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-   -   GTM Performance Engineering: GTM TD05 16G Test Results 91 Octane 7AT (http://www.the370z.com/forced-induction/56844-gtm-performance-engineering-gtm-td05-16g-test-results-91-octane-7at.html)

gbrettin 06-28-2012 05:38 PM

Quote:

Originally Posted by Mike@GTM (Post 1796714)
The HKS EVC 6 electronic boost controller can be programmed for per gear boost. That said, you can't run boost any lower than wastegate spring pressure. Most of our kits ship with 6psi springs, so that would be as low as you could go.

Also, I don't know if you knew this or not, but your right foot also functions as a manual boost controller that can change boost pressure on the fly. ;)

I was born with a tragic birth defect on my right foot: PB distum pedis. also known as... Lead Foot.

:p

XwChriswX 06-28-2012 11:48 PM

Quote:

Originally Posted by Mike@GTM (Post 1796184)
In the grand scheme of things, it would be ideal to do both the Twin Turbo and Transmission at the same time. Ultimately, it would save on transport costs and doing it all in one shot would allow you to truly enjoy the car from the get go.

In regards to the second half of your question, I personally feel like it's a really tough pill to swallow doing the transmission first and then doing the TT later as the performance gains from just a transmission build aren't exciting enough on their own to justify the cost. If it were me, I'd do the Twin Turbo, transmission cooler and tune to increase line pressure first, drive the car and enjoy it (within reason) while saving up for the transmission build.

Again, it's not truly necessary to build the transmission to have fun and enjoy the car. For example, I know that the transmission in my Subaru is made of glass and is ultimately a ticking time bomb...that didn't stop me from upgrading my turbo within reason and enjoying my car for what it is. I just take care of it and don't beat it like a drum...simple as that. I still track it occasionally and stomp on the go pedal when I feel like it, I just don't abuse it and change the fluid regularly. One other tidbit is that I do not take it to the drag strip because I know that all it takes is one bad launch to grenade that box into a trail of shrapnel. Know the limitations of your hardware and drive accordingly.

The bottom line is that if you are adamant about doubling your power and want to thrash the ever living $#!^ out of your car, then yeah, you ought to build the transmission to take the abuse.

Thanks for the response Mike. That does make a lot of sense. :tiphat:

I don't plan on thrashing my car any more than what you're doing in your subie until I have another car as a DD so if something happens to the Z I'm not transportation-less.

Are the upgrades that are done to the 7AT in conjunction with the TT build things that are again improved even more with the AT build, or is this a separate solution to the increased power?

Quote:

Originally Posted by W.O.W. 370Z (Post 1796386)

:inoutroflpuke: :bowrofl: :tup:

ZtoG37 06-29-2012 11:12 AM

whats the release date of your kit??

sloboi 07-07-2012 12:56 AM

Where is the intake situated?

SAM@GTM 07-07-2012 02:20 AM

Quote:

Originally Posted by sloboi (Post 1810232)
Where is the intake situated?


sloboi 07-07-2012 03:56 AM

Awesomecakes. Looking forward to getting this on my car!

Scribe 07-18-2012 11:29 AM

I'm super excited to see such a well matched kit for the stock VQ37 and happy that GTM didn't nerf the results in order to prevent cannibalization of their larger turbo kit. I was also concerned by the idea of cutting costs, but GTM have shown they don't cut corners and it is encouraging to see the results.

Some smaller turbo or supercharger kits exclude blowoff valves. Running 10 psi I'm happy to see they are present. But that leads me to ask about running 10 psi on the stock rods, especially on 91 which detonates almost as soon as you put it in your gas tank.

Some people seem to be finding the upper limit of these rods to be around 550whp and I would have concerns about longevity. Are there any concerns from you guys at GTM? I live the in the land of 93, and probably wouldn't want to run more than 9 psi, but could see an issue where people tune their cars to run 11-12 psi on 93 octane and then throw a rod through the side of their block.

FPenvy 07-18-2012 11:39 AM

Quote:

Originally Posted by Scribe (Post 1826361)
I'm super excited to see such a well matched kit for the stock VQ37 and happy that GTM didn't nerf the results in order to prevent cannibalization of their larger turbo kit. I was also concerned by the idea of cutting costs, but GTM have shown they don't cut corners and it is encouraging to see the results.

Some smaller turbo or supercharger kits exclude blowoff valves. Running 10 psi I'm happy to see they are present. But that leads me to ask about running 10 psi on the stock rods, especially on 91 which detonates almost as soon as you put it in your gas tank.

Some people seem to be finding the upper limit of these rods to be around 550whp and I would have concerns about longevity. Are there any concerns from you guys at GTM? I live the in the land of 93, and probably wouldn't want to run more than 9 psi, but could see an issue where people tune their cars to run 11-12 psi on 93 octane and then throw a rod through the side of their block.

