GTM Supercharger-My Test Drive Impressions

nixxer · 10-24-2010, 05:32 AM

Can anyone post some videos, or make some, that accurately portray the recirc. valve and opperating noise of this SC kit? Interior/Exterior. IE: Driving around regular, spirited, WOT shifting? All the videos I've seen, even TT setups on dynos, you can never hear that rush of air sound(BOV and recirc setups), only exhaust and the noise of the rollers.

CGMobile370Z · 10-24-2010, 07:56 AM

Quote:

Originally Posted by hngonzalez

Can anyone post some videos, or make some, that accurately portray the recirc. valve and opperating noise of this SC kit? Interior/Exterior. IE: Driving around regular, spirited, WOT shifting? All the videos I've seen, even TT setups on dynos, you can never hear that rush of air sound(BOV and recirc setups), only exhaust and the noise of the rollers.

Try this one:

YouTube - GTM 370Z SUPERCHARGER STG1 8PSI 550BHP/400 FT OF TORQUE 460 RWHP 360 RWTQ. TEST DRIVE

nixxer · 10-24-2010, 09:36 AM

Forgot I had seen that video. That satisfies the interior noise. Wonder how it sounded during all that from the outside.

KaienZ34 · 10-24-2010, 11:41 AM

Quote:

Originally Posted by hngonzalez

Forgot I had seen that video. That satisfies the interior noise. Wonder how it sounded during all that from the outside.

I would venture to say it sounded bad as hell !!

J. Dub · 10-24-2010, 12:04 PM

Quote:

Originally Posted by hngonzalez

Can anyone post some videos, or make some, that accurately portray the recirc. valve and opperating noise of this SC kit? Interior/Exterior. IE: Driving around regular, spirited, WOT shifting? All the videos I've seen, even TT setups on dynos, you can never hear that rush of air sound(BOV and recirc setups), only exhaust and the noise of the rollers.

I completely agree. I'm hoping this SC from GTM will sound like the m90 SC does.
Here is a vid of an M90. Listen to the 47second mark

YouTube - Intoxicating Sound of a Rouscharger

CGMobile370Z · 10-24-2010, 05:03 PM

Quote:

Originally Posted by J. Dub

I completely agree. I'm hoping this SC from GTM will sound like the m90 SC does.
Here is a vid of an M90. Listen to the 47second mark

YouTube - Intoxicating Sound of a Rouscharger

I think that gear whine is annoying, I like the fact that the Rotrex supercharger doesn't have the gear whine. It seems like the Rotrex S/C only provides that nice turbo whistle sound.

Flyboy · 10-25-2010, 09:35 AM

How are Belts holding up on this kit?

DannyGT · 10-25-2010, 11:09 PM

Quote:

Originally Posted by J. Dub

I completely agree. I'm hoping this SC from GTM will sound like the m90 SC does.
Here is a vid of an M90. Listen to the 47second mark

YouTube - Intoxicating Sound of a Rouscharger

It wont. My best friend has one of only a handful of supercharged RS4's and its using an M90. It has a pretty sick whine to it especially when you hear the car coming at you. Good news is - I had the pleasure of riding in a Rotrex powered M3, which looked to have the identical unit as mine, just days before I completed my kit and it sounded awesome. Its alot more stealthy sounding but during every shift you can hear the bypass valve giving off a sort-of 'laser gun pew pew' sound (ROFL). One thing we all agreed on was that it still sounded amazing, so worry not people...worry not.

My buddies RS4 for ref... http://www.youtube.com/user/kryptoni.../4/sGKvHUpzMjk He made the video for his forum so its very detailed...just skip to the 8 min mark and you'll hear it. Same as that mustang. Ours wont sound like that, but he also heard the M3 and loved it...

1slow370 · 10-26-2010, 02:52 AM

yeah there wont be any awesome gear whine with the rotrex, and as for comments about a stillen blower blowing a seal on track it's a vortech head-unit, stillen doesn't make it they buy it with a custom label riveted to it, and the vortech head-unit is usually very simple and reliable. on the same coin i remember when rotrex units first came out and HKS used them for their 350z supercharger kit due to the "awesomeness" of the variable ratio steel roller friction drive, and they had nothing but problems with them. The superchargers themselves should be marked for or against the manufacturer of the head unit not the company making the kit. Personally i hate all variable displacement superchargers so i could really care less about either one. The M90 is a beast up to about 350hp after that its adiabatic efficiency shoots through the floor and you better have the worlds most awesome intercooler and an amazing exit port job.

J. Dub · 10-27-2010, 03:55 PM

Quote:

Originally Posted by DannyGT

It wont. My best friend has one of only a handful of supercharged RS4's and its using an M90. It has a pretty sick whine to it especially when you hear the car coming at you. Good news is - I had the pleasure of riding in a Rotrex powered M3, which looked to have the identical unit as mine, just days before I completed my kit and it sounded awesome. Its alot more stealthy sounding but during every shift you can hear the bypass valve giving off a sort-of 'laser gun pew pew' sound (ROFL). One thing we all agreed on was that it still sounded amazing, so worry not people...worry not.

My buddies RS4 for ref... YouTube - kryptonik8's Channel He made the video for his forum so its very detailed...just skip to the 8 min mark and you'll hear it. Same as that mustang. Ours wont sound like that, but he also heard the M3 and loved it...

