My GTM Supercharger Review

Z eliminator

How much boost are you running? What was the base line before the SC?

__________________
12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

Buddy Revell

I'm running the normal pulley for about 8 lbs. of boost (I don't have a boost gauge to give you the exact number). It dynoed at around 278, but my baseline was w/ a few different mods (motordyne xyz pipe, HFCs) that I ended up taking off my car and selling.

__________________
'08 IP G37S/GTM Supercharger/20" DPE SP-5 Wheels/ARK GRIP Exhaust

weiboy718

I'm really curious cuz the video are showing close to 8psi of boost at about 6k-6.5k

I was thinking that maybe you have a smaller pulley. I like it that way better rather than always redlining just to reach 8psi of boost

SAM@GTM

No it is the same pulley as before, The car was making 8 psi on the dyno and it made little a little more on the road. also the boost did not change wither we had test pipes or factory cats. although i did tighten the bypass valve as much as possible to give the car a better boost response and maybe that 's what did it .

And yes you are correct the beauty about this set up is that you don't have to red line the car to get all the performance out of it.

Sam

weiboy718

Nice!

Dembflyr

Did you remove the cats for performance purposes?
I am starting to save for the stage II kit and I love the way my car sounds with HFC's. I'd hate to lose them but if the supercharger kits perform better with the stock cats then I'd just have to deal.

__________________
2012 G37S Sedan 6MT - Project Practicality

2009-6MT-Sport/Touring-Dembflyr's Journal-TT Build Thread-CAR IS SOLD

SAM@GTM

I'm posting a supercharged 370Z Nismo shortly with HFC that made 420 rwhp and 350 rwtq on 91 octane . So the system is working well with both setups, The only problem with after market HFC is that they wont survive an FI system for more the six month .

Sam

Dembflyr

I see. So test pipes it is then.

I saw that video of the SC Nismo. That sounds SICK!! I love it.

__________________
2012 G37S Sedan 6MT - Project Practicality

2009-6MT-Sport/Touring-Dembflyr's Journal-TT Build Thread-CAR IS SOLD

G37sHKS

Poor Cats

Staples

Sam what are your thoughts on resonated test pipes? Will they eventually blow out the packaging because of the increased hot exhaust gasses? I've had mine on my car for about a year now without any issues with exhaust mods.

__________________
'08 Infiniti G37s - Forced Induction Fed

SAM@GTM

No problem there, might get louder with time but that will be the worse of it.

Sam

Buddy Revell

I removed the HFCs for money and sound reasons. Wanted some extra cash and I wanted to quiet down my car. I used to have a full Fast Intentions setup: HFCs and cat-back exhaust. But I sold all those pieces to go with the more conservative y-pipe back GReddy exhaust. I may go back to a full catback sometime in the future, but I'd want to look for the quietest catback exhaust I could find. Also, Sam said that HFCs wouldn't last too long w/ forced induction.

__________________
'08 IP G37S/GTM Supercharger/20" DPE SP-5 Wheels/ARK GRIP Exhaust

SAM@GTM

Will post the dyno graph's shortly .

Sam