Fast 90, NW 90, Meziere EWP, - gains
09-27-2006, 05:26 PM
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Fast 90, NW 90, Meziere EWP, - gains I posted my overall horsepower gains in a different thread. However I realized that on the dyno sheet the two runs shown are significant in that the gains from one run to the other might be of some interest to some of you. For Run#2 I will list only the significant power making mods from Run#1. I'll try to make it as simple as possible.
Run#1 -Original setup and dyno tune. 368.09 HP 359.35 TQ
Run#2 -FAST 90/ NW 90, Meziere EWP, dyno tune. 409.07 HP 386.53 TQ
The tune was done on the same dyno by Vette Doctors about a year apart at roughly the same atmospheric conditions. Other difference in mods that may or may not be significant to power gains are as follows:
Run#1 Mac catted y pipe
Run#2 custom y with Random Tech cats
Run#1 stock SS exhaust (not SLP dual/dual)
Run#2 Corsa cat back
Run#1 24# injectors and tune
Run#2 37# injectors and tune
Run#1 Stock 4L60E, Stock Converter
Run#2 ProBuilt 4L60E, Yank SS3600 Converter
The difference of these two runs are: 40.98 HP 27.18 TQ
Run#1 -Original setup and dyno tune. 368.09 HP 359.35 TQ
Run#2 -FAST 90/ NW 90, Meziere EWP, dyno tune. 409.07 HP 386.53 TQ
The tune was done on the same dyno by Vette Doctors about a year apart at roughly the same atmospheric conditions. Other difference in mods that may or may not be significant to power gains are as follows:
Run#1 Mac catted y pipe
Run#2 custom y with Random Tech cats
Run#1 stock SS exhaust (not SLP dual/dual)
Run#2 Corsa cat back
Run#1 24# injectors and tune
Run#2 37# injectors and tune
Run#1 Stock 4L60E, Stock Converter
Run#2 ProBuilt 4L60E, Yank SS3600 Converter
The difference of these two runs are: 40.98 HP 27.18 TQ
09-27-2006, 06:44 PM
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The new random tech cats should have gained you a couple. The Corsa, maybe 7 or 8. Injectors, probably 10. But then the converter probably took 10 or so away.
You'd still be looking at a 30rwhp gain with just the unported 90/90 and EWP on a mild H/C combo. Damn good pick up.
You'd still be looking at a 30rwhp gain with just the unported 90/90 and EWP on a mild H/C combo. Damn good pick up.
09-27-2006, 07:14 PM
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Actually to be honest with you, when the new cats and corsa were put on the car and I drove it I didn't really feel any difference and I didn't expect to either. It did sound great at full throttle but was louder than I had expected at lower rpm's.
I don't think the injectors did anything but relieve the stock ones from a really high duty cycle and give me room for growth. With the 37#'s they should be at around 80% duty cycle.
The converter is a Yank SS3600, I would think that it's more efficient than stock and if anything gave me a few hp. Either way, both dyno runs were with a locked converter so the converter wouldn't matter.
I don't think the injectors did anything but relieve the stock ones from a really high duty cycle and give me room for growth. With the 37#'s they should be at around 80% duty cycle.
The converter is a Yank SS3600, I would think that it's more efficient than stock and if anything gave me a few hp. Either way, both dyno runs were with a locked converter so the converter wouldn't matter.
Last edited by gruntwork; 09-27-2006 at 07:32 PM.
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10-01-2006, 02:30 PM
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Just to confirm, the FAST was not ported correct? Have been toying with a FAST install, I am a couple of hp under 400 right now, that might put me over but I don't want to sacrifice any low end. Actually, I would prefer to gain on the low end even if I didn't get as much up top.
10-01-2006, 03:21 PM
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Correct. The FAST was out of the box, unported. As far as your low end I didn't see any drop in low end power, it actually eclipsed it down low as per my dynograph.
Oh, and the gains were over an LS1 intake and stock TB.
Oh, and the gains were over an LS1 intake and stock TB.
Last edited by gruntwork; 10-01-2006 at 03:28 PM.
10-01-2006, 05:46 PM
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Originally Posted by offaxis
Great gains!!
Ill have to keep my eye out for you on the island ....
Always glad to see a local guy putting it down.
Ill have to keep my eye out for you on the island ....
Always glad to see a local guy putting it down.
10-01-2006, 06:33 PM
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Nice gains. The majority of your power came from the Fast 90 vs an Ls1 intake. About 10 probably from the EWP, and its hard to estimate how much a tune would give ya(depends if it was off before).
10-01-2006, 08:01 PM
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Originally Posted by cantdrv65
Nice gains. The majority of your power came from the Fast 90 vs an Ls1 intake. About 10 probably from the EWP, and its hard to estimate how much a tune would give ya(depends if it was off before).
10-01-2006, 08:03 PM
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Originally Posted by 52172
your gas mileage should be better also with the electric water pump!! Congrats! Time for some trickflow heads now!
Last edited by gruntwork; 10-01-2006 at 08:10 PM.
10-01-2006, 08:23 PM
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Originally Posted by 52172
I didn't see that you have ported 241's. You probibly would pick up another 15-20 rwhp with just the head swap. Not sure though.
