UPDATED with new numbers. AI heads, EPS 226/234 and bolt ons - Speed Inc Tuned
06-27-2011, 09:48 AM
#24
Great to see the car come together well!
We've said it for years, and I realize it is largely fruitless, but here goes again: Flow numbers are marketing data precisely because they are neither comparable, nor are they an indicator of potential performance. For the consumer it is entirely fruitless to buy flow #'s.
http://www.advancedinduction.com/LSX...cGMLS2Head.php
Thanks for the kind words, guys!
Man those AI heads work! Same EPS cam as Brennen01SS but 24hp and 40tq over the PRC 2.5 LS6 heads. I guess a little could be attributed to the FAST being ported and the heavier wheels, but damn that torque is way stronger. That's pretty close to apples to apples as far as set ups. Amazing considering the advertised flow between the two is so close,and even a little in favor of the PRC's. I might have to consider selling my PRC's and going with the AI's !!!
Thanks for the kind words, guys!
06-27-2011, 02:11 PM
#25
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[QUOTE=Advanced Induction;15088084]Great to see the car come together well!
We've said it for years, and I realize it is largely fruitless, but here goes again: Flow numbers are marketing data precisely because they are neither comparable, nor are they an indicator of potential performance. For the consumer it is entirely fruitless to buy flow #'s.
I get that, my comparison was more to point that out that fact. With regards to two heads that are so close in Runner size, and Chamber size that one could
produce so much more torque than the other even though the advertised flow numbers are close, even in favor of the weaker performing head. After looking at the total picture there are some areas that explain the difference,
1) LPP headers (merge collector) > BBK headers
2) Ported FAST > Non ported FAST
3) 100mm MAF > 85mm MAF
4) 3" Y-pipe w/merge and cutout > 2.5" Y-pipe no cutout
5) heads milled to 58cc > 60-61cc
6) Stock > Heavier 19" wheel
How much of a difference would all those things make, I don't know but I think it could easily make up the HP difference, the TQ difference is another story. I'd say all together maybe 20-30 rwtq but we won't know till Brennen01SS changes his exhaust and we see how much was locked up there. LPP headers have a nice merge collector that probably effect TQ more than HP over BBK , those combined with a 3" Y-pipe will have an advantage over the 2.5" Y that is definitely choking flow. We already know porting a FAST is good for 10rwhp+, 100mm MAF is good for 5-10hp, so that leaves the heavy wheels and your guess is as good as mine but I'm sure
they cost a good deal of HP/TQ.
Subscribed for sure!
We've said it for years, and I realize it is largely fruitless, but here goes again: Flow numbers are marketing data precisely because they are neither comparable, nor are they an indicator of potential performance. For the consumer it is entirely fruitless to buy flow #'s.
I get that, my comparison was more to point that out that fact. With regards to two heads that are so close in Runner size, and Chamber size that one could
produce so much more torque than the other even though the advertised flow numbers are close, even in favor of the weaker performing head. After looking at the total picture there are some areas that explain the difference,
1) LPP headers (merge collector) > BBK headers
2) Ported FAST > Non ported FAST
3) 100mm MAF > 85mm MAF
4) 3" Y-pipe w/merge and cutout > 2.5" Y-pipe no cutout
5) heads milled to 58cc > 60-61cc
6) Stock > Heavier 19" wheel
How much of a difference would all those things make, I don't know but I think it could easily make up the HP difference, the TQ difference is another story. I'd say all together maybe 20-30 rwtq but we won't know till Brennen01SS changes his exhaust and we see how much was locked up there. LPP headers have a nice merge collector that probably effect TQ more than HP over BBK , those combined with a 3" Y-pipe will have an advantage over the 2.5" Y that is definitely choking flow. We already know porting a FAST is good for 10rwhp+, 100mm MAF is good for 5-10hp, so that leaves the heavy wheels and your guess is as good as mine but I'm sure
they cost a good deal of HP/TQ.
Subscribed for sure!
Last edited by hardcore4sure; 06-27-2011 at 02:35 PM.
06-28-2011, 12:04 AM
#28
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Anyway congratulations those are badass numbers can't wait to see some track times !
Last edited by hardcore4sure; 06-28-2011 at 12:15 AM.
07-09-2011, 04:02 AM
#35
I do plan to go but the car is on street tires so I dont really expect a great 60ft. I will be sure to post my time slips. What type of numbers do you guys think are possible with thise type of power in a full weight Trans Am on street tires, with a descent but not great driver.
08-15-2011, 05:26 PM
#38
So I wasn't totally happy with the TSP 100MM MAF. I know that there are lots of people that are happy and have good results with them, but for whatever reason my car didn't like it. Kept throwing the SES code, car kept dying out, etc.
So I decided to bring the car back to Speed Inc and have them redyno tune the car using Speed Density and ditch the MAF. I didn't think it would pick up any power, as I can't see a 100MM pipe with a little LS7 cartridge sensor being a restriction..but it did. Picked up 9.75 rwhp and 7.61 ftlbs of torque. This is with a heavy LS7 clutch.
Thanks Speed Inc!
So I decided to bring the car back to Speed Inc and have them redyno tune the car using Speed Density and ditch the MAF. I didn't think it would pick up any power, as I can't see a 100MM pipe with a little LS7 cartridge sensor being a restriction..but it did. Picked up 9.75 rwhp and 7.61 ftlbs of torque. This is with a heavy LS7 clutch.
Thanks Speed Inc!
Last edited by Jimmy P; 08-15-2011 at 05:32 PM.
08-15-2011, 06:04 PM
#39
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Damn that's freaking incredible? A.I heads and EPS cams are no ******' joke, like match made in heaven. That's stroker power from a lil cam and "inferior" heads. Good job brudda , I'm hoping my EPS 226 and PRC 2.5's can get even close to that.
