GTM Supercharger Stage 1 w/ F.I. LTH

F.I. Inc. · 02-28-2011, 05:00 PM

Quote:

Originally Posted by RCZ

Sorry to respectfully disagree.

So...GTM advertised 460whp at 8psi on 93 OCT w/ 2.5" exhaust and 420whp @ 8psi with stock exhaust in their press release and Dreamer made 394whp with longtube headers and full exhaust.

That is what they claimed but has anyone with their kit that has done an independent dyno ever achieved that? If so, it would be news to me! From what you wrote the numbers do not add up.

Boost is back pressure. The stock exhaust is as restrictive as it gets. When you relieve back pressure in a force inducted application, you have a PSI drop off but you pick up torque and power.

Now it seems like this SC is capped @ 8 PSI. What that tells me is that no matter what you do to it, it cannot move enough volume to move more air than 8 PSI.

Put the larger stage II or III head unit on it create more volume and turn the boost up, period!

The garbage idea of leaving a stock exhaust on a force inducted car is one of the most outrageous things that I have ever heard...

phelan · 02-28-2011, 05:03 PM

I hope this doesn't turn into another flame thread

TBH i really do like that torque curve. Plenty of power throughout the band, I'd love to have that for Rin.

frost · 02-28-2011, 05:07 PM

Quote:

Originally Posted by RCZ

Sorry to respectfully disagree.

So...GTM advertised 460whp at 8psi on 93 OCT w/ 2.5" exhaust and 420whp @ 8psi with stock exhaust in their press release and Dreamer made 394whp with longtube headers and full exhaust.

Mr.Squeeze · 02-28-2011, 05:14 PM

Quote:

Originally Posted by theDreamer

5-6PSI in July does that to our cars here.
A 350zHR with a vortex the same day was putting down around 380 at 8PSI on the same dyno so it definitely was not a fun day for making ones e-peen bigger.

Are you talking about a vortech kit if so they dont make a kit for a 350z HR the do make it for the DE 350z If its 8 psi thats the normal numbers for a DE.

The one thing I notice about all the GTM supercharger dyno's is that flat spot up top most of the times a centrifugal supercharger will keep building boost all the way to redline.

F.I. Inc. · 02-28-2011, 05:44 PM

Quote:

Originally Posted by phelan

I hope this doesn't turn into another flame thread

TBH i really do like that torque curve. Plenty of power throughout the band, I'd love to have that for Rin.

I hope it doesn't tune into that either. I am actually happy to see that someone made 8 PSI with the kit and my full exhaust. It goes to show you that it all can work together when all of the components are doing their job!

Now as far as making 460 at the wheels, c'mon thats bogus. The Stillen/Vortech head unit moves much more volume and to the best of my knowledge they haven't even seen those kind of numbers, (YET)!

If you want to make 450+ you are going to need to turbo the car, plain and simple!

Mr.Squeeze · 02-28-2011, 05:50 PM

Quote:

Originally Posted by F.I. Inc.

I hope it doesn't tune into that either. I am actually happy to see that someone made 8 PSI with the kit and my full exhaust. It goes to show you that it all can work together when all of the components are doing their job!

Now as far as making 460 at the wheels, c'mon thats bogus. The Stillen/Vortech head unit moves much more volume and to the best of my knowledge they haven't even seen those kind of numbers, (YET)!

If you want to make 450+ you are going to need to turbo the car, plain and simple!

I think the vortech Blower can do It it just hasnt been done on a 370z but has on a 350z. I hope to be the first with the unit to do so with my custom set up I am just waiting on my exhaust from you Tony I hope your feeling better this week lol.

F.I. Inc. · 02-28-2011, 05:56 PM

Quote:

Originally Posted by Mr.Squeeze

I think the vortech Blower can do It it just hasnt been done on a 370z but has on a 350z. I hope to be the first with the unit to do so with my custom set up I am just waiting on my exhaust from you Tony I hope your feeling better this week lol.

I cannot wait to see what you can achieve with it! I am feeling better, thanks for asking...

Tony

NYBladeZ · 02-28-2011, 05:58 PM

460whp is what intro level TT's are running, are we to believe that the stage 1 SC and TT make the same power? Still I'm with RCZ on this one, GTM led us to believe more, clearly the stage 1 compressor is not enough.

NYBladeZ · 02-28-2011, 06:01 PM

BTW I'm a huge fan of Tony's long tube headers. Every SC setup I've ever seen, headers and exhaust setups at 2.5" have increased power not robbed.

