fast 90
02-11-2007, 04:33 AM
#1
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fast 90 so where does the fast 90/90 set up really shine. from what i can tell its not with FI cuz a ls6 and ported t.b do just as well. so who does really well with them? big cube N/As?
Also good for nitrous. Most people are afraid that they are going to blow the burst panel on the FAST with FI so they will get a sheetmetal intake or a Weiand/Holley.
02-11-2007, 09:30 PM
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Originally Posted by SoCal_T/A
so where does the fast 90/90 set up really shine. from what i can tell its not with FI cuz a ls6 and ported t.b do just as well. so who does really well with them? big cube N/As?
There is obviously better setups for serious applications...but for the middle of the road 400-500 hp...the Fast is the way to go.
02-11-2007, 10:52 PM
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From what I have read and been told from many professionals, the 90/90 is only a small amount better than an ls6 intake (approximately 8-12 cfm on intake or ~10hp) However, a ported ls6 will outflow/outperform the FAST slightly. Still, the FAST is a great intake for an ls1 and when ported, its probably the best on the market with the exception of sheetmetal.
*By the way, dont think i'm against the FAST intake, I'm a big fan.
*By the way, dont think i'm against the FAST intake, I'm a big fan.
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02-12-2007, 05:24 AM
#8
I'll tell you Thursday when I dyno. I had a LS6 intake and a stock Jantzer-ported throttle body with stock MAF. It's definitely a change because my car is a tad louder since my F.A.S.T. 90/90 setup went on ... that tells me it's allowing a lot more air ... once it's tuned, I hope to see about 10-15 RWHP, though, some people on here see 20-25 or more.
I added a 90mm MAF a few days later because it allows more CFM screened than the ported stock TB unscreened, which means the airflow with be smoother .... FWIW.
I added a 90mm MAF a few days later because it allows more CFM screened than the ported stock TB unscreened, which means the airflow with be smoother .... FWIW.
02-12-2007, 06:43 AM
#9
A ported FAST 90/90 will outperform an LS6/ported TB through the entire RPM range on a 346 motor. Check out Patrick G's plot for the Mamo ported FAST that he installed with a CheaTR cam, you will see exactly this. There are many other posts with the same results. Its not just for big cubes.
02-12-2007, 07:10 AM
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I recommend the Fast even with a mild combo. My airflow increased from 0.86g/cyl to 0.95g/cyl with no other change other than the Fast90/90 combo.
Thats like a 9% increase in airflow at peak torque. I expect a similar increase in power. ~30-40bhp.
Ill post up the gains as I did a before dyno with the LS6.
Thats like a 9% increase in airflow at peak torque. I expect a similar increase in power. ~30-40bhp.
Ill post up the gains as I did a before dyno with the LS6.
02-12-2007, 10:30 PM
#11
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Originally Posted by mxmatt137
From what I have read and been told from many professionals, the 90/90 is only a small amount better than an ls6 intake (approximately 8-12 cfm on intake or ~10hp) However, a ported ls6 will outflow/outperform the FAST slightly. Still, the FAST is a great intake for an ls1 and when ported, its probably the best on the market with the exception of sheetmetal.
*By the way, dont think i'm against the FAST intake, I'm a big fan.
*By the way, dont think i'm against the FAST intake, I'm a big fan.
02-13-2007, 07:35 AM
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The fast is great for big cubes, large H/C packages, and N2O or a combination of them. It will work on some FI setups but isn't reliable on high boost applications. I know of a few that have come aprt during boost. LS6, LS2, Carb, or sheetmetal intakes are better for boost.
02-13-2007, 07:42 AM
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As someone who works on these types of cars EVERYDAY, I would say the LS6 is the best UNTIL you hit about 500hp. The gains you receive under 450HP are not sufficient enough to ration spending $600 more on an intake. But Mike is absolutely correct. When you start throwing 500+ HP to the car then you need the extra air flow. Don't be mistaken and buy the 78mm TB and Intake b/c only a fool wanting to throw his money down the drain would waste money like that. Only way to go with the FAST would be 90/90 and heck the Nick Williams 90mm TB is actually prob. a better combo than the FAST 90/90 setup. Just IMO, hope this helps a little.
02-13-2007, 12:30 PM
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I think the point is.......the Fast WILL outperform a LS6 intake and ported throttle body on any car past a bolt on car. A cam only, H/C, big cube, nitrous, cam nitrous...etc...............the Fast is a proven better performer.
Now...is it worth the money? Well that is up to the individual. Depends on how bad he wants that extra 15-25 extra hp. But the Fast is without a doubt a better performer...hands down.
Now...is it worth the money? Well that is up to the individual. Depends on how bad he wants that extra 15-25 extra hp. But the Fast is without a doubt a better performer...hands down.
02-13-2007, 05:08 PM
#17
Well ... getting anxious to prove that mike#9. Thursday morning will tell the tale ... new FAST 90/90 with a brand new SLP 90mm MAF ... new MTI clear lid to go with it. I'll put up the dyno's Thursday and I have a really good feeling about it ... keepin' the MAF screened for smoother airflow. Mike Norris is my tuner and he'll tune 'er to safe numbers. No jack-legging the dynojet or tricking the PCM ... just straight-up Mike Norris tuning ... as compared to my last dyno session with Mike. 15+ RWHP and 3+ RWTQ and I'm happy, but, I think 20-25 HP and 10+ TQ is very likely on a conservative/safe tune.