I'm interested in this too since I only have ran 93 octane through my car and plan on continuing to do that after I would do a TT kit

KaienZ34 07-18-2012 11:40 AM

Yeah there is nothing but 89 and 93 here.

Scribe 07-18-2012 01:15 PM

Quote:

Originally Posted by FPenvy (Post 1826374)
I'm interested in this too since I only have ran 93 octane through my car and plan on continuing to do that after I would do a TT kit

My comment below isn't directed at you specifically, but is more of a generalization.

Running 93 won't be an issue as long as you are willing to keep the boost down to safe levels. The advantage you will see with 93 octane is a safer margin against detonation which is well worth losing a few inches in the pissing contest of dyno numbers. Just because you can turn the boost way up doesn't mean it makes sense. That's why I dislike the larger turbo kits for an unmodified VQ37. I don't need a huge turbo since I can't push more than 550whp anyway. I'll take the quicker spool all day over bragging rights about how much power two giant turbos could make.

Now if you are looking to future-proof your build, buying the larger kit may make sense. I would still argue there's tons of usable power left on the table with these turbos if you threw in beefier rods and lowered the compression.

FPenvy 07-18-2012 01:26 PM

Quote:

Originally Posted by Scribe (Post 1826638)
My comment below isn't directed at you specifically, but is more of a generalization.

Running 93 won't be an issue as long as you are willing to keep the boost down to safe levels. The advantage you will see with 93 octane is a safer margin against detonation which is well worth losing a few inches in the pissing contest of dyno numbers. Just because you can turn the boost way up doesn't mean it makes sense. That's why I dislike the larger turbo kits for an unmodified VQ37. I don't need a huge turbo since I can't push more than 550whp anyway. I'll take the quicker spool all day over bragging rights about how much power two giant turbos could make.

Now if you are looking to future-proof your build, buying the larger kit may make sense. I would still argue there's tons of usable power left on the table with these turbos if you threw in beefier rods and lowered the compression.

lots of good info :tup: i agree with what youre saying. the main problem i'm running into right now is not only comin up with the money for the TT kit but also the transmission upgrades since i would really like to be able to have a fully functioning car rather than losing the higher gears just for high HP numbers lol

this new kit is amazing though. lots of power in a small package.

Scribe 07-18-2012 01:35 PM

Quote:

Originally Posted by FPenvy (Post 1826658)
lots of good info :tup: i agree with what youre saying. the main problem i'm running into right now is not only comin up with the money for the TT kit but also the transmission upgrades since i would really like to be able to have a fully functioning car rather than losing the higher gears just for high HP numbers lol

this new kit is amazing though. lots of power in a small package.

Don't forget to factor in a very nice boost controller. Speaking of which, I don't remember seeing anything about whether this car had one or not. I'd be interested to see both the boost and afr overlays for the dyno pulls.

I know that turbos work off of the pressure differential between the exhaust manifold and exhaust and that the best exhaust for a turbo is no exhaust. Still I would like to see what high flow cats and a straight-through style exhaust can achieve.

I also am curious if there is a divider within the down-pipe to keep some separate of the exhaust from the internal wastegate.

FPenvy 07-18-2012 01:42 PM

Quote:

Originally Posted by Scribe (Post 1826667)
Don't forget to factor in a very nice boost controller. Speaking of which, I don't remember seeing anything about whether this car had one or not. I'd be interested to see both the boost and afr overlays for the dyno pulls.

I know that turbos work off of the pressure differential between the exhaust manifold and exhaust and that the best exhaust for a turbo is no exhaust. Still I would like to see what high flow cats and a straight-through style exhaust can achieve.

I also am curious if there is a divider within the down-pipe to keep some separate of the exhaust from the internal wastegate.

all questions someone from GTM will have to answer but i'm interesting in for all those answers too.

personally i wouldnt mind running no exhaust since the turbos are kinda mufflers already. then again i just like very loud and mean sounding exhaust on cars hence my non-res set-up which still isnt as loud as i'd like.

XwChriswX 07-20-2012 01:23 AM

Will you see a performance loss from using the 2 coolers and the crash bar blocking them vs one single cooler without the crashbar as in the previous kit? Although I do really like the idea of retaining the crash bar for safety purposes.

KaienZ34 07-20-2012 07:59 AM

Quote:

Originally Posted by XwChriswX (Post 1829168)
Will you see a performance loss from using the 2 coolers and the crash bar blocking them vs one single cooler without the crashbar as in the previous kit? Although I do really like the idea of retaining the crash bar for safety purposes.


:iagree: Plus keeping the tow hook.


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