leftme4dead

I have a question, I have around 313 rwtq and 304rwhp, if I get a 230/236 cam, approx how much hp and tq should I gain from that? Or can it vary a lot?

Q8CamaRo

iTrader: (4)

a4 or m6???

glennhl

If you get that much cam, you better go with some headers and a decent exhaust (or a cutout). I would say you'll be at 340 to 350 with just the cam, but with headers and a cutout along with the cam, you'll see around 380 to 400.

leftme4dead

Its an A4

PREDATOR-Z

First do your bolt ons.
Headers, intake, ported TB, 28.8 injectors, bellows, stall (3500 minimum)
Then move into cam territory.

Studytime

iTrader: (15)

I thought bellows showed zero on a chassis dyno?

Ben T.

SideStep

Who told you that??? I have heard 20rwhp...

Q8CamaRo

iTrader: (4)

i picked 330rwhp 370 rwtq with full bolt ons "broken ECT sensor :S"
with the TR 230/236 590/598
good luck
fahad

Q8CamaRo

iTrader: (4)

i almost forgot .. those numbers was when the car was with a4 tranny
with small stall ,,, so i`m sorry

leftme4dead

Since im kinda new this, what are bellows?

2001 White Ws6

iTrader: (1)

It's the piece between your MAF and throttle body. Not much of a gain. ~5rwhp maybe.

2001 White Ws6

iTrader: (1)

Long tubes will net you around 20rwhp and 20rwtq. Then adding the cam i'd expect around a 40-50rwhp from the cam. 360rwhp is my guess. You would probably want a stall to match with the cam to get even better performance out of the mods. 3500-4000 stall would match well with that cam.

Studytime

iTrader: (15)

The head guy at our local shop (VERY well known shop) says that in real world chassis tests the "smooth bellow" mod is only an apperance mod, and if you ask me, a real pain to get on and off.

If anyone wants smooth bellows, send me your factory one, and I'll send you mine. I'm tired of having to wrestle with it to get the intake ducting on/off.

Ben T.

supersix

iTrader: (12)

PM sent about your bellow

Studytime

iTrader: (15)

This is how serious I am about the bellows. PM returned. I'd be content with STOCK bellows as opposed to my aftermarket, smooth bellows.

Ben T.

nokeman

iTrader: (30)

i dont know about all that but it is a huge pain in the *** to get it off.

PREDATOR-Z

I have FIPK that came with bellows (before & after MAF).
They straighten the airflow in out without turbulance.
Now you can go to Home depot and get some tubing for $5 a foot. If that is not worth 5hp, I don't know what is.

Studytime

iTrader: (15)

What I'm saying is you get no stinkin' 5 hp. Do you have a dyno test that proves this? Show us all.

Smooth bellows are an apperance modificiation. I do like how the suspected "5" works out to such a nice round number, but if you dyno a car with a smooth bellow, and then go to a to the factory one HP is not going to decrease 5 units.

The theory is that laminar flow through a smooth bellow promotes more flow into the TB as the relative surface roughness decreases with "ribs" gone. In both cases the flow never becomes laminar- they're both turbulent, and not all theory is practical. Apparently on a dyno (the best way to measure this) removing the "ribs" by installing a 4" home depot piece of rubber niether increases the effective cross-sectional area nor does it significantly decrease the pressure differential across the bellow by having a smaller e/D ratio.

BUT all sorts of people buy them up. It makes me happy to walk by 3 ten second cars and see them all have the factory bellows still installed.

I'd rather spend that money on my next oil change than make some other cat rich.

Ben T.