At first I was like "not sure if want" if it doesn't sound good.... Now, I'm "want!". You sold me on the sound. LOL "pew pew"

shumby · 10-25-2010, 03:10 PM

NOpe not one so far. Like I say the only issue was the hot start issue that I got sent the fix for as soon as i told Sam. Only thing i added was the Navtool so I could listen to Music while watching the Camp 2 as well as getting my Nav working again.

GUTCH · 10-25-2010, 03:29 PM

Quote:

Originally Posted by shumby

Like I say the only issue was the hot start issue that I got sent the fix for as soon as i told Sam.

I have no idea what that issue means or whether or not it would potentially affect me. Yet anyway, is that fix now included with GTM's SC kits as standard?

wishihadnav · 10-25-2010, 04:18 PM

Quote:

Originally Posted by shumby

NOpe not one so far. Like I say the only issue was the hot start issue that I got sent the fix for as soon as i told Sam. Only thing i added was the Navtool so I could listen to Music while watching the Camp 2 as well as getting my Nav working again.

cool thats what i wanted to hear

shumby · 10-25-2010, 03:47 PM

lol. the hot start issue is a problem that occurs after the car is driven for a bit and then turned off. then the heat from the engine soaks into all the engine components. Now try to start the car and it spits and sputters and sounds like it is having a really hard time to start. Ya Sam should have this figured out now. However if you do get this issue as mine did n ot present itself right away, Sam will get you a flash to correct it.

JB-370z · 10-25-2010, 04:01 PM

ya when the motor is hot it needs a tad extra fuel to start thats all, no biggie.

10-24-2010, 05:32 AM	#1 (permalink)
nixxer Base Member Join Date: Jul 2009 Location: Hawaii Posts: 163 Drives: Black 370z 6MT Sp/T Rep Power: 17	Can anyone post some videos, or make some, that accurately portray the recirc. valve and opperating noise of this SC kit? Interior/Exterior. IE: Driving around regular, spirited, WOT shifting? All the videos I've seen, even TT setups on dynos, you can never hear that rush of air sound(BOV and recirc setups), only exhaust and the noise of the rollers. __________________ FI TDX 12" \| FI LTH \| Injen CAI \| UpRev \| Tuned by AMS www.project-definition.com

10-24-2010, 09:36 AM	#3 (permalink)
nixxer Base Member Join Date: Jul 2009 Location: Hawaii Posts: 163 Drives: Black 370z 6MT Sp/T Rep Power: 17	Forgot I had seen that video. That satisfies the interior noise. Wonder how it sounded during all that from the outside. __________________ FI TDX 12" \| FI LTH \| Injen CAI \| UpRev \| Tuned by AMS www.project-definition.com

10-26-2010, 02:52 AM	#9 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	yeah there wont be any awesome gear whine with the rotrex, and as for comments about a stillen blower blowing a seal on track it's a vortech head-unit, stillen doesn't make it they buy it with a custom label riveted to it, and the vortech head-unit is usually very simple and reliable. on the same coin i remember when rotrex units first came out and HKS used them for their 350z supercharger kit due to the "awesomeness" of the variable ratio steel roller friction drive, and they had nothing but problems with them. The superchargers themselves should be marked for or against the manufacturer of the head unit not the company making the kit. Personally i hate all variable displacement superchargers so i could really care less about either one. The M90 is a beast up to about 350hp after that its adiabatic efficiency shoots through the floor and you better have the worlds most awesome intercooler and an amazing exit port job. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

10-25-2010, 03:10 PM	#11 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 46 Posts: 6,288 Drives: your sister Rep Power: 238	NOpe not one so far. Like I say the only issue was the hot start issue that I got sent the fix for as soon as i told Sam. Only thing i added was the Navtool so I could listen to Music while watching the Camp 2 as well as getting my Nav working again. __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

10-25-2010, 03:47 PM	#14 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 46 Posts: 6,288 Drives: your sister Rep Power: 238	lol. the hot start issue is a problem that occurs after the car is driven for a bit and then turned off. then the heat from the engine soaks into all the engine components. Now try to start the car and it spits and sputters and sounds like it is having a really hard time to start. Ya Sam should have this figured out now. However if you do get this issue as mine did n ot present itself right away, Sam will get you a flash to correct it. __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

10-25-2010, 09:35 AM	#7 (permalink)
Flyboy Base Member Join Date: Jul 2010 Location: Destin, Fl Posts: 152 Drives: Nismo Rep Power: 16	How are Belts holding up on this kit?

10-25-2010, 04:01 PM	#15 (permalink)
JB-370z A True Z Fanatic Join Date: Apr 2009 Location: Houston, Tx Posts: 1,859 Drives: Stage 2 Twin Turbos Rep Power: 21	ya when the motor is hot it needs a tad extra fuel to start thats all, no biggie. __________________ ll Baker Tuning ll GTM ll Powerhouse Amuse ll HKS ll Up-Rev ll iForged ll AP Racing ll Pioneer ll SPL ll Bride ll Top Secret ll OS Giken ll GTM Stage 2 Twin Turboed 370z (First in Texas, Thanks To Baker Tuning)

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