For all your hard to find car part needs!

**Andrew_99GTP** · 05-08-2008

Originally Posted by TCO

I got the one for the dual. I don't know how big of a mileage increase you will see but you will really feel it with the power. My buddy has a 1999 GP and he has just the single O pipe and when he gets on it you can really tell. I would say you will only see about 1 MPG difference. Every car is different though.

Dang maybe I will have to reconsider getting one for the GS and get one for the trubo gp. Maybe it will increase exhaust gas velocity if I put it before the turbo?

**TCO** · 05-09-2008

Originally Posted by Andrew_99GTP

Dang maybe I will have to reconsider getting one for the GS and get one for the trubo gp. Maybe it will increase exhaust gas velocity if I put it before the turbo?

I really don't know alot about turbos so I cannot help you there. I would check your muffler bearings. Most likely they are getting wore out which would hurt your mileage a bit. Throw some new bearings and an O pipe on there and you should see a 3-4 MPG difference. If you have bad bearings it really slows down your exhaust flow and just kills mileage. These 2 things will only cost you $150 and will make a big difference.

**GR8racingfool** · 05-09-2008

Awesome, I used to have this bookmarked years ago.

You know, reading through everything...it seems to reflect a certain vendors web site with "claims or power advantages by running this part". You know...all that extensive testing and what not proves it to be worth it.

~F~

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