Compression Ignition Addict
Join Date: Jan 2008
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6637 on the intake all the way ~ mpg change ...slight if any
might hear the turbo and surge a little more
straight pipe works great , 4" back does also ~ slightly quicker
spool and slight mpg maybe
lift is not gonna help mileage as more resistance from airflow is
getting underneath but it will sure look better
sitting on 35's with 6" and avg 14mpg here and dont baby it or
attempt for high mpg
tuner will help if you dont drive like a madman...goodluck
on my old 350 i was 16 mpg stock and put a 6" lift with 37's and and dropped to 13....after straight pipe , valve body , 6637 and tuner i was back at 16 again driving 75-80 on freeway
nice buy by the way !!
Sold 01 350 6" on 37's and mild mods, 00 X 4" on 35's, 02 f350 4" 35's molded from fan to drive shaft, ridin the 03 with nose conversion with 125k and counting upwards slowly.
Never had CNC on any of it, never will.
Take 3/4 of the info and recommendations on here with a grain of salt