Exhausts

**Timbo** · 12-07-2008, 11:08 AM

We have been through this -- many, many times. Search is your friend.

**GT3** · 12-07-2008, 12:06 PM

Tim - yours is a custom 3" dp and you're running 19 psi boost, ..think you should avoid generalising about how the mod works on all Polo GTIs.

...

**Timbo** · 12-07-2008, 02:45 PM

Actually, it peaks at 18psi, and averages 16psi through the powerband, FWIW

But that wasn't the point of my post at all.

My point is that we have posts revisiting issues. There's a very hand FAQ and DIY that PoloGTI spent quite a bit of time putting together, which centralises most of the information being sought, and to which new owners should be encouraged to refer.

**hkogti** · 13-07-2008, 10:26 PM

Anyone knows whats the diameter of the standard exhaust?

As most of your guys think that the stock exhaust is pretty free flowing, do you guys thinks its ok to leave themiddle pipe stock and change the rear box for sound and dump pipe for power? Or it will yield significant power with the replacement mid pipe?

**Blitzen** · 13-07-2008, 10:38 PM

Originally Posted by hkogti

Anyone knows whats the diameter of the standard exhaust?

As most of your guys think that the stock exhaust is pretty free flowing, do you guys thinks its ok to leave themiddle pipe stock and change the rear box for sound and dump pipe for power? Or it will yield significant power with the replacement mid pipe?

The stock diameter is 2 1/4 inches. The middle assembly on mine(07 model) is the Catalytic Converter, then its free flowing to the fear muffler and twin pipes...I have no middle muffler, but I think early model Polo GTI's do(Don't hold me to that!!).