GTM Performance Engineering: MHI Twin Turbo Official Release

showme99

I stopped by GTM today to get a tour of their facility and find out more about their new MHI turbo kit. Sam showed me the equipment they use for the in-house fabrication all of their various parts. He also popped the hood on their demo car (the 370z with the 18g kit installed on it) so that I could see the kit up close. He answered all the questions that I had regarding the MHI kit.

Sam then offered me a ride in the demo car. All I can say is...wow! That car is a beast! It drives just like a normal car at low rpms, but when you really get on the gas, it's a whole different story. The car slams you back into your seat and just takes off. Don't get me wrong; the car was never rough or jerky. Even though the kit throws you back into your seat, the power delivery is still very smooth and precise. I was also surprised by the responsiveness of this kit. There was very little, if any, turbo lag. Needless to say, I was thoroughly impressed.

Thank you Sam and Mike for taking time out of your day to answer my questions and showcase your new turbo kit. I'm excited to be on the Group Buy and I'm definitely looking forward to having one of these kits installed on my car.

Dzel

What was the level of difficulty to install the kit from what you saw?

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showme99

Since I wasn't there for the install, I really can't comment on how difficult it was. I've never installed a turbo kit and I don't plan to start now; I'll let GTM handle my install. I know that GTM has posted a copy of the install instructions for their Garrett kit earlier on (either in this thread or the group buy thread). Even though it is for one of their earlier kits, it should give you a rough idea of what is entailed for a turbo install. Just bear in mind that unlike the Garrett kit, the MHI kit doesn't require drilling/tapping into the engine block since it provides a pre-tapped oil pan spacer.

As far as what I saw, once the car has been put back together post-install, many of the kit's components are hidden from view. All you really see are portions of the piping. If you opted for the black powdercoated piping, this would be a pretty stealthy install. To get an idea of where some of the components are mounted, check out the pictures that GTM posted at the beginning of both this thread and the "TD05 16g test results" thread.