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bradsm87 bradsm87 is offline
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Default 06-21-2017, 12:07 AM

Quote:
Originally Posted by MalibuMafiaV
That sounds extremely under powered and dangerous. I'd be worried....
Not at all. That's a lot of power! It sounds like a genuine accurate power reading unlike some of the silly numbers that get around on forums.
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JacquesN55 JacquesN55 is offline
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Default 06-21-2017, 12:31 AM

Im going with GTX3576R.


2011 135 n55 DCT RHD, MAMBA GTX3576R single turbo kit by CCD South-Africa,FBO,Fuel IT TBI and Stage2 Lpfp,BMS Jb4 and FSB,Devels Own meth kit. 3.5 inch single exhaust.
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Tony@VargasTurboTech Tony@VargasTurboTech is offline
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Default 06-21-2017, 07:06 AM

Quote:
Originally Posted by JacquesN55
Im going with GTX3576R.
Jacques not to question your choice. But why would you do that? That's prob the worst combination Garrett turbo out there. The GTX3076R is rated for the SAME power as the GTX3576R, so you gain nothing with the 35 turbine wheel except lag. Its the same compressor so its not going to flow anymore. If you want a 76mm compressor run the GTX3076R, if you want a 35 turbine, match with the 82mm compressor wheel, and go with the GTX3582R


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JacquesN55 JacquesN55 is offline
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Default 06-21-2017, 07:30 AM

Tony i just want 550whp to 600whp. So thats why i chose the GTX3576R with a .73 AR turbine housing.


2011 135 n55 DCT RHD, MAMBA GTX3576R single turbo kit by CCD South-Africa,FBO,Fuel IT TBI and Stage2 Lpfp,BMS Jb4 and FSB,Devels Own meth kit. 3.5 inch single exhaust.
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JacquesN55 JacquesN55 is offline
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Default 06-21-2017, 07:31 AM

Also the compressor housing i chose was .70


2011 135 n55 DCT RHD, MAMBA GTX3576R single turbo kit by CCD South-Africa,FBO,Fuel IT TBI and Stage2 Lpfp,BMS Jb4 and FSB,Devels Own meth kit. 3.5 inch single exhaust.
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JacquesN55 JacquesN55 is offline
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Default 06-21-2017, 07:33 AM

I am 5500ft above sea level and i made 505whp with my old pure setup. So i would love to do morw than pure stage 2 but not more than 600whp.


2011 135 n55 DCT RHD, MAMBA GTX3576R single turbo kit by CCD South-Africa,FBO,Fuel IT TBI and Stage2 Lpfp,BMS Jb4 and FSB,Devels Own meth kit. 3.5 inch single exhaust.
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Tony@VargasTurboTech Tony@VargasTurboTech is offline
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Default 06-21-2017, 07:33 AM

I do not think you are listening to me. So if you want that power, go with a GTX3076R, thats right in its range. Literally the ONLY thing you are gaining by going with the 3576R is addtional turbo lag, because as I said its rated for the SAME POWER. Adjusting Turbine AR ratio to make up for a poorly chosen turbo size is not the right way to do things


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Default 06-21-2017, 07:34 AM

+1

Quote:
Originally Posted by Tony@VargasTurboTech
I do not think you are listening to me. So if you want that power, go with a GTX3076R, thats right in its range. Literally the ONLY thing you are gaining by going with the 3576R is addtional turbo lag, because as I said its rated for the SAME POWER. Adjusting Turbine AR ratio to make up for a poorly chosen turbo size is not the right way to do things


2008 335XI(E92) AT/ garrett gtx3582r with jpworks manifold 1.06AR housing/ tial mv-s 38mm wgs(13.5 psi springs)/ tial bov/ fuel it level1 upgrade/ index 12 injectors/ N20 Map sensor/JB4 ST TS BEF with MHD/ Alpina Flash for now.
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JacquesN55 JacquesN55 is offline
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Default 06-21-2017, 07:50 AM

Thanks for letting me know Tony. Just wish it was earlier. Before i bought the turbo.


2011 135 n55 DCT RHD, MAMBA GTX3576R single turbo kit by CCD South-Africa,FBO,Fuel IT TBI and Stage2 Lpfp,BMS Jb4 and FSB,Devels Own meth kit. 3.5 inch single exhaust.
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bradsm87 bradsm87 is offline
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Default 06-21-2017, 10:23 PM

