best 4" downpipe
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Junior User
Joined: Oct 2002
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From: cary usa
best 4" downpipe
Hi Guys,
OK, I'm finally going for it! My 99 PSD has 65K miles on it and I figure it is finally broken in enough to do some tweaking on it. I'm installing the Superchips Microtuner, K&N filter kit, and a 4" downpipe. The only thing left is to decide on is what brand of downpipe. I thought you guys would be the ones to ask. What I'm really looking for is improved fuel economy while still keeping the thing as close to stock as possible, for longevity. I get 16.5 MPG now 7500lb GVW DRW. So what's the best downpipe for my application? Thanks guys.
OK, I'm finally going for it! My 99 PSD has 65K miles on it and I figure it is finally broken in enough to do some tweaking on it. I'm installing the Superchips Microtuner, K&N filter kit, and a 4" downpipe. The only thing left is to decide on is what brand of downpipe. I thought you guys would be the ones to ask. What I'm really looking for is improved fuel economy while still keeping the thing as close to stock as possible, for longevity. I get 16.5 MPG now 7500lb GVW DRW. So what's the best downpipe for my application? Thanks guys.
