Which high flow turbo outlet? - Ford Powerstroke Diesel Forum
View Poll Results: Which turbo outlet has more benefits for my application?
Garret Style Turbo Outlet 1 50.00%
Stealth Automotive Style Outlet 1 50.00%
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post #1 of 9 Old 06-29-2012, 04:25 PM Thread Starter
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Which high flow turbo outlet?

I am looking into deleting the factory style warm up valve and also add the non EBPV pedestal in the near future.

My truck (00 Excursion, 7.3, 4x4, 35's, 8600lbs) currently has the following mods:

3.5" downpipe, Banks muffler, AFE Stage 2 intake, Banks Quick Spool (1.0), Banks Compressor wheel (Anti-Surge), and Superchips Tuner.

Here is what I have been looking into:

(1) The oem style garret housing offered by riffraffdiesel (2.75"):
Riffraff Diesel: Garrett GTP38 High Flow Outlet

(2) Or the Turbonetics oversize housing (3.25"):

http://www.riffraffdiesel.com/mm5/me...X1-TRB-TOUTLET

Last edited by 572ysc; 07-01-2012 at 03:39 PM.
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post #2 of 9 Old 07-01-2012, 03:40 PM Thread Starter
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Just noticed that the oversize housing is actually made by turbonetics.
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post #3 of 9 Old 07-02-2012, 06:31 PM Thread Starter
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No input from anyone?
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post #4 of 9 Old 07-05-2012, 11:59 AM
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I just ordered the garrett outlet. I couldn't see how the extra .5" would make a big difference on a stock turbo.

2014 F150 SCREW XLT 4x4 Ecoboost.

Last edited by blderman; 07-05-2012 at 11:59 AM. Reason: typo
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post #5 of 9 Old 07-05-2012, 12:51 PM
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I went with the Garrett when I put my 38R in. Happy with it.


______________________________________________
Mike

SOLD
Mods: BD-X monitor, 6637, BTS, GT38R, Snow MPGMax, International up-pipes, Hi-Flow Outlet, 5" Diamondeye, HPx, FRx, Gearhead tunes, Tru-Cool tranny cooler, Remote Start

376HP 791ft-lbs on 10.15.11
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post #6 of 9 Old 07-06-2012, 03:51 AM Thread Starter
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Thanks for all the info. I was originally gonna go with the turbonetics one but was concerned about a loss in exhaust velocity. Also the sealing area seemed to be a little less. So now I will probably just go with the garret unit.

Thanks again!

00 Excursion 7.3 (1.0 Ex. hsng., 3.5" downpipe, Aero Muffler, Banks WG, Banks Comp. Wheel, AFE Stage 2 Air intake, HPX, IAH delete, DP- Tuner F6, Riffraff Boost Fooler, Melling Oil Pump), Fuel lab 41402 pump and regulator, fuel bowl delete, 910 Comp Springs/Shims, DI Pushrods, Swamps HVHF IDM, SRP 1.1 HPOP Dieselsite trans and coolant filter, 203* thermostat, Sonnax valve 0.427 and tricumulator springs, Lift, MM Hubs, 35's and 3.73s, 08 diff cover, Hellwig rr. bar
326RWHP @ 731RWTQ.
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post #7 of 9 Old 04-27-2013, 04:19 PM
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Well, if you do the math, the 3.0 inch Garrett unit has a cross sectional area of 7.065 square inches and the "turbonetics" unit with it's diameter of 3.25 inches has an area of 8.292 square inches. Your exhaust is 3.5 inches so unless you have a restrictive muffler the turbo outlet will be the most choked point past the drive wheel on the turbo. The other outlet would have given you an additional 1.227 square inches of exhaust flow. I wasn't aware that exhaust velocity was particularly relevant in a turbo motor. Apologies if I am incorrect, however in the next year or two I will be picking up a 3.25" to go on the upcoming gtp38r. I have found someone who sells them new for $119.
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post #8 of 9 Old 05-04-2013, 02:58 AM
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"I will be picking up a 3.25" to go on the upcoming gtp38r"QUOTE

Up and coming new turbo????
ANy specs or HP/torque ratings?
Will it improve with stock injectors?
Recommendations on aftermarket injectors vs reliability

ADHD is starting to kick in....oh look a squirrel
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post #9 of 9 Old 05-04-2013, 07:21 AM
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Upcoming as in, when I have the cash or find an amazing enough deal I will be buying one. There is a lot of information regarding turbos and injectors.
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