GTP38R Big difference over stock? - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 04-05-2008, 02:06 PM Thread Starter Rookie
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GTP38R Big difference over stock?

I'm looking at GTP38R, and wanted to get some input from anyone who has uprgraded from stock with this turbo. How much difference did it make? Lot more power? What about MPG if ya take it easy with it?

2003 F350 Crew Cab 4X4
TS Performance 6 pos with Wildman tunes, 3 Pillar, EGT, Boost, Trans gauges, 5 inch turbo back straight pipe, Banks wheel, & Turbo Master wastegate, 2 inch lift
Soon to install Zoodad and Amsoil dual bypass filter.
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post #2 of 3 Old 04-05-2008, 03:11 PM
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Can't help you much with this as I added injectors at the same time and some other stuff. Did these additions make a difference in power? Yes!! As far as the MPG's go, cruising or towing I don't see alot of difference. I have a hard time keeping my foot out of it around town so it is hard to tell there.

01 LWB CC SRW 4x4 7.3 auto
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post #3 of 3 Old 04-07-2008, 11:26 AM
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There won't be much of any difference. You need more fuel to light the bigger turbo...

It'll pull harder top end and smoother, but it'll lag slightly more then your factory turbo off the line.

You'll see less "boost" because you're moving larger volumes of air... which is better.

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