with the stock pipes, your engine and turbo creates a bottleneck affect on your exhaust, not letting enough air out fast enough, so with a downpipe, it helps free up the space going from a 2.5" pipe to a 3" pipe so more space for more air to escape quicker, as for the full turboback, well, the downpipe is half of a full turboback, and the catback is the other half, reading enough threads and articles, i found that most of the performance gains are from the downpipe, and since i don't want my exhaust to be heard from a hundred of yards away, i chose just to upgrade the downpipe and leave my stock catback in.

 

Only a hundred yards....psshhhhhaaawww...

 

Here read this from the Milltek FAQ pages: Hiflow Sports Cats

 

Nam,

Thanks great explanation And thanks for the link Quadric. You guys are all bad influences!

 

maybe you should test it out, i'm thinking 200 yards for the GReddy catback

 

hey nam,

If you think your boost guage is off let me know. Did you guys compare it to a vag com?

I used yuppie's vag and it matched the boost guage pretty well. Anyways, I believe AWE has a life time warranty on the guage so we can always send it out.

 

yeah, the needle is still pointing 3 below 0 when the engine is off, they haven't vagcomed it,

one wierd thing today, i was on 5th gear at roughly 80mph trying to pass a car can i felt a wierd very slightjerk as if i was either losing traction or loss of boost, i'll try to test it out on the freeway again, but felt as if i lost boost for a few miliseconds, anyone know why that is?

 

That is Chef blowing by you on the highway because you hesitated![:-]

Better get that problem fixed!

Cheers!

 

i don't even know what the hell that problem is to fix it in the first place, i'll talk to the guys at group 5, i told Mike at PureMS about it, he didn't know what the problem is either

 

Fuel cut!!!

Welcome to stage II [:'(]