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06-07-2011, 01:19 PM | #326 |
Scooby Guru
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SCIC
Location: Tuning Lab
Vehicle:CEO PhatBottiTuning 2006 STi GTX3582 + Meth |
IMO anything in the 49-52 lbm turbo range is the perfect DD turbo for a 2.5L. Green, 3076, any of the Dom xt/xtr's in that range.
With the increased compression and e85 i'd go up to a dom3xtr or dom4xtr. I've been DD'ing the dom4xtr on 91+meth for 18months and its great and i didnt feel any great loss in spool compared to the OG Green or HTA Green.
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06-07-2011, 01:29 PM | #327 |
Former Vendor
Member#: 178047
Join Date: Apr 2008
Chapter/Region:
SWIC
Location: AZ
Vehicle:02 WRX STI Spec C Black |
No GTX in stock location. The GTX spool later then the GT. I have dont a ton of them now. They are made for road/drag racing, response and top end power. You want low to midrange.
For an autoX car, i would just do a Stock turbo on E85. You get 450ft bls and 360hp with fast spool. Nice broad power band. Of course my favorite for a street car is the 8CM 20G. Near stock spool, Cheap and they will do 400+ easy on E85. I have not had good luck with the maybe 20 or 30 GT3071s. Its just to small for the 2.5. You end up making less power then the cheap 20G and I see no advantage anywhere else. Leave that one for the 1.8 honda guys and 2.0 WRXs. C |
06-07-2011, 02:19 PM | #328 | |
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TXIC
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Vehicle:2003 Sonic Yellow Marginally well behaved. |
Quote:
Not sure what you mean by the 3071 being too small...i was worried about it being too big. Just talked with Jeff at Perrin and he suggested the Dom 2.5, or even the smaller Dom 1.5, both are available with 8cm or 10cm housings. |
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06-07-2011, 02:27 PM | #329 |
Former Vendor
Member#: 178047
Join Date: Apr 2008
Chapter/Region:
SWIC
Location: AZ
Vehicle:02 WRX STI Spec C Black |
I am talking about E85. On E85 the Stock turbo does about 350. On e85 the 20G will go right over 400 easy.
C |
06-07-2011, 02:33 PM | #330 |
Scooby Specialist
Member#: 82146
Join Date: Mar 2005
Chapter/Region:
South East
Location: Raleigh, NC (Brier Creek)
Vehicle:2005 Legacy GT OBP |
Yeah if you're running e85 i would go 20g or maybe even HTA68 (there are some 390hp plots on the thread but it may be on happy dynos) will get you close on E-85 and will have crap-tons of low end torque and response to pull you out of turns.
the turbos you mentioned are 400whp on pump gas sized turbos. (well the 3071 is a little small for that) if i were you i'd be looking at HTA68 8cm housing, 20g (td06?), and the biggest turbo i would consider is the atp3071/dom2.5xtr |
06-07-2011, 02:49 PM | #331 |
Former Vendor
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Vehicle:02 WRX STI Spec C Black |
Skip the HTA68 IMO
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06-07-2011, 03:13 PM | #332 | |||
Scooby Guru
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:07 FPgreen 7.37@95 WRX VF39+E85 12.0, 121mph |
Quote:
Quote:
Quote:
A OG FP green spool amazing on E85 with a 7cm2. I make 420whp and only lost a few rpm compared to my VF39. Do you guys really believe on high compression making a difference? |
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06-07-2011, 03:13 PM | #333 |
Scooby Specialist
Member#: 82146
Join Date: Mar 2005
Chapter/Region:
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Location: Raleigh, NC (Brier Creek)
Vehicle:2005 Legacy GT OBP |
^^ the more i looked into it... i agree skip the hta68...
^ it makes an efficiency difference so it should help both spool, and power. But it should help mpg the most lol. |
06-07-2011, 06:50 PM | #334 | |
Scooby Newbie
Member#: 123652
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International
Location: Australia
Vehicle:2003 STi Built EJ257 APS SR55 380WHP@20psi |
Quote:
Have you done any GTX3071's yet? Interested in seeing how they compare to the GT3076. When you say the GTX's are coming on later than the GT's, roughly how much difference is there between the GTX30 and GT30, spool and power(on a biult motor with cams and porting)? Thanks. Last edited by hally; 06-07-2011 at 07:01 PM. |
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06-07-2011, 07:02 PM | #335 |
Former Vendor
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SWIC
Location: AZ
Vehicle:02 WRX STI Spec C Black |
Juan. We are talking about E85. A Cheap 20G will do 400 very easy on E85. It also spools super fast. Win win.
