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09-17-2012, 04:06 PM | #1 |
Scooby Guru
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2011 WRX w/ EWG/FMIC/STGII++ tuned by Tim Bailey
Facility: COBBTuning SoCal
Tuner: Tim Bailey Type of Dyno: Mustang Boost: 16 Fuel: 91 Peak HP at RPM: 326whp Peak Torque at RPM: 337wtq Relevant Power Mods: AEM Cold Air Catless Downpipe Invidia Q300 Catback TurboXS Bypass Valve Tial 38mm MV-S External Wastegate Grimmspeed EWG Up-Pipe COBB 3 Port EBCS DW65C Fuel Pump RacerX Front Mount Here's a cell capture of the plot Tim Bailey is the freakin man, this is the best the car has EVER driven. Couldn't be more happy with the numbers!!! Thanks COBB! |
09-17-2012, 05:23 PM | #2 |
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What turbo are you running? I can't see you making that much power on the vf at 16 psi on 91. nice numbers though. I have a similar setup with only bigger TMIC and was just curious.
Last edited by bluepearlrex12; 09-17-2012 at 05:29 PM. |
09-17-2012, 05:41 PM | #3 |
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VF52, stock turbo.
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09-17-2012, 07:04 PM | #4 |
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nice numbers
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09-17-2012, 07:40 PM | #5 |
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Nice numbers! But i cant imagine that with only 16psi n 91 oct....
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09-17-2012, 07:54 PM | #6 |
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At peak power he's around 14-15psi. Just like all the other VF turbo's that are running "22psi!!11!!!". Phatron and Jr did this experiment not too long ago. Results are exactly as you see here. 22psi tapering to 14psi makes more peak torque, but similar peak power to a turbo that is 16psi tapering to 14psi.
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09-17-2012, 08:18 PM | #7 | ||
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yep, thanks man!
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09-17-2012, 08:22 PM | #8 | |
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There are various VF tuning theories, especially to keep them from tapering up so miserablely on 2.5's, but I can't find anything! |
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09-17-2012, 08:35 PM | #9 | |
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Quote:
http://forums.nasioc.com/forums/show...postcount=4974 http://forums.nasioc.com/forums/show...postcount=4979 The first is the HP curves from the dyno and the second is the logs from the dyno in Virtual Dyno (to see TQ and boost). Junior tuned one with a normal (22psi) curve, and the other with a purposely low boost that didn't spool until very late. He was just trying to prove a point. In the case of besthaticouldo's tune, the reduced peak boost will give a much more linear power response and flatter torque curve. It will pull more smoothly and still have just as much top end as any other VF. I would have gone for more peak boost (because that's fun ), but this tune is probably a very nice one for drive-ability. |
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09-17-2012, 10:09 PM | #10 | |
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09-19-2012, 11:19 AM | #11 |
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09-19-2012, 03:33 PM | #12 | |
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09-19-2012, 04:27 PM | #13 |
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Should not make much difference if you are only boosting 16 psi. The benefit of E85 is that you can run more boost without detonation. The point is that VF turbos are not big enough to flow high pressure at high RPM, it is like trying to go fast on a single speed bike.
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09-19-2012, 04:33 PM | #14 | |
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Quote:
People think you need 22psi peak boost to make this power. The peak boost is completely irrelevant to peak power with a VF turbo. The only place boost matters (in regards to peak power) is right around 5k-6krpm's. A big peak (and then taper) will be more fun and likely faster overall, but it doesn't mean it will have more peak power. |
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09-18-2012, 04:39 AM | #15 |
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thanks
Last edited by CPU GUY; 09-19-2012 at 08:10 AM. |
09-18-2012, 09:30 AM | #16 |
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16 psi peak? no way.
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09-18-2012, 10:01 AM | #17 | |
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Vehicle:2002 WRX - 750WHP 9.5s @ 150mph |
Quote:
See my posts above. Peak boost gives you high peak torque numbers. Boost at peak power is similar on this car as it is on most "22psi" VF setups. |
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09-18-2012, 12:33 PM | #18 | |
Merci Buckets
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09-19-2012, 08:12 AM | #19 | |
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09-18-2012, 11:56 AM | #20 | |
Knifey McKniferson
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Quote:
I am not sure where this boost was measured, pre or post FMIC.... would you believe the graph if he told you it was 17psi? |
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09-18-2012, 01:48 PM | #21 | |
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Let me correct myself. I see 16.4 on the dyno graph. However, the dyno numbers are irrelevant IMO without baseline numbers. That's what I was really getting at. |
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09-18-2012, 02:37 PM | #22 |
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same dyno, 8 months ago i made 306whp/336wtq on 19.5 psi on a stageII protune (intake, dp, CBE, 3port) not tuned by tim, that tune sucked.
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09-18-2012, 01:23 PM | #23 |
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Great work! Now get some bigger injectors a boost a pump and run some E85!
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09-18-2012, 01:36 PM | #24 |
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****ing awesome! I wanna see a video of this bad boy.
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09-18-2012, 01:38 PM | #25 | ||
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Quote:
Quote:
i'll get some vids soon, i'll have some autox vids from subiefest for sure. |
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