Z eliminator · 02-28-2011, 06:37 PM

Shumby made 390 rwhp at 6 lbs with stock exhaust manifolds and stock cat's. Not sure what exhaust he had.
Headers and high flow cats will cost you boost and RHWP.

toner123 · 02-28-2011, 06:40 PM

/sigh here we go again

Z eliminator · 02-28-2011, 06:44 PM

If GTM made 460 rwhp then just think what my stage 2 will make.
I will be happy if it makes 450 rwhp. (if it ever gets to me ).
It looks like the average GTM makes around 400 rwhp and that not SAE measured.
The real # would be around 388 to 390 SAE.

Z

Mike@GTM · 02-28-2011, 06:57 PM

Quote:

Originally Posted by RCZ

Sorry to respectfully disagree.

So...GTM advertised 460whp at 8psi on 93 OCT w/ 2.5" exhaust and 420whp @ 8psi with stock exhaust in their press release and Dreamer made 394whp with longtube headers and full exhaust.

I'm not sure why you keep saying we advertise our kit as 460whp. We have said this time and again, not to mention it is on our website, that our Stage 1 Supercharger kit is rated as 500hp. The reason why we rate it in hp, is that there are too many variables involved in wheel horsepower numbers: temperature, elevation, gas quality, dyno type (and dyno setup), and the car itself.

So far, we have many customers that have installed the system and they are on target for the average horsepower we anticipated. At no point did we ever say that our kit is going to make 460whp.

Take the same exact supercharger and install it on an engine that doesn't have crazy overlap (read VQ35HR), and the kit is capable of making 487whp without any special intakes and on stock cats and HKS cat-back exhaust. That's with full control over cam timing (intake and exhaust).

christian370z · 02-28-2011, 07:24 PM

Quote:

Originally Posted by Mike@GTM

Take the same exact supercharger and install it on an engine that doesn't have crazy overlap (read VQ35HR), and the kit is capable of making 487whp without any special intakes and on stock cats and HKS cat-back exhaust. That's with full control over cam timing (intake and exhaust).

Do you think those power levels will be unlocked on the VQ37 with your VVEL controller?

NYBladeZ · 02-28-2011, 07:34 PM

I think the inability to tune VVEL has always been the limiting factor, once they crack it everyone using F.I. is going to see massive gains.

02-28-2011, 05:03 PM	#32 (permalink)
phelan A True Z Fanatic Join Date: Apr 2009 Location: CA Age: 38 Posts: 9,513 Drives: Scoobaroo Rep Power: 3406	I hope this doesn't turn into another flame thread TBH i really do like that torque curve. Plenty of power throughout the band, I'd love to have that for Rin. __________________ 凛 ('Rin') - 2009 Nissan 370Z With silence comes peace. With peace comes freedom. With freedom comes silence.

02-28-2011, 05:58 PM	#38 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 20	460whp is what intro level TT's are running, are we to believe that the stage 1 SC and TT make the same power? Still I'm with RCZ on this one, GTM led us to believe more, clearly the stage 1 compressor is not enough. 370zrider likes this. __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

02-28-2011, 06:01 PM	#39 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 20	BTW I'm a huge fan of Tony's long tube headers. Every SC setup I've ever seen, headers and exhaust setups at 2.5" have increased power not robbed. __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

02-28-2011, 06:37 PM	#40 (permalink)
Z eliminator A True Z Fanatic Join Date: Jul 2009 Location: Ontario Canada Posts: 1,659 Drives: 370 Z 7AT Sports Rep Power: 18	Shumby made 390 rwhp at 6 lbs with stock exhaust manifolds and stock cat's. Not sure what exhaust he had. Headers and high flow cats will cost you boost and RHWP. __________________ 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

02-28-2011, 06:44 PM	#42 (permalink)
Z eliminator A True Z Fanatic Join Date: Jul 2009 Location: Ontario Canada Posts: 1,659 Drives: 370 Z 7AT Sports Rep Power: 18	If GTM made 460 rwhp then just think what my stage 2 will make. I will be happy if it makes 450 rwhp. (if it ever gets to me ). It looks like the average GTM makes around 400 rwhp and that not SAE measured. The real # would be around 388 to 390 SAE. Z __________________ 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

02-28-2011, 06:40 PM	#41 (permalink)
toner123 Track Member Join Date: May 2010 Location: chesapeake va Age: 39 Posts: 823 Drives: TT 370z Touring/SP Rep Power: 15	/sigh here we go again

02-28-2011, 07:34 PM	#45 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 20	I think the inability to tune VVEL has always been the limiting factor, once they crack it everyone using F.I. is going to see massive gains. __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

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