Nissan 370Z Forum - View Single Post - dmhenderson's Nismo '12 GTM supercharged build thread where I freak out a lot

dmhenderson · 11-17-2013, 12:49 AM

Car is tuned. We stopped it at 495.4whp. Frank (Hill's Garage) said it has another 20-30whp in it but doesn't want to mess with timing any further especially with cold weather coming up - add to that the fact that I asked him not to take it over 500whp.

Frank's exact quote was "she wants more but I don't want to give it to her".

Things we have learned from this build:

-Pulley size is everything. You will get a max of 450-460whp on the 92mm pulley (very likely less than that). The 88mm pulley will take you up to 550whp depending on supporting mods.

-Cats (or lack thereof) do not matter or at least make *very* little difference. We have a guy in MAZOC who runs cats on a similar GTM kit for 20k miles and they haven't melted/fallen apart. I am not running cats and can easily make the same power without the added backpressure. This is a fact backed up by the opinion guy who is widely respected as an expert on these cars - and proven out during the tuning process. I apologize in advance if you don't agree with me but this has been my experience. Let's leave it at that.

-GTM can be challenging to deal with as a customer but the product is solid and the kit quality is good. Fitment issues are definitely a thing and if you have anything that isn't stock under the hood, you should probably check with Mike/Sam and your installer to see if you're going to have problems before you commit.

I am not interested in high score pissing contests or keeping my build secret. Hopefully this thread will be helpful in the future. Please feel free to PM me if you have questions.

~FIN~

11-17-2013, 12:49 AM	#432 (permalink)
dmhenderson A True Z Fanatic Join Date: Feb 2011 Location: Maryland Posts: 5,930 Drives: AWD TT 370z Rep Power: 26	Car is tuned. We stopped it at 495.4whp. Frank (Hill's Garage) said it has another 20-30whp in it but doesn't want to mess with timing any further especially with cold weather coming up - add to that the fact that I asked him not to take it over 500whp. Frank's exact quote was "she wants more but I don't want to give it to her". Things we have learned from this build: -Pulley size is everything. You will get a max of 450-460whp on the 92mm pulley (very likely less than that). The 88mm pulley will take you up to 550whp depending on supporting mods. -Cats (or lack thereof) do not matter or at least make very little difference. We have a guy in MAZOC who runs cats on a similar GTM kit for 20k miles and they haven't melted/fallen apart. I am not running cats and can easily make the same power without the added backpressure. This is a fact backed up by the opinion guy who is widely respected as an expert on these cars - and proven out during the tuning process. I apologize in advance if you don't agree with me but this has been my experience. Let's leave it at that. -GTM can be challenging to deal with as a customer but the product is solid and the kit quality is good. Fitment issues are definitely a thing and if you have anything that isn't stock under the hood, you should probably check with Mike/Sam and your installer to see if you're going to have problems before you commit. I am not interested in high score pissing contests or keeping my build secret. Hopefully this thread will be helpful in the future. Please feel free to PM me if you have questions. ~FIN~ __________________ Last edited by dmhenderson; 11-17-2013 at 10:16 AM.