Okay I think this is a Must Read for everyone! Make sure to click next page at the bottom.

How Turbochargers Work

 

WASTEGATE!!!!THe wastegate is what controls boost, the downpipe is just part of the exhuast,

 

Well smartass I was just wondering about this as I have read in articles that say the oppposite of what has been sasid here and I was just doing some researchso as to get things right when I do the exhaust on my next car. As I said in my postsI wasnt sure but was getting conflicting news and was trying to see if itapplied to our cars. And I think it is like the article said you have to get a good combination between the two thats right for your car. But thanks for the input from the rest of youwhoposted like adults.

 

Ok then, next time ill let people give COMPLETLY wrong advise to everyone and just sit here and laugh since im such a smartass.

 

Well I cant say I was giving adcive cuz I was asking questions about this and just posting the article that I read about the whole thing. Im not one of those people that think they know everything and post like I do. I read, do some research and ask questions and make up my mind from there. So where you might know some things I doubt that the people who write these articles are ignorant as this is what they do for a living and are working for major companies. From what I have been able to find out a bigger exhaust might not kill your turbo, it looks like it could hurt the over all life of the turbo. And Im sure there is a point where a bigger exhaust on a small could actually take away from the performance and that is where you need to find the right compromise as too size. Plus why pay extra for a bigger exhaust if its not needed. Now you might need one cuz you plan to upgrade to a bigger turbo, cool, but I was trying to find out the right size for a smaller turbo. Beleive it or not I listen to what everyone in here says and I do research on it, so Cincy I do take what you have to say into consideration as you might have come across some things that others might not have. So thanks all.

 

I mean, cant we just use a downpipe from the same motor in the VW? There are a few aftermarket pipes for those, what keeps them from working on my FWD tt?

 

By advice from GIAC the guy that did my chip I bought a downpipe that was for a VW (cant remember which VW) and it fit perfectly and was cheaper than most. I think I paid $295 for it with a highflow cat on it.

 

All fwd cars use the same downpipe, hit up ebay and get one for about $100. If you need acat, get one from 42dd or get your stock one open to 2.5 or 3".

 

The best exhaust for a turbo car is no exhuast. This doesnt mean a 4" will give more power than a 3". You just need to make it large enough to remove the restricion of the exhaust flow. A 3" will be more than enough than what just about everyone on this forum will need. 2.5" will be good enough for stock turbos but a 3" is always better if you want to go bigger in the long run.

 

So after reading all this, I'm thinkin of getting the 42 draft design for my 225 and the borla cat-back. Does this sound good?