2008 F150 4.2L with Dynomax UltraFlo Dual Outlet Exhaust.AVI
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@iwanna302 Yes. In fact I did the tune to boost fuel economy after upsizing my wheel and tire combo. I consistently got 18mpg with stock wheel tire combo. Dropped to 14 when I upsized. The tune got me back up to 17mpg.
jaceavery 5 days ago
@drewballs000 summit racing dot com back in june had free shipping and rebate from dynomax
jaceavery 3 months ago
where did you get this kit??
drewballs000 3 months ago
did the tune help your fuel economy?
iwanna302 5 months ago