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best exhaust system for a n/a diesel with performance pump
Posted: Sat Mar 05, 2011 4:00 pm
by im_n2_vws
We just put a Giles performance pump on my dads n/a jetta. We would like to remove the stock exhaust. I have a 2.5" custom built exhaust with no catalytic converter and a Magnaflow muffler on my 1.8 Jetta gasser. He thinks mine is too loud. Any suggestions on what size (2" 2.25" or 2.5") to put on and what muffler would give him less back pressure and low noise. Thanks,
Danny
Re: best exhaust system for a n/a diesel with performance pu
Posted: Thu Sep 08, 2011 7:06 am
by the man 53
I did 2.25 on an N/A once with 2 cherry bombs. It was actually quiet and TONS better performance than the stock setup.
Re: best exhaust system for a n/a diesel with performance pu
Posted: Thu Sep 08, 2011 6:53 pm
by caveman
Start with a dual outlet exhaust manifold [I have one for sale !] then 2" pipe all the way. Using good quality, thick pipe will help to cut down resonance. Them an oem quality GLI muffler