jhshnh

I have a 2000 Z28 that I'm thinking of giving boost. Is the 102 going to make a difference over the 92 in boost applications?

SCott5

iTrader: (40)

Use a stock or aluminum style intake. FAST intakes don't hold the pressures that well without cracking.

jhshnh

Never thought of that. What intake is recommended?

SCott5

iTrader: (40)

Depends on your setup, how much space you have, what your goals are and so forth

CWIZZLE

iTrader: (3)

Unless you already have a FAST intake, just pick up an ls6

jhshnh

I'm just trying to run low 10s in my Z28. I don't want to cut on the cowl.

JustAFooL

iTrader: (45)

10's? Sell your fast, buy a stock ls1. The Fast will bust without doubt, not enough differences to be seen between the ls1 and ls6 intakes on a boosted application. Your budget will thank us. .

redbird555

iTrader: (14)

A fast will make quite a difference in boosted applications. The 102 is a MUCH sturdier design than the 92 and was designed with boost in mind. How much boost are you going to make? 99% chance it will be fine for a 102. i wouldnt put boost through a 992 though

oscs

iTrader: (19)

Proof that FAST designed the 102 with FI in mind?

DavidBoren

I would like to see some evidence to support that claim, as well.

And unless it's strictly a budget thing, why would anyone advise against the plastic fast intake for boost, and then say to use a plastic factory intake? Why would the fast bust without a doubt, and a stock ls1 intake not be equally probable to bust?

If you're that worried about it breaking, buy an aluminum intake. Holley makes one very similar to the ls1/2/6 intake just cast aluminum. Speedmaster/eBay sells a 92mm cast aluminum intake for half the price of the Holley.

Or you can buy the fast 102 and win.

SCott5

iTrader: (40)

Fast intakes are two pieces and are very documented to busting under boost. Stock intakes are one piece and thus why they hold better. Ls1 intake has been 7s at 170. Last fast intake in a boosted I seen went high 9s.. Seems the stock intake ftw

willizm

iTrader: (10)

**** man I'm knocking on 8's with the ls6 intake that came with my car. I'd say even if you had the 90/102, just sell it and buy an ls6 or ls1 intake and use the extra money toward any number of other components that will give you more bang for the buck

redbird555

iTrader: (14)

Article done back in 2012 with the truck version but same basic design components.
http://www.performancetrucks.net/for...-boost-476404/

Another article by engine labs stating fast certified it to 30 psi and many guys are running 20.
http://www.enginelabs.com/engine-tec...ake-manifolds/

Here's another article with one on a boosted car.
http://www.superchevy.com/how-to/eng...take-manifold/

A quick google search will yield more results. I hope all of you have held a 102 and 92 side by side...The fast 102 is an entirely different design with o-ringed individual runners and a base which is almost 1/2" thick. The old 90/92's are not good for boost but thats not the case with a 102.

Can you show me where a 102 has busted under boost? The 92 and 102 share nothing in common. And wow thats nuts how did you manage to find 2 of the EXACT same setup cars, with the exact same weight ran at the exact same track in the same weather? Thats crazy...

I bought my old 102 used and the car it was pulled off of was pushing 30psi with twin turbos....


BTW i'm not advocating a fast will provide more hp than a stock intake. that entirely depends on the type of boost, where it comes in at, the demands of the engine, if you run a smaller pulley afterwards to make up for the "lost" boost from the larrger intake etc. I'm merely pointing out the addage a fast 102 is not good for boost is wrong

DavidBoren

We should start a new thread, maybe even a sticky, about first hand experience with boost breaking a fast 102 intake... I bet it would have maybe two posts.

There are WAY more success stories than failures with running a fast 102 with boost. And the pre-boost naturally aspirated breathing benefits of the fast intake are undeniable. The more power your engine makes before the boost kicks in, the more power it will make after the boost kicks in. Pretty simple, really.

redbird555

iTrader: (14)

Ehh that depends on how you look at it. The reason a lot dont report gains with a fast on a boosted setup is because it "loses" boost. When you add a mod like a fast, bigger headers or anything that drastically improves breathing you will lower the boost the engine sees. A big set of headers may lose 2-3 psi yet the car still makes the same hp. Is the blower making less boost? No, boost is a measureof restriction so by removing the restriction you help it flow better. Now since you have lowered boost you can now pulley down to make the same psi you did before and then you will see the big gains.

lsx1

I run low 5's in the 1/8th on a 102 and it is holding up just fine

2000GTP

iTrader: (3)

I have read alot of mixed stories where the Fast intakes have held up to boost, while some have not. I have a brand new Fast 92, one of the newer versions. I understand the older Fast 90/92s had problems, I haven't seen anything on the newer ones. Just wondering if I need to sell this thing before it goes on my build to save myself future trouble.

redbird555

iTrader: (14)

the new 92's are the same as the old just a different color the new 102 is a different design thats built better

DavidBoren

Ok. How about the more efficient an engine is before the boost kicks in, the more efficiently it will use the boost when it kicks in?

You can add better flowing heads and the boost will drop, but the power still goes up. Same with the higher flowing intake. Who cares if the boost number is lower as long as the power number is higher? If losing boost is that big of a deal to someone, they can always crank it right back up to where it was before adding a higher flowing intake/heads and make even more power. It's a win/win situation for the fast 102, either way.

jhshnh

For my purposes, I'm looking at a procharger setup. I have my stock ls1 intake, but I can't help but think there's better options.