exhaust mpg gain???
#1
11-01-2011, 11:48 PM
Join Date: Jul 2011
Location: Missouri
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#3
11-02-2011, 12:02 AM
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#4
11-02-2011, 12:44 AM
I replaced my muffler for a high-flow and gained 1mpg and noticed quite a bit more holding power on the hills. Plus the pre 98 models are seriously more resticted at the y pipe than the later models. For that reason you may get more efficiency improvement than I did in my 01 especially if you're doing the entire exhaust. I bought a new Y pipe and high flow cat to compliment the muffler, just waiting till I have time to install it. Definitely cut out your factory Y
Last edited by beeker; 11-02-2011 at 12:47 AM.
#5
11-02-2011, 10:06 AM
Yep, the y is THE biggest restriction on these trucks. (probably closely followed by the mondo stock muffler.....)
Headers and a y- with 3" single exhaust, or, Headers and 2.5" true duals is as large as I would go. You aren't building a 10,000 rpm screamer, you want the smaller pipe diameter to aid in scavenging, and keep flow velocity up. Too large of pipe for the application and your bottom end starts disappearing.
Headers and a y- with 3" single exhaust, or, Headers and 2.5" true duals is as large as I would go. You aren't building a 10,000 rpm screamer, you want the smaller pipe diameter to aid in scavenging, and keep flow velocity up. Too large of pipe for the application and your bottom end starts disappearing.
#6
11-02-2011, 10:51 AM
Champion
#7
11-02-2011, 11:24 AM
Record Breaker