Took this idle clip on my exhaust while I was waiting on the Seafoam to burn off. The Exhaust setup is as follows: 18" Magnaflow Oval body muffler 3" SI/ 2.5" DO with dual, double walled tips made by Magnaflow as well. The engine is a Ford 4.2L V6 with a K&N '77 series intake and a Xcal 3 with custom tunes from VMP Tuning.
Any other info needed, just ask.
@csisterh on the 87 tune, not so much, unless I'm cruising the highway for the majority of a tank. I've seen up to 23-24 on just short of half a tank doing 68-70 on I-45 in Texas.
The 93 octane is a bit more noticeable as long as I stay out of the throttle in town. I've seen about a 0.5-1 mpg in the city driving a meaningful distance (> 5-6 miles)
dirtydizzle2007 22 hours ago
any mpg increase with custom tune?
csisterh 1 day ago