My GTM Supercharger Review

Dembflyr · 12-24-2010, 12:47 PM

Quote:

Originally Posted by 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.

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.

SAM@GTM · 12-24-2010, 01:10 PM

Quote:

Originally Posted by 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

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

SAM@GTM · 12-24-2010, 01:15 PM

Quote:

Originally Posted by Z eliminator

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

Will post the dyno graph's shortly .

Sam

SAM@GTM · 12-24-2010, 01:19 PM

Quote:

Originally Posted by 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.

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

Q8y_drifter · 12-24-2010, 01:35 PM

Sam did you get my email about the sedan SC kit?

Dembflyr · 12-24-2010, 02:18 PM

Quote:

Originally Posted by SAM@GTM

I 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

I see. So test pipes it is then.

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

Zat_Zuma · 12-24-2010, 02:39 PM

Nice work Sam ...... me likey

weiboy718 · 12-24-2010, 03:21 PM

Quote:

Originally Posted by 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

Nice!

G37sHKS · 12-24-2010, 03:57 PM

Quote:

Originally Posted by 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

Poor Cats

weiboy718 · 12-24-2010, 08:30 PM

Merry Christmas to everyone and longlive to GTM!

djpathfinder · 12-24-2010, 09:24 PM

You must love your car that much more , OP. Nicely done Sam! Thanks for posting the videos. How long did the install and tuning take?

Staples · 12-24-2010, 10:09 PM

Quote:

Originally Posted by 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

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.

Buddy Revell · 12-26-2010, 01:33 PM

Quote:

Originally Posted by 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.

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.

Mkai0 · 12-26-2010, 04:37 PM

Just curious why would aftermarket HFC's not last long when going FI? I have a set of Fast Intention HFC's, and I would sure hate to get rid of them because of boost.

SAM@GTM · 12-26-2010, 06:46 PM

Quote:

Originally Posted by Mkai0

Just curious why would aftermarket HFC's not last long when going FI? I have a set of Fast Intention HFC's, and I would sure hate to get rid of them because of boost.

Because HFC were never intended for FI use, not strong enough to take the heat of the EGT on an FI car. On average it will take 3 to 5 months before they melt down .

Sam

12-24-2010, 01:35 PM	#20 (permalink)
Q8y_drifter Enthusiast Member Join Date: Mar 2010 Location: Kuwait Posts: 306 Drives: 08 Infiniti G35 5AT Rep Power: 15	Sam did you get my email about the sedan SC kit? __________________ 08 G35 5AT Sedan \| Stillen CBE \| Invidia HFC \| Injen CAI \| Uprev Tune \| Akebono BBK \| Tanabe Coilovers \| Hotchkis Sway Bars \| GTSpec FSB \| Black Headlights & Grille \| Volk GT-F Wheels \| Hankook V12 Evo Tires

12-24-2010, 02:39 PM	#22 (permalink)
Zat_Zuma A True Z Fanatic Join Date: Nov 2008 Location: Edmonton, Alberta ...eh Posts: 1,171 Drives: 2017 Touring auto Rep Power: 18	Nice work Sam ...... me likey __________________ [B]2009 & 2017 370Z Touring Sport Autos SOLD

12-24-2010, 09:24 PM	#26 (permalink)
djpathfinder A True Z Fanatic Join Date: Mar 2010 Location: Edmonton, Canada Posts: 12,910 Drives: 2012 GT-R BE Rep Power: 733	You must love your car that much more , OP. Nicely done Sam! Thanks for posting the videos. How long did the install and tuning take? __________________ 2012 GT-R Black Edition Jet Black 2010 370Z 40th Anniversary // SOLD

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12-24-2010, 08:30 PM	#25 (permalink)
weiboy718 Track Member Join Date: May 2010 Location: Bay Area Posts: 923 Drives: Infiniti G37 Rep Power: 15	Merry Christmas to everyone and longlive to GTM!

12-26-2010, 04:37 PM	#29 (permalink)
Mkai0 Base Member Join Date: Dec 2010 Location: Somewhere in Texas Posts: 209 Drives: 2008 G35 Sedan Rep Power: 14	Just curious why would aftermarket HFC's not last long when going FI? I have a set of Fast Intention HFC's, and I would sure hate to get rid of them because of boost.