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Old 07-02-2013, 02:26 AM   #76
morrocco88
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I wonder how this turbo would do on 92 oct plus 50/50 meth? Would it be way less impressive?

I'm thinking about trying one for just a fun DD setup
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Old 07-02-2013, 04:10 PM   #77
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Just run 100% meth...and how much power it would make would just depend on how hard u want to push it with meth. I usually leave em half way between pump and e85 to help try and save the motor if the meth fails.
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Old 07-02-2013, 09:09 PM   #78
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What so you think it would make on just pump?
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Old 07-02-2013, 10:14 PM   #79
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^^^I wonder the same. I picked up 40whp with 50/50 on my Dom3 setup, so I would probably do the same, just a real safe pump gas tune, and have the map switch with an extra 40hp with meth spraying. I thought I read the Aquamist pumps (I have the HFS-6) are not compatible with 100% meth, or is that just to cover their butt's and it works just fine?

I really want to try one of these, but this is like one of two threads I've found where someone used a GT/GTX28 anything on a Subaru
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Old 07-02-2013, 10:18 PM   #80
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I don't remember what it did on pump. Paul probably knows.

I ran 100% meth on my aquamist kit for 6-7 years and the fittings failed, not the pump
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Old 07-02-2013, 10:54 PM   #81
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Quote:
Originally Posted by morrocco88 View Post
I really want to try one of these, but this is like one of two threads I've found where someone used a GT/GTX28 anything on a Subaru
GTX28 I'd consider. GT28, no, too small.
Also look into EFR6258 for a similar powerband without the external gate. Same inducer diameter, and should be a very similar turbo to the GTX28. 6758 for a little extra up top. Those three have all proven to have nice wide VERY streetable powerbands.

IMO these three (GTX28 / EFR6258 / EFR6758) are the holy grail for the people who always wanted that extra top end with truly minimal spool loss from a vf. 10 years later we're finally seeing some turbos doing it, but, as you might expect... they aren't stock Subaru flanged, so it ain't cheap.

Part of it may be the new technologies, but I think a good portion of it was there was just no decent standalone turbos in this flow range 5 years ago. no "Garrett" 20Gish size turbo... and the Subaru flanged housing sucks balls. You couldn't really get a decent rotated 40ish lb/min turbo. 3071r was the closest you got, but I always felt that wasn't as balanced as the old 3076r.
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Old 07-03-2013, 01:03 AM   #82
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Quote:
Originally Posted by Concillian View Post

, as you might expect... they aren't stock Subaru flanged, so it ain't cheap.
.
For the most part, stock location Subaru flanged turbos are more expensive than their rotated counterparts.

A gtx28 is less than a dom2.5 and a gtx35 is barely more than a dom5xtr and the performance of the rotated ones is better
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Old 07-03-2013, 02:53 AM   #83
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I think It was about 360whp @ 19ish psi on 93. I told Ron to just keep the 93 map simple, we didnt really push it much as it would just be a backup map if I go outa town and cant get e85.
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Old 07-03-2013, 03:03 AM   #84
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That actually sounds perfect....~350whp on pump, and right around 400whp on meth! I'm already rotated T3/3" v-band, so I would just have to change my down pipe to whatever the turbine outlet is.

Do they make a T3 / 3" 4-bolt outlet like other Garretts? If so that would be ideal since I already have a down-pipe that will fit.
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Old 07-03-2013, 03:50 AM   #85
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Now you guys got me thinking of water/meth injection. I ran a aquamist kit on my 05 stock turbo STi setup will great results. I ended up doing a 75/25 VPM1/Water mix. Made 411wtq/364whp on just stock STi injectors since obviously the meth your injecting is a fuel you can lower your IDC alot and on top of that you can tune for leaner AFRs since its raising the octane, but like Ron said alot of people dont push 93+meth setups 100% on the tuning side because theres alot that could go wrong with a typical water/meth kit. Aquamist made best kits by far back 2 years ago, im assuming they are still ontop of the game now.

Id love to put together a proper pre-turbo injection setup on this car to test, It should make the compressor alot more efficient and probably raise boost pressure another 1-2psi with no other changes while also lowering the post compressor air temps WAY down which should also help my TMIC say cooler. Not really interested in doing the normal post IC water/meth injection with e85 just pre-turbo. Has anybody tried this? Also im not worried about compressor wheel tip damage as I would have the jet properly placed if I do it.
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Old 07-03-2013, 10:10 PM   #86
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Yeah, they have a sweet pre-turbo spray nozzle on Howerton Engineering's site. I want to do something like that as well. I have also never had an issue with my HFS-6, but if something does fail, It is tied into my map switch, so everything instantly switches to safe pump gas map.

Here are the pre-compressor spray setups, towards the bottom of the page
http://howertonengineering.com/hower...quamist-items/
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Old 07-03-2013, 10:17 PM   #87
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My failsafes were hooked up to my ebcs too, but the lines failed after the flow sensor....so it didn't trip
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Old 07-16-2013, 04:04 PM   #88
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Have you had any issues with heat soak with that topmount
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Old 07-17-2013, 01:45 AM   #89
morrocco88
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Quote:
Originally Posted by Phatron View Post
My failsafes were hooked up to my ebcs too, but the lines failed after the flow sensor....so it didn't trip
I was told that if you had a line break after the flow sensor, it would be detected as too much flow, and trip the failsafe. That was why you are supposed to set up your failsafe flow window on the gauge, so the failsafe would trip based on clogged flow (too little), or line breakage pre-nozzle causing too much flow.

