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DYNO LETDOWN

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Old 10-20-2007, 07:56 PM
  #1  
Tormentor
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Default DYNO LETDOWN

Well I had my new 373 gear installed yesterday and though I'm happy with the performance of it, I am pissed off with my dyno results.
After having the gear installed I had the performance shop doing the install put it on their Dynojet and boy was I let down...
276 rwhp with 296 rwtq. I have the C&L Racer intake along with sct xcal 2 with a Brenspeed 93 tune.
Yes it's an automatic but I was hoping for more.
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Old 10-20-2007, 08:30 PM
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06GT4RAD
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Default RE: Dyno Letdown

Thoselook likerespectable numbers what are you upset about. Just asking but you do realize gears do not add HP right?

Did you bother to take the CAI and tune out and then re run it? That is what you should have done.

Also you need to go easy on those gears for at least 500 miles

Richard
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Old 10-20-2007, 08:33 PM
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07SCGT
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Default RE: Dyno Letdown

Those are good numbers for what you have. I would be happy with what you have. I feel a mod "bug bite" coming on for you now. Welcome to the club I'll get the spray, Armorall that is....
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Old 10-20-2007, 08:36 PM
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Tormentor
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Default RE: Dyno Letdown

I know the gears do nothing but I was hoping the CAI and tune would have given me more, I guess I will have to go with udp's, delete plates and offroad x or h pipe next.
I was thinking of taking the tuner and cai off to have it dyno'd again for a true factory baseline.
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Old 10-20-2007, 08:41 PM
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Default RE: Dyno Letdown

Thanks guys, for the input. Makes me feel a little better, I was thinking my car was a slow stang....lol.
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Old 10-20-2007, 09:00 PM
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moosestang
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Default RE: Dyno Letdown

Everyone says you will lose some rwhp with the gears, not sure how true that is though. You didn't dyno your car stock did you? If not then you have no idea how much the CAI and tune gave you. You probably had 250rwhp stock.
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Old 10-20-2007, 09:41 PM
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TheDarkPath
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Default RE: Dyno Letdown

276rwhp isn't a bad number for only having the C&L racer intake and 93 octane tune. I've also heard that a shorter gear will tend to show a decrease in rwhp on the dyno. With the C&L intake, 93 octane tune, and steeda UDP I put down 287 rwhp and i've heard 8-10 rwhp for the UDP so you're not far off. I probably won't dyno again until I get LTs with a catted H. Then i'll dish out and get a dyno tune. I think I've decided to stop modding after LTs and the spydershaft.
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Old 10-21-2007, 12:09 AM
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cheftjpeck
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Default RE: Dyno Letdown

relax..don't get hung up on dyno numbers.what matters is what your assometer tells ya...my auto was 256 stock.with my c&l cai evo tune and kooks lt header and catted x pipe set up I was 300 rwhp and 304 torque...don't wrry bout ur numbers..just get a s/c and then you will be even happier....good luck
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Old 10-21-2007, 12:16 PM
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Pwny
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Default RE: Dyno Letdown

Autos will have less horsepower than sticks. Just the nature of them!
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Old 10-21-2007, 12:35 PM
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batmobile2005
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Default RE: Dyno Letdown

no stang is a slow stang. we are a fast bunch. insert 300-esque speech here
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