Hi,

I'm at 410whp at 27 psi, dont know if the results are ok or if I need to investigate in further problem diagnostics or just add more boost...

Mods
- forged 2.0
- hks 272 ( changed timing to intake 0° / exhaust 2°advance)
- stock intake manifold
- stock throttlebody
- full race exhaust manifold
- on maf calibration with virbant small air filter
- cop
- atp stock frame gtx3576r
- 93 pump

Timing is about 16° at 7500 (roughly, no log here atm) without knocking, afr is tappering down to 10.8:1 before redline.

 

I would of thought it would make more then that, change your cams for sure those are holding you back .

 

Thanks!
Yes current setup is not perfect at the moment but I need to know if everything looks OK or if I need to search for a problem before I buy upgrades

 

Power seems a little bit low, but I see you are also running rich on the AFR. I made ~505@wheels with ~33psi on 93oct targeting 11.5:1 AFR. If you have a good front mount you should be able to run at least 30psi assuming you have supporting mods. I would think you should be in the 460-470 range upping the boost and leaning it out to 11.5:1.

 

Thanks! So you guess 460-470 at 30psi and a bit leaner afrs?

As soon as I know I'm near normal power levels I add alcohol injection and do the final mapping for that setup

 

hello,

because i am interested in this turbo, when it hits full boost?
can you post a dyno?

thank you in advance.

Michael.

 

My buddy has this turbo and made 430whp on about 27-28 psi with pretty much every bolt on possible. I got to drive it and it spools about 4000-4500rpms but pulls all the way to his rev limit of 8200rpms. I think to fully take advantage of this turbo you'd need stronger rods (for safety increasing the torque) and a higher rev limit.

 

Your power is low for what the turbo can give. This is basically an fp black equivalent turbo, size wise, the fp back has 1mm more on the comp inducer and an exducer of 82, but is 3mm down on the turbine exducer. I would take an fp black stock frame twin scroll turbo over this all day any day, better powerband. You should be around the 480 mark@wheels on a low reader dyno, fp black makes even more.



As far as mapping is concerened, is not about how lean or rich you have the fuel map, but it is rather a combo of the timing and fuel map to get the best afr on which your setup makes the most power. To highlight what I mean, you might lean it to 11,5 afr add the allowed before knock timing as well but you might make less power than leaving the fuel map as is or leaning it to 11.0 afr and just increase timing a even more than what you did with 11,5 afr, which in conjunction will lean the afr output a bit as well. Each setup responds differently.










Marios

 

Thanks!
I think I found the problem, I used a cheap MAF to Airfilter Adapter together with a vibrant filter before switching to SD.
I had not much time yet and the SD map needs a lot of work.

but for spooling:
http://www.datazap.me/u/fabiano/evos...a=6-23&solo=23
peak is 22-23psi relativ. map parameter is in absolut
4000rpm - 15psi
4300rpm - 19psi
4400rpm - 22psi

with disabled boost controller (it is currently a apexi avcr), a bit more spool should be no problem.

I will add a dynosheet once I`m done

 

Isn't 16° a bit much for 93oct?

 

No signs of knock on Logs and plex knock monitor

 

The GT30 turbine, in almost any form, is no pump gas monster. This has been pretty solidly established. If you want high pump gas power, you need low exhaust backpressure. The GT30 fails miserably there.

Going to the twinscroll housing in a big A/R can greatly reduce reversion and helps a lot, but going up to the GT3576R is good for like 50HP peak on 93 octane.

The GT30 shines when you burry the boost guage on high octane fuel and run along the compressor speed limit as soon as the turbo spools. Then it will make lots of torque and decent HP.

 

You're correct, this turbo is proven to make 600whp on boost numbers in the low 30psi range. The cams are definitely killing power. Some kelford 272's or GSC S2's would probably make 40 more whp.

Also no boost control is definitely giving sub-par spool.

The GTX3576 is a 3076 GTX compressor paired with a 35R turbine.

 

Not sure if you guys are accounting for this, but OP has a stock frame GTX3576, so that housing I'm sure is limiting the potential of the turbo somewhat.

I know for the Evo X that the stock frame GTX3576r is not assembled by Garrett like the stock frame 30Rs are either.

 

I completely read this thread as an ATP GTX3076R...

That ATP EVO housing seems to really be a turd (no surprise).

Probably the same applies though, keep cranking the boost with good fuel and it will eventually start making power.