Just wondering what size ic piping everyone was running either to stock turbo or upgrade.

 

Im running 2 inch from the turbo to my front mount intercooler, and 2.25 from intercooler to intake, if im not mistaken the bigger the pipe the more pressure drop you have, but most people run, 2.25 to 2.5, thats my two cents

 

really so 3 inch piping would be bad? i would think it would just flow more air.

 

No, the bigger the pipe diameter then LESS pressure drop.

 

If you have a stock turbo 3" would be really bad for the pressure drop thang.... If you have a stock turbo and plan on going to a real T04 someday then do 2.5", but if you plan on sticking with the stocker then go 2"

Also, if you have the stock ecu, then stick your AFM after the IC on the way back to the TB, this will allow you to run a FM-air filter of some sort, and your car will be much more responsive... I did this before getting a stand alone unit and it works great

Keep in mind an AFM is 2" on oneside and 3" on the other, so you could run 2" tubing on oneside then after the AFM run the 3".....then if your smart get a N/A 3.5" TB elbow, turn it upside down....It bolts right up to a Turbo Manifold... This way you won't have that lame *** stock turbo elbow that faces the firewall....

 

I'm kind of ignorant about this kind of stuff, so forgive me if this is a stupid question. If you were to do this, would it better to come off the IC with a 3" pipe and then reduce right before the AFM, or would it be better to just do a 2" pipe out of the IC? This would be with a T04 and a 3" inlet on the IC.

Dan

 

What size of inlet is coming off the IC?

 

Oops. I meant 2.5" inlet.

Dan

 

Ohhh ****! okay, ya you could run a 2" out of the IC then AFM-it, then 3" to the TB elbow, etc...That not that far to go w/ 3" tubing...

In my experience the shortest distance with no bends will be a cure-all to most pressure drops/lag time.

I have photos of mine if you need them ( my e-mail) bkapold@aol.com
Its alot like what Alf/Soul7 had....and no I didn't copy him

BTW: I don't have the stock ecu/AFM setup anymore since buying a stand alone unit, but I did run it and it works pretty good...

 

Thanks. I just wasn't sure which way would be the best way to do the pipes between the IC outlet and the AFM.

Dan

 

Does it matter which years N/A TB elbow to get? As in S4 or S5? I'm going to do custom IC piping as well and the elbow was the only problem I was gonna have!

 

i have a T04. ya im wondering about the years too. Any pics of this done?

 

I think any year will work on the N/A TB thing...Mine was off an 87 SE I think

If you need photos of the elbow and IC shoot me an e-mail

bkapold@aol.com

 

i emailed you

 

OK I didn't read every thing but I beleive that the bigger the piping is the more turbo lag you will have. Since yo are probably running a stock turbo, unless you have a turbo that can boost enough for that size piping it will just give you lag.