GTM Performance Engineering: MHI Twin Turbo Official Release

Mike@GTM

We'll be posting 16g Mustang dyno results once we finish up Nixlimited's car.

The graph we posted had the horsepower and torque scales set to 500 and 450 respectively. We have a different graph without boost that displays both horsepower and torque scales (the Mustang software only displays two scale channels at a time) that we'll be uploading here shortly.

Nixlimited

You guys are going to get to show off much more than just the 16gs!

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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)

Chemy

OK I cant take it anymore, im on the list!

Only question I have for anyone with experience, my 12" Nismo is my DD usually. Just looking for fun on the road and not really the track or drag (maybe occaisonally). I am leaning towards the 16g kit for the quick sppol times. If I do not plan to build any further, does an 18g make any sense?

What are you folks planning when/if you get this kit?

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2012 Nismo, PW #512. FI CBE SS w/12" Res, Stillen g3's, UpRev, Kenwood 9990HD, Focal speakers and tweeters, Wicked Cas corner box with JL 10" w6, 35% ceramic tint, full clear bra.

indyn

base map (not cable and license) available for tuner kits?

when will the production start?

Mike@GTM

For a track car, heat is the biggest concern. There are a number of ways you can attack the problem. Things like a vented hood, upgraded fans, using Uprev to lower the temperature the fans come on at, upgraded radiator. Those are the "off the shelf" options. Of course, there are a variety of other things you can do depending on how creative or resourceful you are.

Before you start getting crazy with the cooling mods though, it would be a good idea to get a firm grip on where you are now with your coolant and oil temps. While gauges can go a long way to helping you determine that, you want to be focused on your driving as opposed to your gauges. Therefore, it would be ideal to have data logging capability so you can go over the logs while you're in the paddock after your session to see your peak temps.

Just remember that different tracks will have different demands on the car and the driver. Some tracks are going to push your cooling system hard while others are going to shred your tires instead. You need to setup your car for what you are trying to do, the track you are driving on and the conditions you are driving in.

As always, powder coated intercooler pipes and thermal dispersant coating on the intercooler are optional.

As for specifying different blow off valves or other components, keep in mind that the intent of this kit is to have it on the shelf and ready to ship. While we can certainly accommodate custom orders, it will add to the lead time.

Thank you.

The need to change turbos depends on which setup you start out with. If you go with the 18g's, you won't need to change turbos for more power. The dyno graph on the Mustang dyno was with the 18g's on the stock engine and 91 octane gas.

Yes, we can send you a base map to get you going if you get the tuner kit.

As for production, we are still ironing out some details on production time. Once we have the information on when these kits will be available, we will announce it.

indyn

thanks Mike. Can we expect an April production start date? and a noob question, what is the power difference between external and internal wastegate kits? which one is good for emissions levels similar to factory?

SPOHN

I just made a money transfer for this kit to the side. I'm just going to hold out this track season while NA. Plans are to build motor possible. See what happens.

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Nism0370

What are the road course track use implications of this kit or with any tt application.. i.e. what else must be considered with the extra heat, fuel use, etc.? I have a 25 row oil cooler and phunk's accessory 255lph walbro fuel pump. just trying to gauge total cost of parts needed.

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2011 Nismo-Swift springs, Stillen G3, F.I. LTH and CBE, SS lines, Motul 600, Carbotech pads, Setrab 25R oil cooler, Uprev Tune 323 whp
2009 GT-R Gun Metal Grey-AAM GT650-R 540awhp

SPOHN

I plan to run the 16G with only about 425whp. Just to get that edge. I have a 34R cooler. I'll add another on top of the GTM high capacity oil pan. Bigger radiator/ fans. Turbo blankets. Maybe some more ducting. I've been talking to two guys that are not on this forum who have been tracking with the Greddy 20G kit well over 500whp. So they informed me of how it's very possible to keep temps down on smaller kits.

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BlkNismo

I may have overlooked, will stealth black be standard or optional?

Is it possible to have hks ssqv bov opposed to tial or turbosmart?

SS_Firehawk

Maybe two 25 rows and an upgraded's radiator. GTM's upgraded radiator and SPAL fan kit, though expensive is the best I've seen for the platform. I would look at something like that

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future370zzz

^it is an option and cost about $500 if you wanna do everything, ic thermal coat and piping powder coated

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mikey1600

so fkn excited about this! haha

LukasC

This is an awesome price! I have the money available to buy this if the group buy goes down and definitely could finance it! One concern though is if these turbos will need to be changed later if i want to make over 550whp? Also that 11psi at just under 500whp on the mustang dyno is that on a stock block? Pm im very interested

edub370

I garuntee those 20g's will make well over 600whp. stock engine car IIRC. if u are looking for a crazy build down the road, then the garret based gtm kit may be a better starting point for you. but IMO, this kit will be the best kit u can buy for a stock block car. quicker spool, and turbos that have proven themselves reliable for over a decade.

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