fast 90
Thread Starter
Launching!
Joined: Jan 2006
Posts: 238
Likes: 0
From: 909,So Cal
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?
Well, yes good for FI. You are afterall moving more air. 
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.
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.
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.
On The Tree
Joined: Mar 2006
Posts: 105
Likes: 0
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.
Trending Topics
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.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
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.
TECH Fanatic
Joined: Aug 2005
Posts: 1,691
Likes: 1
From: Sunny London, UK
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.
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.
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.
On The Tree
Joined: Jan 2007
Posts: 112
Likes: 0
From: United States
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.
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.
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.
Originally Posted by john563
Well i have a ported fast and it di 20rwhp over my ls6 and i dont have big cubes just heads and small cam