GTM Performance Engineering 370Z SUPERCHARGER KIT PRESS RELEASE

LiquidZ · 09-17-2010, 06:24 PM

Quote:

Originally Posted by Staples

Stage 2 is going to offer the 91 size compressor housing which is pretty much the biggest unit Rotrex offers in the C38 trim. This will be for the people that want to use longtube headers or test pipes (or just want to make more power in general). The stage 1 is too small to keep up with the lessen back-pressure, so if you have anything besides high flow cats and catback, your best bet is Stage 2.

The C38-91 is available now?

Staples · 09-17-2010, 09:49 PM

Quote:

Originally Posted by LiquidZ

The C38-91 is available now?

GTM is waiting on the housings and a couple other fabricated pieces.

DannyGT · 09-17-2010, 10:58 AM

Same update from my personal thread...

Here is where we stand...

From the beginning the only problem (if you would even call it that) was the intake pipe which caused delays to ship in the first place. Well the newly casted pieces are ALOT thicker than the prototype. So basically the p-type is performing better than final version. They are taking the steps needed to completely bore out the inside to reach its intended spec. Its unfortunatly, because its one of the things out of their control and ofcoarse someone had to F up.

Thats the gist of it right there...no gimmicks, no secrecy, no 'the car isnt running right', its simply that stupid casted intake piece.

Believe me, Sam is working like mad trying to get this sorted out to overnight me the piece as soon as its available. I have my daily driver so it isnt a problem for me but I am anxious to finish this thing now!

More updates as soon as I get the new piece (within the next week)

RCZ · 09-17-2010, 11:08 AM

So these pieces are making your kit do what exactly? How much power did the car lose?

So they had to make some pieces thicker because there was a danger that it would fail and now the new pieces are too restrictive? Am I reading this right?

Does that mean that the cars that are out there already, like Shumby's, have cast pieces that are too thin?

theDreamer · 09-17-2010, 11:10 AM

Quote:

Originally Posted by RCZ

So these pieces are making your kit do what exactly? How much power did the car lose?

So they had to make some pieces thicker because there was a danger that it would fail and now the new pieces are too restrictive? Am I reading this right?

Does that mean that the cars that are out there already, like Shumby's, have cast pieces that are too thin?

No, the pieces out right now are fine, but Sam went back and wanted to improve the design and is doing so. One reason is to maybe help stage 1 kits play better with LTHs, no test done yet as I am waiting on my piece currently also.

SAM@GTM · 09-17-2010, 11:17 AM

Every kit that is out there is 100 % on the car and beaning driving by the customers. there is no cars that are down or have any sort of a safety or driveabilty problem or a check engine light or any thing like that . We did discover a little inconsistency in the intake peace which could lead to a boost taper over 6500 rpm, The rest of the power band is 100 % where is suppose to be . also few customer reported a little excessive flutter from the by pass valve on some vehicles which we are addressing right now . Overall customer are getting these kit, putting them on and driving away .

Sam

RCZ · 09-17-2010, 11:19 AM

Quote:

Originally Posted by SAM@GTM

Every kit that is out there is 100 % on the car and beaning driving by the customer there is no cars that is down or have any sort of a safety or drivebilty problem or a check engine light or any thing like that . We did discover a little inconsistency in the intake peace which could lead to a boost taper over 6500 rpm the rest of the power band is 100 % whee is suppose to be . also few customer reported a little excessive flutter from the by pass valve on some vehicles which we are addressing right now . overall customer are getting these kit putting them on and driving away .

Sam

Thanks for the response. Looking forward to results.

SAM@GTM · 09-17-2010, 11:26 AM

Quote:

Originally Posted by theDreamer

No, the pieces out right now are fine, but Sam went back and wanted to improve the design and is doing so. One reason is to maybe help stage 1 kits play better with LTHs, no test done yet as I am waiting on my piece currently also.

+1

Dreamer and the Baker tuning group in Houston have been kind enough to allows us to see how we can optimize the LTH and the Supercharge kit .

Thank you Matt .

Sam

theDreamer · 09-17-2010, 11:27 AM

Quote:

Originally Posted by SAM@GTM

+1

Dreamer and the Baker tuning group in Houston have been kind enough to allows us to see how we can optimize the LTH and the Supercharge kit .

Thank you Matt .

Sam

Glad to help.

Fezzik · 09-17-2010, 12:43 PM

I've got my kit on order Stage 1. I'm doing a base dyno and then doing another dyno after the install. engine has 1200 miles on it.

RCZ · 09-17-2010, 11:13 AM

Ah ok, so Sam is boring out cast pieces so they flow better...so that can help the stg1 kit make use of the LTH?

DannyGT · 09-17-2010, 11:14 AM

I'm not sure where I said they had to make it 'thicker' because it was to thin.

here is how it works...

You create a hand fabricated piece, be it from exhaust piping/aluminium/whatever. You then send it out to get replicated in casted form so the cost is lower than hand crafting it every single time. Well the casting company made it to thick on the inside which is basically choking the compressor. Thats it. Once it gets bored out to the same diameter as the prototype piece everything goes back to normal.

