What are you putting down with the m660 turbos and 91 octane?

Curious to see the gains with the m660 over the GTS turbos.

No e85 around here

 

The M660s make low 600s on 91/93 which is what the GTS turbos do on ethanol with a couple supporting mods. The M600s make 700 whp on ethanol.

 

Honestly, the more I read and think about it, the more I think the GTS turbos are really the sweet spot for these cars, 500WHP for DD, drop in E85 and IC and youre @ 650WHP.

How did you like your stage1 w/ IC set up?

 

I hope you guys are right about a software kit to support hybrid turbos from APR. I have E85 accessible (Austin, TX), and I’m a 15 minute drive to Cobb tuning, Boost Logic, etc. so have local options.

But the more I think about it, a FBO GTS kit on E85 will make what a hybrid turbo makes on pump gas. It’s a hell of a value, you really get bang for your buck with the OEM setup.

 

GTS turbos on ethanol are 615 whp roughly. 550-560 whp is right about where mine is as I have the intake pipes too. The car is smooth as glass, fast, and fun. It pulls HARD especially from 5000-7500 for minimal mods on 93 octane. I’ve run a 6.9 60-130 with traction issues which is what a 992 turbo S runs. Traction is an issue as you crest 550 whp. Tires will matter a lot more. I’m on the Pzeros for a bit longer and they are decent once you get some heat in them and the temps are 75+ F. Under that with cold tires, it’s very interesting up to 60-70 mph with traction control off

Thankfully with the APR calibration, regular mode is less power than sport/+ but still more than stock. This allows for better traction when conditions aren’t ideal.

 

Yeah P zeros are super sketchy when cold. Anything under 60degrees and the car is extremely adventurous. Those are healthy numbers, is your car a MT or PDK. Your 60-130 are great. If you are PDK and go with a M/T SS /NT01-05 hell even a MPS4's youll see close to mid 6 seconds.

 

I tried to order m660s last week and my mechanic talked me out of it. He just installed a set and its running dynospectrum tune (as recommended by boostaddict). Truly its only 280ish dollars difference between the kits (including tune), but I opted to stick with apr's safe 640hp kit. We did gts turbos, ams intercoolers, tial intakes and elbow. Should be plenty for a street car.

 

Which "elbow" did you go with-are you speaking of the Tial "T pipe" replacement, or are these the elusive turbo intake elbows that connect the turbos to the Tial inlets?

 

Where is everyone getting the figures where you can get 600whp on m660 turbos and supporting mods on 91. I'm low 500whp with m660 and every supporting mod possible. 91 is trash octane but thats all I can get in my area.

 

Should be able to pull a bit more than that...I am assuming you are on Cobb-protuned?

 

yes cobb pro tuned by a very reputable indy porsche shop in my area. baseline was 300whp

 

https://rennlist.com/forums/991/1220...nd-30-mpg.html
3DMetal has the m660's with a 91oct APR tune, hopefully they'll release that tune.
He has posted a 6.56sec 60-130, on 91 at 61deg here in socal. That is a full second faster than my best on 91, GTS turbos (7.57@46deg). My Pro-tune dynoed at 542whp. I would be surprised if he he less than 600whp.

 

I posted in that thread. You should see 3dMetal's response to it.. never dyno'd.

 

@911Pat my guess is the dyno they are using reads lower than others. It’s probably a Mustang dyno where others dyno with Dynojets. The delta is real between your baseline and protuned (200+whp or 2/3 more than what you came in with). I bet if you threw it on a rwd dynojet you would see higher numbers.

 

What are you 1/4 mile traps?
60-130 times?

As mentioned, you picked up 200 rwhp on 91 octane. Not too shabby.