Has anyone ran into the front coolant crossover hitting on the front of the intake manifold? We can't get the manifold to sit down properly, and we don't know what to do? And what does everyone do for the map sensor, it fits so loose, do you just use a lot of RTV to seal it up?

Need help

 

They were supose to fix the MAP sensor hole size with the revision on the 92. I guess they did not do it right. I would use the RTV to seal it up.

As far as the coolant cross over. You can bend it down slightly so it does fit. At least you can for the 90. Not sure how much it needs to move for the 92.

 

I was really hoping they fixed that pos MAP sensor mounting problem!! Just use RTV like stated above... its what most do.

As for the coolant line, it bends easy, just move it out of the way.

If the intake isnt sitting properly, check the wires in the back... mainly the knock sensor wires. If you have the clips on there still that held the wires to the old coolant line, they need to come off or the intake wont sit properly. Also sometimes wires sit in the wrong place (IE injector plugs, coil power pulgs, etc)

Have fun!

 

I drilled and tapped my FAST for a hosebarb, and remote mounted the MAP.

 

That was my brother who posted that, i am the one with the intake. I got everything on and the car runs pretty good. But it idles really high at first (higher than normal) than falls to normal idle, in park. When i put the car in drive the Rpms like shoot up then come down. I am thinking that the map sensor isn't sealed possible? I know everything else is hooked up. I am thinking that i just might drill and tap the map hole for a barbed hose fitting and move the map. As for the tb, it looks super nice, and as of now its not sticking, but it definetely made the gas pedal harder to push down.

 

bend them down a bit

 

Oh man...i've posted up in other threads about the Fast intake. I've said things
like its not worth the money for the intake and the TB that goes with it. I personally
believe the bigger opening ( 90mm or the 92mm ) is mainly responsible for it gains. Even guys with large head/cam setups claim they got 20rwhp. If we were able to open our LS6 intake to 90mm we would see the same gains as the over priced intake. Plus some people had issues with it leaking under boost and the mounting hardware showed signs of rust. Thats ridiculous for a $800 to $1000 intake and over $400 more for the TB? This is the biggest rip off for our cars. And to top it off you have to spend more money to have a professional port the POS. TPIS, Inc showed us that just by opening up the inlet to 90mm on our LS6 intake makes the same or more than a Fast intake makes.
And TPIS only charges $350 dollars!!! And they offer a couple styles of TB's. I'm surprised Compcams, who owns Fast, sells this sub-standard POS. For all the people that bought them only a few made any gains that makes it worth the money, but those people had to have it reworked by the top porters in the country. **** i rather take the money that the intake cost and spend it in other places that will show alot bigger gains.

 

Well i guess everyone had there own opinion, i like the way the intake looks in the engine bay, to me it makes look like a little more serious racecar than just a DD which it isn't. The throttle body is a very nice piece i have to say. The only thing that i have to complain about is the map sensor hole. If they were to put a a smaller hole their, and a clip to hold it in place it would be much nicer. As far as my gains go to me this was investment, i believe it will make a little more power now, but when i do heads i want to be able to see 450 whp and think that this intake will help me reach my goal.

 

I too hope that more cubes show better gains. But i'm amazed that people are
spending over $1,300 just cause it looks good? I'm not about to make CompCams
even more rich than they already are for a performance part that might or might
not show any gains. Through the years i've seen gimmicks like that velocity collar that
slides in the mouth of our TB. Tons of guys laughed at the thing cause the company
who sold it claimed a something like 10 hp or something like that. They bitched cause
it cost $40 or $50 and a lot of people said it was just a gimmick. Well from the average
gains i've seen with the Fast intake i can't believe that guys on this site are killing
themselves to save and buy this thing that is waaaaayyyyy overpriced for the gains
that it makes. Like i said a few post ago the TB and the opening is where most if not all the gains are coming from not the intake itself. Even Fast knows this thats why they opened up the inlet even more. no one can see this for themselves? I guess if i bought it and then read a post or many post where guys are seeing very little gains for the outragious cost they paid i would feel scammed and try to defend my choice for buying it. But there's not a ton of guys posting that they gained alot at the track or anything.
With the economy these days i'm not willing to drop that kind of cash on a intake that doesn't work for the price they charge. Sorry for being so blunt, but it's more than just my opinion, i'm just posting what people have wrote on here about their experience with the thing. I'm the kind of guy that ends up trying almost every catback or air lid that comes out for our cars..lol. I too like the way the intake looks, and i'm disappointed with it's performance.
But if i need or want an intake that shows solid gains i'd go with TPIS's
modified LS6 intake and use any companies 90mm TB and paint the thing to
make it look better and i would still have the $500 difference in my pocket
not in Fast ( CompCam ) CEO's pocket.

