GTM Stage 1.5 supercharger build

Baer383 · 09-15-2013, 01:52 PM

Quote:

Originally Posted by Super Werty

When you go stage 2 is the only difference the larger -91 trim Rotrex?

Reason I ask is because...

I was the first to run the -91 on my Toyota Tacoma. Underdog Racing Development made the kit with a -81 but I asked for a -91 with a larger pulley.

What we ended up finding out was that I was making way more midrange power and a peak of about 450rwhp on a less aggreesive timing map on only 9.7 psi. While the guys running the -81 trim made less midrange and took a whopping 15 psi to hit 450rwhp.

The -91 trim also provided significantly lower boost temps

Wonder if GTM has tried the -91 with a larger pulley.

The 1.5 kit does use the smaller blower but it provides more mid range torque and in my case it has also given me more hp than stage 2.

Super Werty · 09-15-2013, 07:35 PM

Quote:

Originally Posted by Baer383

The 1.5 kit does use the smaller blower but it provides more mid range torque and in my case it has also given me more hp than stage 2.

I am curious what you are comparing to? Did you try stage 2 and then go back to 1.5?

Baer383 · 09-15-2013, 07:42 PM

Quote:

Originally Posted by Super Werty

I am curious what you are comparing to? Did you try stage 2 and then go back to 1.5?

There is no one on this forum with stage 1,1.5,2 that has more power than me plus dyno results are on the forum.

SPOHN · 09-15-2013, 07:49 PM

Quote:

Originally Posted by Baer383

There is no one on this forum with stage 1,1.5,2 that has more power than me plus dyno results are on the forum.

Truth

Super Werty · 09-15-2013, 08:47 PM

Quote:

Originally Posted by Baer383

There is no one on this forum with stage 1,1.5,2 that has more power than me plus dyno results are on the forum.

Anyone with Stage 2 and the same supporting mods as you? Same tuning? too many factors...not saying you are wrong, I believe you have the highest hp but the -91 is a larger more efficient blower

Baer383 · 09-15-2013, 09:06 PM

Quote:

Originally Posted by Super Werty

Anyone with Stage 2 and the same supporting mods as you? Same tuning? too many factors...not saying you are wrong, I believe you have the highest hp but the -91 is a larger more efficient blower

It doesn't matter how efficient it is it doesn't make more power and thats whats important.

Super Werty · 09-15-2013, 09:12 PM

Quote:

Originally Posted by Baer383

It doesn't matter how efficient it is it doesn't make more power and thats whats important.

Sure it does. The -91 trim flows 11% more than the -81. You may have the record for now, but I have no doubt someone running a -91 will be able to easily surpass your hp and torque curve

more air and less heat is going to make more power. I would say for now you probably have a superior tune than others with a stage 2

Baer383 · 09-15-2013, 09:22 PM

Quote:

Originally Posted by Super Werty

Sure it does. The -91 trim flows 11% more than the -81. You may have the record for now, but I have no doubt someone running a -91 will be able to easily surpass your hp and torque curve

more air and less heat is going to make more power. I would say for now you probably have a superior tune than others with a stage 2

Not just for now but the last 2.5 years ,thats alot of kits sold since then.

Mr&Mrs · 09-15-2013, 09:24 PM

I thought Jamaica was close to 550 WHP with the Stage 2 kit and he blew his 7AT then sold the car.

Baer383 · 09-15-2013, 09:30 PM

Quote:

Originally Posted by Mr&Mrs

I thought Jamaica was close to 550 WHP with the Stage 2 kit and he blew his 7AT then sold the car.

He had 504rwhp 362rwtq stage 2

Forced Induction Finished Builds

Mr&Mrs · 09-15-2013, 09:33 PM

Quote:

Originally Posted by Baer383

He had 504rwhp 362rwtq stage 2

Thats right, I did just find one of Sams dynos Stage 2 stock exhaust and cats 523.9 HP 372.1 TQ on 11 PSI

Baer383 · 09-15-2013, 09:42 PM

Quote:

Originally Posted by Mr&Mrs

Thats right, I did just find one of Sams dynos Stage 2 stock exhaust and cats 523.9 HP 372.1 TQ on 11 PSI

But the thing that not a lot of people know is that they use the smallest pulley possible to get those numbers,I should know I tried to buy that pulley from Sam he won't sell it to me claiming it will over spin the blower.

Mr&Mrs · 09-15-2013, 09:48 PM

Sounds like a conspiracy to not hurt Stage 2 sales

Baer383 · 09-15-2013, 09:51 PM

Quote:

Originally Posted by Mr&Mrs

Sounds like a conspiracy to not hurt Stage 2 sales

Nobody has noticed that no matter what kit you buy no one that I know of has beat their numbers sounds fishy.

Super Werty · 09-15-2013, 10:10 PM

well again not really talking so much about peak numbers here. Looking for the curve.

Congrats on your kit though, good power. Just not enough for me

09-15-2013, 09:24 PM	#54 (permalink)
Mr&Mrs A True Z Fanatic Join Date: May 2010 Location: Tampa Posts: 4,207 Drives: RZ34 Rep Power: 31940	I thought Jamaica was close to 550 WHP with the Stage 2 kit and he blew his 7AT then sold the car. __________________ Project Z <--Click - Check out the link too many mods to list!

09-15-2013, 09:48 PM	#58 (permalink)
Mr&Mrs A True Z Fanatic Join Date: May 2010 Location: Tampa Posts: 4,207 Drives: RZ34 Rep Power: 31940	Sounds like a conspiracy to not hurt Stage 2 sales __________________ Project Z <--Click - Check out the link too many mods to list!

09-15-2013, 10:10 PM	#60 (permalink)
Super Werty Track Member Join Date: Jul 2013 Location: AZ Posts: 668 Drives: '13 Sport Rep Power: 13	well again not really talking so much about peak numbers here. Looking for the curve. Congrats on your kit though, good power. Just not enough for me __________________ The Build

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