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Old 01-29-2013, 08:34 PM   #151
manitou
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Quote:
Originally Posted by Irv Weissmanhowerton View Post
some very impressive #'s there, showing all the haters what a quality tmic can do

When raising the base fp up to 50 or even like you did 55, do you have a gauge in the car to watch what it does at redline? or is 10-12psi not enough to worry about it going to high? I know all jr's cars pull off great #'s with not the largest injectors because of raising base fp

my setup is a rotated std 30r .82, with the 2.5i mani, kelford 199-c cams, I should be good with the same 1400 injectors and the walbro 460 hard wired like you pulled off I assume, e85 as well, Im very anxious to see what the larger mani and cams do to my powerband, wondering how far I should rev before power dies, 75-8k too much for a 30r? This set-up was balanced so feel a little better about raising the redline a touch

we ran into %100 on my old sidefeed dw1100's and dw301 fuel pump at 19-20psi, But I dont think I had the fuel pressure set-up correct, when checking/adjusting it, between the line pinched and not pinched, stock fp is 39 and 43.5, correct? do I pinch the line from the fpr or not when I'm adjusting "base" up to 50-55?

thanks
The redline is going to really depend on the short block build, the head work and the cams. I have a MPS LR 2.5, built heads +1mm valves and R199B cams. I'm running a Blouch 3.5XTR with the Walbro 465 hard wired through the stock FPC, FPR at 50 psi and IDks. Junior tuned my XTI in December at PnL with some bad/ unbalanced 1100cc injectors. We made 535 WHP/ 490 WTQ by 7 k and 80% IDC's. Now with the IDk's he bumped the redline up to 8k. The motor is 8500 capable. The heads flow well enough for 8500, we're just not sure the turbo will make more power up there! We'll see what she does. I have to run more logs for him when the weather allows. On the road on E85 it makes 28 psi by 3600 and holds it all the way to redline.
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Last edited by manitou; 01-29-2013 at 11:49 PM.
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Old 01-30-2013, 12:47 AM   #152
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Nice job guys!!! Car has to be a rocketship!!

-Mikey
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Old 02-04-2013, 11:20 PM   #153
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How do you get these numbers with the oem catback and muffler? I'm a gd guy so I might be missing out on something
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Old 02-05-2013, 12:08 AM   #154
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the 08+up is a whole nother story, when gd stock system is restrictive, the design of the new sti doesnt hold it back like before, and its a stealth
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Old 02-05-2013, 01:00 AM   #155
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Yep, what Irv said
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Old 02-05-2013, 10:22 AM   #156
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I was thinking about going with a gtx3576, but now you have me thinking otherwise.
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Old 02-05-2013, 12:05 PM   #157
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I was thinking about going with a gtx3576, but now you have me thinking otherwise.
Do it! Go with the 3576!!
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Old 02-05-2013, 01:18 PM   #158
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Why? It should make gt35r power with gt35r spool and costs more than a gt35r. The compressor maps between them are almost the same and the hotside would be the same. The only possible benefit is the smaller diameter of the compressor wheel which although it may spin up very slightly faster if you look at the compressor map it has to spin faster to flow the same air anyway. I know that's all arm chair engineering I'm hoping someone has a back to back comparison to show why it's worth it.

Edit Actually I believe a 35r has more power potential than a gtx3576 and will spool the same if not sooner.

Last edited by kakarot09; 02-05-2013 at 03:03 PM.
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Old 02-05-2013, 02:39 PM   #159
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My list of possible turbo's has the GTX3076R, looked into the X3576 but I see the X3076 being more bang for buck..not saying they aren't seriously over priced $_$

I'd like to see these turbo's spun up to or past 8k.
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Old 02-05-2013, 03:26 PM   #160
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What's the price difference between the gtx3076 and the gtx3576?
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Old 02-05-2013, 03:46 PM   #161
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Originally Posted by kakarot09 View Post
Why? It should make gt35r power with gt35r spool and costs more than a gt35r. The compressor maps between them are almost the same and the hotside would be the same. The only possible benefit is the smaller diameter of the compressor wheel which although it may spin up very slightly faster if you look at the compressor map it has to spin faster to flow the same air anyway. I know that's all arm chair engineering I'm hoping someone has a back to back comparison to show why it's worth it.

Edit Actually I believe a 35r has more power potential than a gtx3576 and will spool the same if not sooner.
The GTX3576 will spool sooner that the standard GT3582R and have as much if not more top end power. The spool of the GTX3576 will be close to the spool of the GTX3076 and it will have more top end power. The wheel pairing of the 3576 is made for our 2.5 liter motors. I like it better than the 3076 with the 68mm turbine wheel vs the 60mm wheel of the 3076.

