12-08-2006, 09:24 PM
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stall is killing it..wat brand? and size?
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Old 12-08-2006, 09:31 PM
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Do you have a tune?
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Old 12-08-2006, 10:13 PM
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Even without a tune there should be more than that. Even with a crappy stall you should have more than that.
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Old 12-08-2006, 10:23 PM
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Originally Posted by Zachz28
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?
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.

Last edited by wrd1972; 12-08-2006 at 10:26 PM.
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Old 12-09-2006, 01:04 AM
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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?
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Old 12-09-2006, 01:07 AM
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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?
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Old 12-09-2006, 10:24 AM
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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.
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Old 12-09-2006, 12:28 PM
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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.
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Old 12-10-2006, 03:20 PM
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could the exhaust relly be costing 30-50 hp?
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Old 12-10-2006, 07:17 PM
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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?
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Old 12-10-2006, 07:36 PM
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yeah..

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.
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Old 12-10-2006, 08:02 PM
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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.
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Old 12-10-2006, 11:50 PM
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hmm what did other cars run? maybe dyno goto track and give us some numbers
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