GTM Stage 1.5 supercharger build

elperuano

Settle it on the streets! Finally some action going on around here!

Mkai0

Haha, yes.. lol.

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Eibach, Tanabe, Blitz, Vertini, GTM stage 1.5 SC, Aquamist, Invidia, Alto built 5AT, Edge Racing, Racelogic, GTM driveshaft, 440 whp in 101F TX heat..

Baer383

Naaaaa

I'll leave it on Z1's dyno maybe during Z nationals.

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2013 ZL1

754 rwhp 747 rwtq

Mkai0

What kind of cats were you using when using when you did this 11lb run? Note my compliment from a year ago for how well your old car did as an auto.

GTM Supercharger Stage 1.5 - YouTube

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Eibach, Tanabe, Blitz, Vertini, GTM stage 1.5 SC, Aquamist, Invidia, Alto built 5AT, Edge Racing, Racelogic, GTM driveshaft, 440 whp in 101F TX heat..

Baer383

The old car had stock cats and it ran well and I got a lot of experience tuning on it and applied what I learned to my Nismo.

I have stock cats on it the Nismo,after I made the 516 I called Sam and told him he said he wasn't surprised ,he said once you find the tune the car likes numbers like that will so up.

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2013 ZL1

754 rwhp 747 rwtq

fryzia23

Right now Im seeing 10lbs max boost on 88mm pulley 93 Octane since I installed stage1.5 s/c kit. This thread makes me wonder whether to switch to cats or leave the test pipes on before I get the car tuned in 3 weeks.

I might switch back to hfcs that I still have and see if theres any difference.

Baer, do you think I would see more boost with hfc/cats?

Baer383

You will burn out HFC before stock cats,and Sam told me to use the cats so I did and still have no problems so far.

I am running the 88mm pulley seeing 11-12 lb's depending on temp outside.

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2013 ZL1

754 rwhp 747 rwtq

fryzia23

Yeah I'm aware of the HFCs not lasting long. I'm going to install them temporary just to see if any difference. If I see more boost with HFCs then deffinitely will pick up factory cats.

If you get 11-12 lbs of boost with 92mm pulley then I should be getting more than 10lbs with 88mm.

Baer383

I tried to buy the 84mm pulley from Sam but he won't sell it to me.

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2013 ZL1

754 rwhp 747 rwtq

fryzia23

Do you get 93octane?

Baer383

93 octane most all the time, 110 octane when I can find it to mix with the 93.

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2013 ZL1

754 rwhp 747 rwtq

fryzia23

That's weird. They told me as long I get 93 it will be fine with 88mm

Baer383

I don't know either so I just dropped the subject with Sam.

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2013 ZL1

754 rwhp 747 rwtq

snowsurfdirtx

I've got 92 octane here with up to 10% ethanol :/ hopefully I wont need meth on the 92mm pulley. We shall see. Order goes in next Friday when I get paid.. 4 weeks lead time. my FI exhaust should be here then. I'll dyno with both ART pipes and stock cats just to see what the difference is. I'm gonna have a 96mm pulley on for now. Next spring, I'll throw the 92mm on and dyno again. I'm getting a baseline done tomorrow. I have post maf tubes and k&n drop ins, plus the art pipes installed on a stock tune. I'll post results as soon as I can. All in all, 516whp is insane. I'd be MORE than happy with 490whp and no meth.

on a side note.. that dyno graph goes to 7800 rpm. O_o

Baer383

You can get 490 without meth but you will have to use the 92mm pulley,and the 7800 rpm is alittle high plus making 514.8 on 8 psi I think they have a very generous dyno.
The 96mm pulley will only get you about 440-450

__________________
2013 ZL1

754 rwhp 747 rwtq