Compression Ignition Addict
Join Date: Aug 2007
Location: New Martinsville, West Virginia
Thanked 54 Times in 52 Posts
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In any order, gauges, intake, exhaust BEFORE any tunes...
I like the DIY intake/6637 filter mod, cheap, easy, quick, great results.
Straight pipe the stock exhaust, the stock muffler is the real bottle neck, no real gains in upping the rest of the system untill you're pushing 400+ hp, aside from exhaust note/tone.
Gauges should be EGT, Boost, Trans Temp (for auto trans), doesn't hurt to do them first or last, just be sure to have the EGT before any tunes, you'll see why once you start watching the gauge stock vs tuned. I like Auto Meters, and I like the mechanical trans temp better than the electronic one, install is a little more involved, due to needing to weld a 1/2" NPT bung in the trans pan for the thermocouple probe.
'99 E350 DRW Stahl 11' util box van, 7.3 PSD, stock. 138k SOLD
'00 F350 extcab, 9' utility bed, dually 228k
E'99 F250 extcab, S/Bed 211k. Sidelined due to motor issues.
'00 Excursion Limited, 7.3PSD 294k
'84 Chevy K-30, 6.2L TD, woods/trail beater. 141k