I dont have any GTX3071 info to share. I wish I did. The GTX does come on later. It depends on the set and engine of course. However, It direct swaps, On the 30R version there seems to be 300 to 400 rpm later. The good news is that they make more power up top. So most of the time its a win. But for a street car on pump gas, I would get the Regular GT3076. Its a delight. Shawn: On E85 its simple: Stock turbo 350 (maxed) 20G with 8cm housing: 400+ super easy. Dom 3 stock location 450 easy but much more lag. C |
06-07-2011, 07:16 PM | #336 | |
Scooby Newbie
Member#: 123652
Join Date: Aug 2006
Chapter/Region:
International
Location: Australia
Vehicle:2003 STi Built EJ257 APS SR55 380WHP@20psi |
Quote:
Currently have APS SR55(GT3076) bolton at 412whp on 20psi, tried 25psi just wont push the air. Wanting a billet that still add power past 20psi. Atm, 20psi hits at 3700rpm in 4th on a short ratio 6mt. The GTX30 on 25psi should see more at 4k(midrange) and more near redline? Was thinking of just getting a GTX30 with 3in cover and fitting it straight to my APS rear housing. |
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06-07-2011, 07:55 PM | #337 | |
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TXIC
Location: Cute fuzzy cuddly kitten hell.
Vehicle:2003 Sonic Yellow Marginally well behaved. |
Quote:
Clark, you're awesome man...Thanks! Now, you wanna come back to Texas and tune her to 400 whp for me? |
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06-08-2011, 12:11 AM | #338 |
Scooby Newbie
Member#: 269226
Join Date: Jan 2011
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Has anyone asked ATP if they're going to do a stock location GTX3071? I imagine they will as they've already done them for Evos.
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06-08-2011, 07:28 AM | #339 |
Scooby Newbie
Member#: 187419
Join Date: Aug 2008
Chapter/Region:
Tri-State
Location: Southold, NY
Vehicle:2001 2.5RS Sedona Red |
Clark, I tried to send you a PM to keep the OT convo to a minimum. Could you send me your email or something so I can ask you a few questions?
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06-08-2011, 11:25 AM | #340 |
Scooby Specialist
Member#: 82146
Join Date: Mar 2005
Chapter/Region:
South East
Location: Raleigh, NC (Brier Creek)
Vehicle:2005 Legacy GT OBP |
I don't see ATP making a GTX 3071 stock location. I don't know if they require the anti-surge housing or what the deal is but if they were going to do it i think it would be done by now. It should just be using their gt3076 turbine housing with a gt3071 compressor cover if they were going to do it i would think it would be just off the shelf parts.
My thoughts are either they did it and the results were either poor (compressor surge/laggy)or identical to the 3076 so they couldn't justify the cost. Or I'm completely wrong and their existing housings won't fit and they're in development now. the inducer is slightly larger so maybe they need a new compressor cover. Last edited by sumfoo1; 06-08-2011 at 11:27 AM. Reason: . |
06-08-2011, 11:40 AM | #341 | |
Scooby Guru
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:07 FPgreen 7.37@95 WRX VF39+E85 12.0, 121mph |
Quote:
I will be testing one of the newer billet 20gs soon, we will see at what power maxes out. My OG FP green ported 7cm2 makes 420whp maxout on E85. |
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06-08-2011, 11:47 AM | #342 |
Scooby Specialist
Member#: 82146
Join Date: Mar 2005
Chapter/Region:
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Location: Raleigh, NC (Brier Creek)
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^ what turbo inlet pipe are you using?
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06-08-2011, 11:54 AM | #343 |
Scooby Guru
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:07 FPgreen 7.37@95 WRX VF39+E85 12.0, 121mph |
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06-08-2011, 12:00 PM | #344 | |
Scooby Newbie
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Join Date: Jan 2011
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06-08-2011, 12:21 PM | #345 |
Scooby Specialist
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MWSOC
Location: Minnesota
Vehicle:2003 WRX NF Performance |
*impatiently waiting for the gtx3071r to arrive*
Been over a month, but it's not for a subaru also, lol |
06-08-2011, 12:39 PM | #346 |
Scooby Newbie
Member#: 187419
Join Date: Aug 2008
Chapter/Region:
Tri-State
Location: Southold, NY
Vehicle:2001 2.5RS Sedona Red |
What about the GTX3071 and GTX3076 on pump gas (93) and no meth on a 2.5L? Or the regular GT models for that matter. Understandably most people who go to this level of modification install meth injection at the same time but I'd like to see what the numbers and spool look like. I'll probably get meth injection eventually but want to know if I should bother running one of these turbos without it. I would rather not be dependent on meth in my DD then have the option to turn the system on and load a different tune when I want to beat on my car. I've been poking around looking for results but don't remember finding a similar setup. I know both here and in the EFR thread Jeff wanted to test with the meth turned off but didn't have time.
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06-08-2011, 09:08 PM | #347 | |
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06-08-2011, 10:01 PM | #348 |
Scooby Newbie
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06-08-2011, 10:19 PM | #349 | |
Scooby Newbie
Member#: 187419
Join Date: Aug 2008
Chapter/Region:
Tri-State
Location: Southold, NY
Vehicle:2001 2.5RS Sedona Red |
Quote:
I would like to see a setup with the .63 a/r turbine no meth. And a GT/GTX3071 with no meth. I want a little quicker spool but still hoping to get in the 400whp/tq range. by time I hit 5000RPM in my small town I am already on the brakes... Last edited by CJ68; 06-09-2011 at 01:35 PM. |
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06-08-2011, 10:36 PM | #350 |
Scooby Newbie
Member#: 285153
Join Date: Jun 2011
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How do you guys enjoy the new turbo's on your car? is it an extreme difference over stock?
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