 

Who is TPIS?

 

Tuned Port Injection Systems, i believe is their name, they are actually in Mn where i am from, i believe they are a sponser on here, if not the mods can delete my post.

 

You think it's the opening and not the runner volume and shape?

 

I say the opening plays a huge part in conjunction with the runner volume and design. However, TPIS does sound like a good option for the LS6 intake. I can imagine that had more sponsor sites offered opening up the LS6 to a 90mm for half the price of a FAST 90/90, many people including myself im sure would opt for it. A 90mm LS6 intake? It sure sounds good doesnt it...

 

No, it sounds like a waste of time since 99% of people who know about intakes and the opening will tell you that it is the FAST runner volume and entire harmonics rather than just the intake opening.

 

we modified a LS6 intake with a 90mm inlet so that a 90mm LS2 TB fits right onto it. It is not worth the work and labour, the FAST does flow a lot more air.

For example, we had the tune with the FAST with 90mm LS2 TB right at 13.0 AFR @ 6800 rpm in 5th gear (m6 Vette) and car was responsive in upper rpm as hell, just put the LS6 with 90mm and LS2 TB inlet on and AFR dropped to 11.9 at same rpm and it felt lame!

that must clearly demonstrate how much more air the FAST can flow. Put the FAST back on, back at 13 AFR, all that with 427

 

I stand corrected. Keeps me from wasting my time with a 90mm LS6 then.

 

Than if it flows a lot more why isn't there more of a gain? I've seen the
TPIS make more than a Fast when both were used on the same car. Besides TPIS doesn't just add a 90mm TB they do other work inside the manifold itself.
And it cost a fraction of what a FAST manifold cost. And to get the best
out of the FAST it has to be ported. All that time and money for maybe 20rwhp??? Now that's a waste of time and money. On a final note i've seen and followed the developement of the FAST intake in 2003 when it appeared at the SEMA show. I was one of the only one that was defending it until shops started testing it and only see little to no gains. I think Thunder Racing was one of the only shops to get 12rwhp out of it. And people were pissed when they bought one and didn't like it. I was so disappointed myself cause i loved the way it looked. And guys have made serious power on LS6 manifolds with larger TB's. I've seen a few guys on here switching back to the LS6 intake. Even if it cost only $300 bucks i wouldn't buy it if i only gained 10rwhp on a 346cid with smaller heads/cam. With most of us running street cars why is there a need to raise the size up to 92mm?
I think FAST is throwing anything at it to make the power to justify the cost.

 

Hey, if i can gain 15-20 whp, then i really don't care because that could make a difference in a race to be honest, now if i didn't gain absolutely nothing than there would be a problem. When it comes time to make a car fast it comes down to what you want to do with the car and how much money you want to spend to get to your goal. I can tell you that runners on the FAST were much bigger than the Ls6 that i had took off. I started with a ls1 intake, upgraded to the ls6 and it was time to upgrade to the FAST and, i sold my ls6 for $300 locally. When the weiand comes out the price of ls6's are going to drop, and i wanted to get a good price out of my ls6, knowing i wanted a FAST eventually.

 

I buy parts that increase my performance, not just because its the next
intake to come down the line. But to answer to a post that the intake makes
its power increase with the longer internal runners not just the opening.
Well the 78mm FAST didn't make any difference over a LS6 intake. And the
78mm and 90mm have the same dimensions except the for the openings.
So if the intake was better than the LS6 shouldn't it make more power over the
75mm LS6 intake. Only the 90mm intake makes the small gain. Showing it's
the 90mm opening is the creating the gains. Now in the future i want to have
a 427cid made for my SS and at that point i'll try the 92mm FAST intake, and
i'm hoping it makes a good difference over a stock intake. I but i might go with
a NW TB. But i do wish good luck to everyone that bought the FAST. I'd just
would like to see some guys post their gains at the track, cause the dyno doesn't
tell the whole story. P.S. I could just replace the cam with a few more degrees of duration and gain 15rwhp, and a cam cost less than $400.

 

Since when does a FAST 78 not do any more than a LS6?

You buy based upon performance? Good. Here's a performance FACT for you:
On my tuner's dyno (very stingy dyno), there is a line between cars with a FAST and those without. Definite line. Those stock cubes with an LS6 don't break 430. Period. It just doesn't happen. Those that have done over 430rwhp have had a FAST. Pretty definite. Case closed. What's next? Headers don't help?

As for the cam swap, sure you could. And you'd lose ***** down low. Add the FAST and you don't lose it down low. No trade off there.

What's your agenda? Because you aren't helping TPIS one bit with this talk. If they want business, they need to drop the price of their LS6 intakes and TBs and get some out there.