I am running the Blouch version of the 3576,the Dom 3.5XTR. The difference is the Blouch stock location version uses a 64mm turbine wheel (a wheel that Garret developed but does not use on any current models), Garrett CHRA vs the 68mm turbine wheel of the GTX3576. I am slightly handicapped by the stock location intake piping and compressor housing but have found that my set up spools as fast or faster than most of the Dom 3XTR's and makes more power. I made 400 ftlbs. at 4200 in 4th gerar on the PnL Dynojet with conservative timing because of some crappy unbalanced injectors I had installed at the time of tuning. After I sorted out the injectors and installed the ID 1k's I was making 28.4 psi (420 ftlbs.) at 3640 rpms in 4th gear and carrying 28 psi all the way out to my then 7800 rpm redline with no taper at all.

I know this is the Dom 3.5XTR and not the GTX3576 but really the the 3576 should perform better than my 3.5XTR given all the same conditions on my build. They should be the same price as the GTX3076 and more than the GT3582R. I would just shop around.
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Old 02-05-2013, 03:54 PM   #162
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Quote:
Originally Posted by kellygnsd View Post
What's the price difference between the gtx3076 and the gtx3576?
http://www.atpturbo.com/mm5/merchant...egory_Code=GTX

GTX3071- $1434.70
GTX3076- $1434.70
GTX3576- $1795.61
GTX3582- $1849.40
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Old 02-05-2013, 03:59 PM   #163
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Impressive numbers.
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Old 02-05-2013, 04:35 PM   #164
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Originally Posted by manitou View Post
The GTX3576 will spool sooner that the standard GT3582R and have as much if not more top end power. The spool of the GTX3576 will be close to the spool of the GTX3076 and it will have more top end power. The wheel pairing of the 3576 is made for our 2.5 liter motors. I like it better than the 3076 with the 68mm turbine wheel vs the 60mm wheel of the 3076.

I am running the Blouch version of the 3576,the Dom 3.5XTR. The difference is the Blouch stock location version uses a 64mm turbine wheel (a wheel that Garret developed but does not use on any current models), Garrett CHRA vs the 68mm turbine wheel of the GTX3576. I am slightly handicapped by the stock location intake piping and compressor housing but have found that my set up spools as fast or faster than most of the Dom 3XTR's and makes more power. I made 400 ftlbs. at 4200 in 4th gerar on the PnL Dynojet with conservative timing because of some crappy unbalanced injectors I had installed at the time of tuning. After I sorted out the injectors and installed the ID 1k's I was making 28.4 psi (420 ftlbs.) at 3640 rpms in 4th gear and carrying 28 psi all the way out to my then 7800 rpm redline with no taper at all.

I know this is the Dom 3.5XTR and not the GTX3576 but really the the 3576 should perform better than my 3.5XTR given all the same conditions on my build. They should be the same price as the GTX3076 and more than the GT3582R. I would just shop around.
Totally agree with everything. I would like to add that most don't see the same type of gains going from a gt3076 to a gtx3076 as the rest of the gtx family has seen. This is due to a maxed out 60mm turbine wheel. With the release of efr7670, garrett put together the gtx3576. Not a lot of data out there on this turbo. I've talked to a few guys that have switched over from a gtx3076 to the 3576 and they say spool characteristics are withing 200 rpm and have seen substantially more power up top. But, the turbo is a little more the the 3076 which may be a factor for some. The OP sure made some good power with his gtx3076.
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Old 02-05-2013, 04:37 PM   #165
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Quote:
Originally Posted by jtrakel View Post
http://www.atpturbo.com/mm5/merchant...egory_Code=GTX

GTX3071- $1434.70
GTX3076- $1434.70
GTX3576- $1795.61
GTX3582- $1849.40
Checkout this site:
http://cheapturbo.com/store/turbocha...s-ball-bearing
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Old 02-05-2013, 04:51 PM   #166
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The gtx3576 was made for the 2.5 ltr motor by garrett because me and some others asked for it directly. It was a simple project of swapping parts and listing parts in the catalog so there was little work to make this a reality. Its a great turbo, really has a wide power band and has enough turbine to get that heat out of the turbine.

Its also great for twin turbo V8's where we have the same issue of the turbines being to small. Most people dont bother to measure the turbine pressure and only measure compressor pressure and as a result, They dont know what they are missing.

The GTX30R will not make GT35R power period. Dont be fooled. It does make more then the GT30R as it has a larger compressor. On cars with a big external gate that can bypass a ***** ton of exhaust past the little turbine, some good power can be made. The GTX offers about 10 to 20 % more compressor flow at higher boost. At lower boost pressures of pump gas, I prefer the standard GT30 and GT35.

something to think about... Running a GTX30R hard on E85 makes alot of trq. More trq then top end power. That can be distructive on parts. Simply swapping that turbo out for the GT35R and or GTX35R on the same engine setup and boost pressure makes another 100whp+. I like free HP,big top end power and I dont like a turbo running at its max. I have swapped them all out back to back many times over the last few years. If you have the fuel system, Get the larger turbo.

