FAST intake manifold is garbage!

[danhr]

Originally Posted by motorhead

That's why I dropped on a supercharger. That's the cheapest HP mod you can do looking at cost per hp ,and you know it works. To me the other stuff is just a waist of money unless you open up the motor which is very spendy.

this man speaks lies. don't listen young ones.

[axis]

Originally Posted by WheelmanSS

Did he elaborate on why the Halltech is "worse"? I have a hard time believing that. For a bolt-on, no-tune required intake kit, I have to say that have done the most research of any company making this type of product.

This is also the same tuner that recommended his FAST intake. That should tell you something.

[thedak]

Originally Posted by SK360

Another thread crying about dyno numbers.

Dyno numbers are for internet racers.

Go to the track and see the gains.

/thread.

GTFO

I heard if you blend the bowl and tunnel of the FAST you get mad upper torque.

[danhr]

Originally Posted by thedak

GTFO

I heard if you blend the bowl and tunnel of the FAST you get mad upper torque.

how much did that mad upper torque knock off your ET?

[thedak]

Originally Posted by danhr

how much did that mad upper torque knock off your ET?

You even break into the 12s yet ?

I am assuming no with that cam selection you have there. Especially with your CNCd L92s.

Split - ICL not even close - LSA to tight -Durations - The list goes on and on...

I am going to guess 470 peak rw with a horrible looking graph.

[VRMMMM]

my car is putting out 142 rwhp . . fear me!

[danhr]

Originally Posted by thedak

You even break into the 12s yet ?

I am assuming no with that cam selection you have there. Especially with your CNCd L92s.

Split - ICL not even close - LSA to tight -Durations - The list goes on and on...

I am going to guess 470 peak rw with a horrible looking graph.

Actually yes. Deep into the 12's. A DA corrected 12.1 @ 118 with a 2.6 60'. Felt like messing around with street tires and still had torque management in the tune, so it was horrible to launch. Was just having fun at the track, wasn't trying to make any serious runs, but you asked.

What's your best ET? Or can you not find a dyno that will let you do a 1/4 run on the rollers yet?

And are you really going to knock my heads? I have WCCH's,..... don't you have PRC's? Honestly?

My cam has been done before... it has made 500 rwhp with your lovely PRC heads, with sunk valves, with greater ptv clearance, blah blah blah blah. You really think it's only going to make 470 rwhp? Care to wager your precious CCW's on it?

[Doc]

One of the biggest mistakes people who are new to modding make is to assume the claims of various manufacturers can stack up and add together in a linear fashion; as others have pointed out, they don't and can't. The manufacturers may be accurate if you add their particular piece under the same conditions they did without modifying anything else, but if you make changes elsewhere that changes everything.

Think of it like an assembly line with a beginning, middle and end. The intake, manifold and exhaust all process the air coming into the engine. If the guy at the beginning says "hey I can speed up the production line 10% by doing 'this' " he may be telling the truth as long as nothing else on the line is changed. If the guy in the middle makes the same claim, he's also telling the truth as long as nothing else has changed. And now the guy at the end is saying he can speed it up by 10% by doing whatever he claims will do it but again that assumes nothing else on the line has changed.

The mistake is to listen to all 3 and believe you can speed up the whole line by 30% if you do what all 3 of them are saying. The truth is the line itself can stand some improvements but can only speed up so far. If the guy in front speeds it up by 10% then the guy in the middle's idea now may only make a 2% difference because the conditions he was going to improve were improved by the guy at the front. Now his "improvement" is basically just keeping up with what the guy in front did. The guy at the end is now seeing the line moving faster than it was before so HIS idea is now mostly already absorbed and maybe it will make a 1 or 2% difference. Adding them all together has produced in reality about a 12-14% improvement which is still an improvement but certainly not 30%.

An intake, a manifold, an exhaust system are all designed to increase airflow. On a non-boosted engine only so much air is going to be able to go into the motor; move through it and be pushed/pulled out. Unless you're going to change the engine internals, it's best to not change the intake manifold. The CAI, headers and tune will give you better results if you put the stock manifold back on. The FAST manifold is designed for built-out engines; the stock engine doesn't know what to do with it basically.

The purpose of an intake manifold is to manage the flow of air so that when the intake valve opens there's plenty of air at good pressure levels to be pushed into the cylinder. It's all about velocity and pressure. If the air stalls out or loses velocity in the manifold, less will get pushed into the cylinder when the intake valve opens. It's a push/pull process; the vacuum in the cylinder pulls while the pressure in the manifold pushes.

I'm guessing the velocity of air into the FAST intake isn't high enough to maintain high pressure in the manifold because the engine itself isn't built to use the massive amounts of air the FAST can deliver. In essence the flow is stalling out in the manifold because it's just sitting there; the engine isn't pulling the volume of air necessary to make that manifold really work properly. Switch back to the stock manifold, it's designed for the flow rate and pressure the factory engine build needs. A CAI helps a little to improve the flow in, the headers help a little to pull the exhaust out but it's not enough to cause a stall-out/low pressure issue in the manifold so there is a genuine improvement in power. The FAST manifold is designed to accept an airflow amount that's not coming in, and move a velocity of air into the engine that's not being accepted on your build. Air loses it's velocity almost immediately so I'm guessing the FAST manifold in this particular setup you have is actually costing you power because it's not being used on the right build.

[boostedyards86]

dan vs dak war....this could be fun. TAKE IT TO THE TRACK. Maybe I will come and race too hehe

[danhr]

oh me, oh my, i dont know... he has more hp than me and about 300 lbs lighter. i think you would have to convince dak to actually take his car down the track first......

[boostedyards86]

really thats sad...

[thedak]

Originally Posted by danhr

And are you really going to knock my heads? I have WCCH's,..... don't you have PRC's? Honestly?

If you think 10cfm on the intake and 20cfm more on the exhaust side is worth $700 than more power to you.

Going strictly by what written on paper. I also have hollow valves and Comp 926 springs.

Add those items to a set of WCCH Stage 2 and you're over $2400.

I paid $1700 for mine complete with the above. PRC CNCd L92s are a nice piece for the money.

I don't buy items because of the name on them.

Why isn't you car tuned ? We just had a great tuner up in the area....

Oh wait...

Just trying to help you out but as everyone knows you seem to one of the odd ones.

We can discuss your cam and other mods at Sonic or Starlite.

I want to see how well drivability is with that tune you got in there...

Maybe I will have some drag radials mounted this season as well.

[danhr]

i paid 1250 for my wcch l92's brand new from rich. Add another 350 for my EHT valve springs, and that's still less than what you paid for, for your PRC's. And I get a double valve spring with more seat pressure. sooo 1600 total for my heads, minus the $400 i got back from selling my stockers.

I already have hollow stem valves... my car comes with them stock... just had to take them off my stock heads

i didn't get my car tuned b/c the guy was a douche bag, and it took a lot for me not to punch him in the face, let alone let him tune my car. he was a great tuner, no doubt. but his character said otherwise. you don't know the full story, so don't bring that up. all that needs to be said is that i didn't like the guy, he didn't tune my car.

and to say i'm one of the odd ones.....

well that's just a damn understatement if i ever heard one in my life.

[thedak]

Originally Posted by danhr

I already have hollow stem valves... my car comes with them stock... just had to take them off my stock heads

I didn't know Ferrea valves came stock on the Camaro.



You don't have to justify those heads to me. They are excellent pieces.

I havnt see a set of Stage 2s really out perform the PRCs.

The Stage 3 heads are a different story. They are titties but too expensive.