Quote:
Originally Posted by Tony@VargasTurboTech
Jacques not to question your choice. But why would you do that? That's prob the worst combination Garrett turbo out there. The GTX3076R is rated for the SAME power as the GTX3576R, so you gain nothing with the 35 turbine wheel except lag. Its the same compressor so its not going to flow anymore. If you want a 76mm compressor run the GTX3076R, if you want a 35 turbine, match with the 82mm compressor wheel, and go with the GTX3582R
I disagree. The GT3076R was already pushing it for compressor to turbine ratio. The GTX flows a fair bit more again (about the same as the GT3582R). That's why the GTX3576R was introduced. I personally know people that have had excellent results from the GTX3576R, definitely more than what the GTX3076R would get, with very good spool. Definitely much better spool than a GT3582R or GTX3582R. One friend of mine upgraded from a GT3076R to a GTX3576R and the gains were huge, way more than just changing to a GTX compressor wheel would make. Most of the gains were from the bigger turbine. Same A/R turbine housing. The extra leverage and area from the larger turbine makes back a lot of the spool loss from the heavier weight. Also it has a better U/Co ratio from the better compressor to turbine size ratio. I would get a GTX3576R over a GTX3076R every time, especially for a 3L motor.
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JacquesN55 JacquesN55 is offline
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Default 06-22-2017, 02:06 AM

Hi what power did your friend make with his GTX3576R.


2011 135 n55 DCT RHD, MAMBA GTX3576R single turbo kit by CCD South-Africa,FBO,Fuel IT TBI and Stage2 Lpfp,BMS Jb4 and FSB,Devels Own meth kit. 3.5 inch single exhaust.
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bradsm87 bradsm87 is offline
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Default 06-22-2017, 03:37 PM

Quote:
Originally Posted by JacquesN55
Hi what power did your friend make with his GTX3576R.
I don't think it's that relevant because it was an old 2.5L 1JZ non-vvt and our Australian dynos are a lot more honest. It was 330rwkw from memory and it made around 270 with the GT3076R before it. Boost was the same.
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(#38)
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Default 06-23-2017, 07:32 AM

Quote:
Originally Posted by bradsm87
I disagree. The GT3076R was already pushing it for compressor to turbine ratio. The GTX flows a fair bit more again (about the same as the GT3582R). That's why the GTX3576R was introduced. I personally know people that have had excellent results from the GTX3576R, definitely more than what the GTX3076R would get, with very good spool. Definitely much better spool than a GT3582R or GTX3582R. One friend of mine upgraded from a GT3076R to a GTX3576R and the gains were huge, way more than just changing to a GTX compressor wheel would make. Most of the gains were from the bigger turbine. Same A/R turbine housing. The extra leverage and area from the larger turbine makes back a lot of the spool loss from the heavier weight. Also it has a better U/Co ratio from the better compressor to turbine size ratio. I would get a GTX3576R over a GTX3076R every time, especially for a 3L motor.
I will just leave this right here.... Facts are facts If anyone wants to read the entire article its here. Very well written, and thorough testing... http://blog.perrinperformance.com/ga...omparo-part-2/

Here us a snippet... "Moving on to 1.5 bar then 1.7 bar I found the exact same thing! Only difference was i added a bit more fuel (no power change). I was really wondering when this larger more efficient compressor wheel was going to start coming into play. I felt cheated a bit so I started tuning the 1.7 bar range. I added some timing, leaned it out, and basically the changes were not worth anything, maybe 5WHP. I put the changes back and hoped that 1.9 bar would show some real gains.

So one last ditch effort, I ran it at at 1.9 bar and guess what! NOTHING!! It made the exact same power as the GTX3076R in all instances and since it was laggier, it made less peak TQ."



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Last edited by Tony@VargasTurboTech; 06-23-2017 at 07:40 AM..
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08_335i 08_335i is offline
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Default 06-23-2017, 01:06 PM

Quote:
Originally Posted by MalibuMafiaV
That sounds extremely under powered and dangerous. I'd be worried....
Why? It's right on par, actually. 57/61 turbo, with my PTE 5862 on pump and 19.5psi I made 500rwhp.
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08_335i 08_335i is offline
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Default 06-23-2017, 01:09 PM

Quote:
Originally Posted by Tony@VargasTurboTech
I will just leave this right here.... Facts are facts If anyone wants to read the entire article its here. Very well written, and thorough testing... http://blog.perrinperformance.com/ga...omparo-part-2/

Here us a snippet... "Moving on to 1.5 bar then 1.7 bar I found the exact same thing! Only difference was i added a bit more fuel (no power change). I was really wondering when this larger more efficient compressor wheel was going to start coming into play. I felt cheated a bit so I started tuning the 1.7 bar range. I added some timing, leaned it out, and basically the changes were not worth anything, maybe 5WHP. I put the changes back and hoped that 1.9 bar would show some real gains.

So one last ditch effort, I ran it at at 1.9 bar and guess what! NOTHING!! It made the exact same power as the GTX3076R in all instances and since it was laggier, it made less peak TQ."