See..that was easy.

RCZ · 09-17-2010, 11:18 AM

You didnt, I'm just trying to figure out whats going on since everyone's been quiet about it lately and I'm curious to see what third party users are getting power wise from this kit.

christian370z · 09-17-2010, 04:52 PM

Disregarding the CARB visual inspection, would stage 1 technically allow the car to pass the emissions portion of the test?

SAM@GTM · 09-17-2010, 05:05 PM

Quote:

Originally Posted by christian370z

Disregarding the CARB visual inspection, would stage 1 technically allow the car to pass the emissions portion of the test?

Yes it does .

Sam

09-17-2010, 10:58 AM	#3 (permalink)
DannyGT Track Member Join Date: Jan 2009 Location: Jersey Posts: 919 Drives: 370Z (SOLD) Rep Power: 281	Same update from my personal thread... Here is where we stand... From the beginning the only problem (if you would even call it that) was the intake pipe which caused delays to ship in the first place. Well the newly casted pieces are ALOT thicker than the prototype. So basically the p-type is performing better than final version. They are taking the steps needed to completely bore out the inside to reach its intended spec. Its unfortunatly, because its one of the things out of their control and ofcoarse someone had to F up. Thats the gist of it right there...no gimmicks, no secrecy, no 'the car isnt running right', its simply that stupid casted intake piece. Believe me, Sam is working like mad trying to get this sorted out to overnight me the piece as soon as its available. I have my daily driver so it isnt a problem for me but I am anxious to finish this thing now! More updates as soon as I get the new piece (within the next week) __________________ Performance GTM Stage 1 SC, GTM Res.Test Pipes, Invidia Gemini Exhaust, GTM HD Oil Cooler Wheels & Suspension AME Tracer TM02's 19x9.5F 19x10.5R w/ 265x35F & 305x30R, Hotchkis Sways, BC (BR) Racing Coilovers (Car Sold)

09-17-2010, 11:17 AM	#6 (permalink)
SAM@GTM NOT AN ACTIVE SPONSOR. DO NOT BUY Join Date: Dec 2008 Location: CALIFORNIA Posts: 913 Drives: 370Z Rep Power: 19	Every kit that is out there is 100 % on the car and beaning driving by the customers. there is no cars that are down or have any sort of a safety or driveabilty problem or a check engine light or any thing like that . We did discover a little inconsistency in the intake peace which could lead to a boost taper over 6500 rpm, The rest of the power band is 100 % where is suppose to be . also few customer reported a little excessive flutter from the by pass valve on some vehicles which we are addressing right now . Overall customer are getting these kit, putting them on and driving away . Sam Last edited by SAM@GTM; 09-17-2010 at 11:30 AM.

09-17-2010, 11:14 AM	#12 (permalink)
DannyGT Track Member Join Date: Jan 2009 Location: Jersey Posts: 919 Drives: 370Z (SOLD) Rep Power: 281	I'm not sure where I said they had to make it 'thicker' because it was to thin. here is how it works... You create a hand fabricated piece, be it from exhaust piping/aluminium/whatever. You then send it out to get replicated in casted form so the cost is lower than hand crafting it every single time. Well the casting company made it to thick on the inside which is basically choking the compressor. Thats it. Once it gets bored out to the same diameter as the prototype piece everything goes back to normal. See..that was easy. __________________ Performance GTM Stage 1 SC, GTM Res.Test Pipes, Invidia Gemini Exhaust, GTM HD Oil Cooler Wheels & Suspension AME Tracer TM02's 19x9.5F 19x10.5R w/ 265x35F & 305x30R, Hotchkis Sways, BC (BR) Racing Coilovers (Car Sold)

09-17-2010, 04:52 PM	#14 (permalink)
christian370z A True Z Fanatic Join Date: Jul 2010 Location: Newport Beach Posts: 3,900 Drives: 2010 370Z/Saab 900se Rep Power: 433	Disregarding the CARB visual inspection, would stage 1 technically allow the car to pass the emissions portion of the test? __________________ -320whp / 259wftlbs- SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

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09-17-2010, 11:08 AM	#4 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	So these pieces are making your kit do what exactly? How much power did the car lose? So they had to make some pieces thicker because there was a danger that it would fail and now the new pieces are too restrictive? Am I reading this right? Does that mean that the cars that are out there already, like Shumby's, have cast pieces that are too thin?

09-17-2010, 12:43 PM	#10 (permalink)
Fezzik Base Member Join Date: Jun 2010 Location: Chicago Posts: 182 Drives: G37 Vert 6mt White Rep Power: 16	I've got my kit on order Stage 1. I'm doing a base dyno and then doing another dyno after the install. engine has 1200 miles on it.

09-17-2010, 11:13 AM	#11 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	Ah ok, so Sam is boring out cast pieces so they flow better...so that can help the stg1 kit make use of the LTH?

09-17-2010, 11:18 AM	#13 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	You didnt, I'm just trying to figure out whats going on since everyone's been quiet about it lately and I'm curious to see what third party users are getting power wise from this kit.

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