I also wondered when you were going to do that free dyno pull?

I'm so close to buying one of these turbos and changing my setup yet again

This power band just looks tits for the street / AutoX!!!!!!!!!!!!!!!
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Old 09-10-2013, 01:53 AM   #90
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Any updates?
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Old 09-10-2013, 06:46 AM   #91
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Been still driving the car around daily and racing it about once a week and the car is still running great. My clutch is almost completely done thoe lol, I can only get one run at a time pretty much as it will start slipping once the clutch gets hot. I think im going to try out a South Bend Clutch.

This winter I plan to get a new oem shortblock, drop in the new Manley A/B sized pistons, Kelford 199b (264/260) cams, Manley single springs+TI retainers, oem valves. I want to keep the motor setup simple, easy, and reliable for up to 500whp. Also im thinking about trying out a efr 6758 or 7163 if they make non-wastegated (ewg) with vband in/out exhaust housings for them.
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Old 09-11-2013, 02:21 AM   #92
morrocco88
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Let me know if your selling the GTX28, as I would seriously be interested in picking it up!

On the new block with the Manley A B pistons....are you keeping the stock rods in there for the "reliable 500whp"?
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Old 09-11-2013, 02:59 AM   #93
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Nicely done! Man if you can squeeze out a 10.9, I can't imagine what my STi would have run. That looks like a very nice powerband, I bet transient response is awesome. Ron seems like a decent tuner

PS - you mentioned comparing to a gtx3076, here you go - http://forums.nasioc.com/forums/show....php?t=2456466
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Old 09-11-2013, 04:40 PM   #94
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Quote:
Originally Posted by morrocco88 View Post
Let me know if your selling the GTX28, as I would seriously be interested in picking it up!

On the new block with the Manley A B pistons....are you keeping the stock rods in there for the "reliable 500whp"?
Sounds good, I will be sure to let you know If I sell it. But yeah I wasnt even planning on splitting the new shortblock apart, so stock STi rods and just the manley dropin pistons for the block. I may end up splitting the block and doing rods but havnt decided yet. Id go with the 3MI stock replacement I beam rods.

Quote:
Originally Posted by pet3r View Post
Nicely done! Man if you can squeeze out a 10.9, I can't imagine what my STi would have run. That looks like a very nice powerband, I bet transient response is awesome. Ron seems like a decent tuner

PS - you mentioned comparing to a gtx3076, here you go - http://forums.nasioc.com/forums/show....php?t=2456466
Yeah the transient response on my car is just silly, I could be in 6th gear at 2500 rpms hit the gas and instantly be making positive boost pressure. I kinda lost interest in going to the dragstrip trying to hit a 10 as I starting doing racing with turns lol but I know it has it in it. My latest 11.3 @126.69 run I literally spun all of 1st gear and had a bad 1.75 60ft. I was on stock wheels and worn 225 street tires.

But your car looks nuts man, thats much better response iv seen out of most gtx3076s setup, but you also have a longer 4th gear which makes it show a better curve compared to a shorter 04-06 4th gear log. Also we were refering to comparing with the gtx3067, not gtx3076. Either way very nice setup man the car looks very strong with a much better curve I think iv ever seen for that power level.

Last edited by NA STI; 10-15-2013 at 05:43 AM.
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Old 10-14-2013, 07:07 PM   #95
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Currently have the motor pulled and 100% dissembled in my garage since my clutch was gone and iv had leaky valve seals since I had the motor. Going to do 99.75 pistons, rods, bearings and freshen everything up, just changing a few small things up like composite MAW tgv risers, cosworth top feed fuel rails, 6an fittings on the pump hanger with 6an lines all the way down, paired with the new ID1300s. Plan is to run this turbo setup a few months on the new motor and crank up to the peak boost to like 26psi and make some fun midrange tq, i think I could trap like 128mph on this setup. But I eventually plan to upgrade to the efr7163 once BW stops BSing! lol
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Old 10-14-2013, 09:36 PM   #96
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s
Quote:
Originally Posted by NA STI View Post
Currently have the motor pulled and 100% dissembled in my garage since my clutch was gone and iv had leaky valve seals since I had the motor. Going to do 99.75 pistons, rods, bearings and freshen everything up, just changing a few small things up like composite MAW tgv risers, cosworth top feed fuel rails, 6an fittings on the pump hanger with 6an lines all the way down, paired with the new ID1300s. Plan is to run this turbo setup a few months on the new motor and crank up to the peak boost to like 26psi and make some fun midrange tq, i think I could trap like 128mph on this setup. But I eventually plan to upgrade to the efr7163 once BW stops BSing! lol
Freshen up with 15k miles? My stock bearings looked good with 70k hard miles.
Good luck with the new motor.
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Old 10-14-2013, 11:29 PM   #97
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Cams! Please?
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