I actually really appreciate this post, Tony. Do you think it had to do with the smaller AR ratio on the bigger 35?
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bradsm87 bradsm87 is offline
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Default 06-23-2017, 02:30 PM

Quote:
Originally Posted by Tony@VargasTurboTech
I will just leave this right here.... Facts are facts If anyone wants to read the entire article its here. Very well written, and thorough testing... http://blog.perrinperformance.com/ga...omparo-part-2/

Here us a snippet... "Moving on to 1.5 bar then 1.7 bar I found the exact same thing! Only difference was i added a bit more fuel (no power change). I was really wondering when this larger more efficient compressor wheel was going to start coming into play. I felt cheated a bit so I started tuning the 1.7 bar range. I added some timing, leaned it out, and basically the changes were not worth anything, maybe 5WHP. I put the changes back and hoped that 1.9 bar would show some real gains.

So one last ditch effort, I ran it at at 1.9 bar and guess what! NOTHING!! It made the exact same power as the GTX3076R in all instances and since it was laggier, it made less peak TQ."

Neither of those turbos are a GTX3576R! One is a GTX3582R which has a too big compressor for the turbine on one end and choked with a tiny .63 turbine housing on the other end. No wonder it doesn't perform. The other is a GTX3076R .82 which does much better but that's not to say a GTX3576R with the right A/R twin scroll turbine housing wouldn't do better again. Also that's a 4 cylinder 2.5L engine. For our 3L 6 cylinder, I'd definitely opt for a GTX3576R with the 1.01 divided (similar flow to .82 single scroll) twin scroll turbine housing.
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IssueZ901 IssueZ901 is offline
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Default 03-21-2018, 10:25 PM

OK well l know this thread has gone a little quiet. So I thought I would buy a GTX3076r T3 .63 and wack it on to see what happens. My gt3582r .82 spun up to 20psi at 4200rpm, same tune just change the turbo and the GTX ramps up at 3500rpm with sign that it juuuuuuuuust starts to choke above 6000rpm. Watch this space for photo's and logs once I get the tune adjusted! It feels sooo much better below 3500rpm too. Which is what I was looking for because AT life.


2008 135I M-SPORT. AT. ST GTX3076R. JB4/TREBILA BEF. XHP STAGE 3. PUMP98 & 70/30 METH DPI. FOCAL IFBMW-C +IFBMW-S.
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IssueZ901 IssueZ901 is offline
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Default 03-21-2018, 10:59 PM

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2008 135I M-SPORT. AT. ST GTX3076R. JB4/TREBILA BEF. XHP STAGE 3. PUMP98 & 70/30 METH DPI. FOCAL IFBMW-C +IFBMW-S.
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Cloud9Blue Cloud9Blue is offline
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Default 03-22-2018, 08:04 AM

Looks great. Glad to see some smaller single turbo setups are getting more popular.

Just wondering, you are using the standard T3 undivided housing correct?


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JacquesN55 JacquesN55 is offline
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Default 03-22-2018, 08:57 AM

Awsome.


2011 135 n55 DCT RHD, MAMBA GTX3576R single turbo kit by CCD South-Africa,FBO,Fuel IT TBI and Stage2 Lpfp,BMS Jb4 and FSB,Devels Own meth kit. 3.5 inch single exhaust.
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gixercho gixercho is offline
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Default 03-22-2018, 09:05 AM

My car was with GT30 frame turbo with 79HTA wheel, i have logs with it, but never dyno it.
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IssueZ901 IssueZ901 is offline
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Default 03-22-2018, 05:31 PM

Correct, T3 undivided housing. Unfortunately the guy who made the kit for me decided not to do twin scroll. :-(


2008 135I M-SPORT. AT. ST GTX3076R. JB4/TREBILA BEF. XHP STAGE 3. PUMP98 & 70/30 METH DPI. FOCAL IFBMW-C +IFBMW-S.
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JacquesN55 JacquesN55 is offline
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Default 03-23-2018, 12:43 AM

Please post a log.


2011 135 n55 DCT RHD, MAMBA GTX3576R single turbo kit by CCD South-Africa,FBO,Fuel IT TBI and Stage2 Lpfp,BMS Jb4 and FSB,Devels Own meth kit. 3.5 inch single exhaust.
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JacquesN55 JacquesN55 is offline
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Default 03-23-2018, 12:44 AM

I whent with GTX3576R bottom mount on my N55


2011 135 n55 DCT RHD, MAMBA GTX3576R single turbo kit by CCD South-Africa,FBO,Fuel IT TBI and Stage2 Lpfp,BMS Jb4 and FSB,Devels Own meth kit. 3.5 inch single exhaust.
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Cloud9Blue Cloud9Blue is offline
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Default 03-23-2018, 07:17 AM

Quote:
Originally Posted by IssueZ901
Correct, T3 undivided housing. Unfortunately the guy who made the kit for me decided not to do twin scroll. :-(
well, it doesn't seem like you lose much with the GTX despite the undivided manifold.


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