C
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Old 02-05-2013, 04:58 PM   #167
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Originally Posted by Blacksheep6 View Post
Totally agree with everything. I would like to add that most don't see the same type of gains going from a gt3076 to a gtx3076 as the rest of the gtx family has seen. This is due to a maxed out 60mm turbine wheel. With the release of efr7670, garrett put together the gtx3576. Not a lot of data out there on this turbo. I've talked to a few guys that have switched over from a gtx3076 to the 3576 and they say spool characteristics are withing 200 rpm and have seen substantially more power up top. But, the turbo is a little more the the 3076 which may be a factor for some. The OP sure made some good power with his gtx3076.
That's exactly what I was told about the GTX3076 and the 3576 does better because of the better pairing of the wheels and more top end flow. The OP DID DO very well with the 3076 and with stock heads and cams. That is a testament to the DAVCS and Phatron's tuning of the car with some pretty aggressive timing. Look at the torque the OP is making with this build because of the stock cams/ heads and aggressive timing. I also think that keeping the rev limit to 7K is a good idea with the stock heads and valve train!

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These are good prices!
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Old 02-05-2013, 05:05 PM   #168
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Quote:
Originally Posted by Clark Turner View Post
The gtx3576 was made for the 2.5 ltr motor by garrett because me and some others asked for it directly. It was a simple project of swapping parts and listing parts in the catalog so there was little work to make this a reality. Its a great turbo, really has a wide power band and has enough turbine to get that heat out of the turbine.

Its also great for twin turbo V8's where we have the same issue of the turbines being to small. Most people dont bother to measure the turbine pressure and only measure compressor pressure and as a result, They dont know what they are missing.

The GTX30R will not make GT35R power period. Dont be fooled. It does make more then the GT30R as it has a larger compressor. On cars with a big external gate that can bypass a ***** ton of exhaust past the little turbine, some good power can be made. The GTX offers about 10 to 20 % more compressor flow at higher boost. At lower boost pressures of pump gas, I prefer the standard GT30 and GT35.

something to think about... Running a GTX30R hard on E85 makes alot of trq. More trq then top end power. That can be distructive on parts. Simply swapping that turbo out for the GT35R and or GTX35R on the same engine setup and boost pressure makes another 100whp+. I like free HP,big top end power and I dont like a turbo running at its max. I have swapped them all out back to back many times over the last few years. If you have the fuel system, Get the larger turbo.

C
Thanks for your info. What are your personnel experiences with the gtx3576? Do you have an dyno graphs?
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Old 02-05-2013, 05:40 PM   #169
manitou
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Quote:
Originally Posted by Clark Turner View Post
The gtx3576 was made for the 2.5 ltr motor by garrett because me and some others asked for it directly. If you have the fuel system, Get the larger turbo.
C
Amen!

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Old 02-07-2013, 01:26 AM   #170
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Nice numbers. Phatbotti tunes FTW!
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Old 02-07-2013, 01:39 AM   #171
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That's a great turbo for a very wide power band. That compressor has one of the widest usable areas at that psi level out there. I'm curious the reason behind sticking with stock cams and stock exhaust after the down pipe with such a high flowing turbo. I must say I would have expected a much more significant torque drop on the top end with these choices. If the flow is free enough, you're easily looking at a 600+ hp setup and higher if you could rev it out more. That turbo certainly doesn't roll off on the high end if the engine can flow the air. If 7k was the goal, I'm curious why a GTX3071R wasn't the choice instead. Maybe there's something specific to your choice...or headroom for future plans.
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Old 02-07-2013, 02:16 AM   #172
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I consider myself an enthusiast, but I didn't really have many specific goals. Moving from the Dom1.5 I just wanted more power and similar spool and street manners. I read about the GTX and Perrin's big post had recommended the 3076. I'm very happy with the choice.

As for heads, didn't want to be making monster monster power, and didn't want cams either since not much showed me it was really worth it for my needs: street daily driver. And stock exhaust because I prefer quiet, and inconspicuous when I'm flying down the road I'm sure with just an exhaust and rev it out to 7500 I'd hit 600whp. I want this to last, and didn't feel the need to change the oem rev limiter, and Ron didn't suggest it either.
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Old 02-08-2013, 06:42 PM   #173
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Im hoping shortly down the line when cars are together, ron will have a gtx3582 vs gtx3576 comparison (he has a gtx30r as well if he feels like testing it along with these), as well as a gt3076 vs gtx3576, im sure plenty have been waiting for those results

would love to see this gtx30r the op has cranked up near 600whp
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Old 02-11-2013, 05:47 PM   #174
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nice man
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Old 02-20-2013, 11:20 AM   #175
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I've been tracking my 0-60 times with the AP since I had my 2011 WRX. I just got the transmission rebuilt, replacing a broken interlock arm, adding new synchros to 2 and 3, and also replacing 2nd gear. Man is this transmission WAY better now.

I always had problems getting into 3rd at high RPM (drag launches), the previous owner(s) had definitely left their mark on the trans. Now that its back, it's a piece of cake to shift it.

Pulled my best 0-60 (based on the AP) with the new rebuild, I think there's a 10s run in her

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