GTM Performance Engineering: Stage 2 Twin Turbo V2 w/GTX Turbos - CARB app submitted

Vince@R/T

Have you guys test fitted one yet? I would confirm fitment before selling them as replacements. I am running GTX2863 on our HR motor with your manifolds and I had to modify the left side motor mount bracket pretty decently to get the front compressor housing to clear. I am however using T25 Plus vband exhaust housings, not the internally gated 5 bolts so it might change the location slightly.

Supergoji

what about EFR turbos??

Seb@SZ

EFR's are much bigger externally speaking so it would require custom exhaust manifolds.

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Ron

Yeah confirmation that it will clear the mounts and that existing pipes will bolt on to them would be nice..

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GTM Performance Engineering 370Z SUPERCHARGER KIT PRESS RELEASE
post 1110

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Nixlimited

Awesome. Man, if both kits got CARB approval, I would have no idea what to do. So much more power with the twins, but I really enjoyed the drivability of the SC...

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VQStryker

twins are always better

Nixlimited

Wait, I was just thinking, where are the cats going to be on this setup? Post-turbo and aftermarket? Is CARB known for approving kits with aftermarket cats?

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Reality

How many (previous) GTM kits have received CARB, approval?

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TheJumpOff

Do you guys have specific's on what else has changed from your existing TT kit to the CARB legal kit that is in development other than the turbo being used?

For those of us who have your first TT kit, would swapping just the turbo make our kits CARB legal now? Basically, what else is needed to make the non CARB legal kits CARB legal? Very interested in this.

Nixlimited

Somehow they are going to have to work cats back in. The tough part--I suspect--will be getting an approved cat with the kit that will last.

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Car Sold! Pleasure being a part of the Z community.
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

MMC Racing

Exciting news. I'll check back in 2013.

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Mike@GTM

Hmmm...well, we fit a pair of GT35R's without modifying the engine mounts on either the HR or VHR and the 35R is a much bigger turbo altogether. Granted we have our own custom turbine housing, but the 35r's compressor housing is way bigger than the GT28's. What part of the compressor housing was interfering on your project? Did you clock the turbo before trying to fit it?

After going back and forth with a Garrett engineer, he assured me that the external dimensions of the GTX2863R compressor housing isn't any different than the regular GT2860RS. Given that information, it would be pretty safe to say that it would fit, which is why I am asking about the clocking of the turbo on your project.

Our Turn-Key turbo kit uses an adapter to go between the turbine outlet and the stock cat as it always has. Nothing needs to change there.

There's a couple other minor changes that will probably need to be made. We'll make the necessary changes as we go along. I'll have to look into the possibility of a "CARB conversion kit". Just bear in mind that we're at their mercy to some degree.

darli328

Sorry if I'm bringing this back from the dead. Anyone hear anything on this?

SAM@GTM

We have not received the test letter for the application yet. Once we do will proceed to the next step. The delay in getting the test letter worked out to our advantage sense we have learned so much in the last six month dealing with our supercharger kit approval process . The supercharger kit car is going in for testing next week, if every thing goes according to plan we'll move our focus to our TT application .

Sam