Wait, whats so wrong about this turbo then? I am confused from the back and forth in this thread

http://www.atpturbo.com/mm5/merchant...gory_Code=VEVO

 

test it and let us know how it works because still to date i havent seen any exciting results..

 

LOL, maximum bbq sauce, I LOVE IT

Yea the 66 lb/min I saw was close to 9k rpms with 100% wgdc and 22 degrees of timing.

 

I'm holding off for some REAL BW EFR results before I buy into anything...but thats the turbo I have been eying. Apparently the first batch of gt30r/35r turbos had problems from ATP some time ago...I would think they would have been sorted out by now but it still is untested waters.

It seems that they have given it the exhaust housing size that it needs as well.

I live in Utah, and haven't had to worry about any sort of visual inspection--as long as they plug in the OBD2 port and it checks out I'm okay. My point being, to maximize this turbo I think you really need some cam/tubular manifold combination, and if your going to do that you might as well go T3 or Tial or even some sort of divided setup if your so inclined, so then the bolt on factory replacement is kind of pointless to me unless you really don't want to replace your whole turbo system at once and want a seamless upgrade path.

You should buy one and test it out and change my mind

edit: The link you gave is the one I have been eying ... Although I'm interested in the EFR's

 

Garrett and Borg Warner don't really 'rate' like FP, etc do. They have actual compressor maps. What the engine can actually make the compressor do depends on the turbine side, etc.

 

The dyno from RRE on E85 with the regular GT3076 looked pretty good to me. I figure the GTX3076 is good for another 40-50whp.

 

I have pumped every single FP turbo past their rated lbs per min based on 10hp per lb standard.. On pump gas NONE of them will reach their full efficiency of course.. Billet turbos flow at high pressures..

 

It's good for an approximation, but not even close to being accurate. A few degrees of timing can significantly affect the power output given the exact same airflow. You know this. We're talking +/- 10%, maybe even more. BSFC changes alot across the rev range and boost pressures changing the power output per airflow.

And then if we try to back out a crank horsepower number from a dyno, throw in another +/- 10% depending on the dyno, correction factor, alignment on the car, etc.

Since Evos have MAFs, just get the mass flow rate vs. MAF hz/voltage on a proper lab type flow bench. Then you'll know exacty how much air flow you're getting. Of course, the MAF has to stay in the same housing and diameter piping.

 

this is on the older dyno dynamics software , it can't do inline boost, AFR, EGTs
turbo is GTX3076R ATP bolt on , using a divorced downpipe . Tial 44 with a synapse blowoff valve, 1260 injectors , 65% duty cycle, 4inch intake, NO maf - load based , AEM EMS ,GM 3port , fuel MS109 , AFR 10.5 - 11 track. 11.5 on dyno
the sheet is for 20PSI and 24PSI. We stopped at 24PSI , given it's a stock bottom end, did not feel like pushing it too far.
Stock X reads 225 on this dyno, scale is slightly off on the RPM, but it gives people a general idea what the turbo is capable of. For what it's worth a EVO X with a ETS 35R setup made 1 more whp on the same dyno at the same PSI, the turbo is a legit 65/lb m
Tuner was Mitch Pederson from MP Tuning

 

The funny thing is that ATP said their gtx3076 is good to 600+hp...

 

they meant crank hp, not too far off i suppose. I'd still buy a black though

 

well it prob is , i'm only running 24psi , according to the compressor map it should be good to 28-30 . If you go by my dynograph (not dynojet btw ) , add another 4 psi and it's over 500whp easily. 500whp on an awd car is easily over 600 crank .... Infact if you compare what a stock car dyno's on that dyno' calc drivetrain loss ... then it's over 600 now . My guess is between this and the black peak #'s will be very close, the garrett is prob more efficient tho. But then again lots of people have blown up the first batches of GTX's released.

 

What about the atp gtx3582? That still not as good as a black? All these choices, its hard to choose where to head...

 

the gtx35r will kill a black if you can set it up with a big enough powerband, they are not even in the same ballpark lb/m compressor maps . The black is very comparable to the gtx30R tho 65 vs 68 lb/m , ( not the old 30r w 55 lb/m i believe) . My guess is the garett is always going to be more efficient tho compared to the FP's for lb/m vs lb /m comparisions, not having the stock housing to deal with and the garetts are ball bearing. But with any of the 3 turbo's your comparing .. 4 inch intake is a must

keep in mind , i have no care about street. My car is setup for 100% track usage.

I think the new BW vs the new garett's are going to be an interesting comparison tho. I have a feeling you will see a 570-600whp ( roller dyno) car running a gtx30R just from what' ive see out of this one i have of course there's always going to be the pie in the sky dynojet #'s .. But in the end for me it's the power band and who pulls on the straights. One thing that did impresse me of the turbo is it's not getting heat soaked, pull after pull ( no cool cycle) it was putting up the same numbers, although it's only running @24psi

 

where to even find a 4" stock turbo location intake for the X?