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Old 01-14-2020, 03:09 PM   #1
shemoves
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Default Power estimate for 3071 on 91

I am looking at what power numbers turbos should produce. I see a lot of threads in PPB with people running 100 or E85, but little with 91. What would a Garrett GTX3071R Gen II produce in an '05 STi on 91 octane with a large TMIC, 272 cam, and other appropriate fuel, built engine, etc mods make? (Rough estimate, of course.)
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Old 01-14-2020, 04:03 PM   #2
Bansheeboy11
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On pump, id say 380-400whp conservatively. 410-430 if you get a little more aggressive. Theres plenty of places to look into that info as well, checking shops dyno databases is a good start.
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Old 01-14-2020, 06:28 PM   #3
Waddlz
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Really depends on the dyno.

have you baselined your car?

You could have 1 dyno say your car makes 500 whp on 91, and another say 400.

It means nothing unless you have a baseline number to go off of.

for lulz, I'd say 380-400 whp on 91.
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Old 01-14-2020, 09:27 PM   #4
subaru_gc8
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Quote:
Originally Posted by shemoves View Post
I am looking at what power numbers turbos should produce. I see a lot of threads in PPB with people running 100 or E85, but little with 91. What would a Garrett GTX3071R Gen II produce in an '05 STi on 91 octane with a large TMIC, 272 cam, and other appropriate fuel, built engine, etc mods make? (Rough estimate, of course.)
id say a little less tha 380 due to the tmic. if you go fmic you can get alot more, BTW you dont need cams at those power levels

Last edited by subaru_gc8; 01-15-2020 at 02:34 AM.
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Old 01-14-2020, 11:52 PM   #5
shemoves
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Really? That's higher than I thought--esp for 91 octane.
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Old 01-15-2020, 11:05 AM   #6
sluflyer06
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Quote:
Originally Posted by Bansheeboy11 View Post
On pump, id say 380-400whp conservatively. 410-430 if you get a little more aggressive. Theres plenty of places to look into that info as well, checking shops dyno databases is a good start.

a 3071 on 91? Probably 360 tops or slightly less on a dyno if it isn't high reading. 3071 has similiar power output to a 20g with a big hotside except the 3071 can match the low end of the stock turbo.

Back in the day when I had my 06' I was planning on moving from a clipped 20g-td06 with EWG to a 3071R and there were lots of dyno sheets available back then with the 3071 setups and on 93 they were about 360 but the low end was amazing having a largish turbo that could spool as fast as a VF.
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Old 01-15-2020, 11:07 AM   #7
shemoves
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Quote:
Originally Posted by Waddlz View Post
Really depends on the dyno.

have you baselined your car?

You could have 1 dyno say your car makes 500 whp on 91, and another say 400.

It means nothing unless you have a baseline number to go off of.

for lulz, I'd say 380-400 whp on 91.
No baseline, but my tuner uses a Dyna Pack.
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