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In-House GTM Stage 2 SC Install\Tune

Originally Posted by Jamaica@UAMotorsports I wonder if I can get over 400lbs or torque.. Yes, it's possible. Here's a graph of the Stage 2 with a smaller diameter pulley making

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In-House GTM Stage 2 SC Install\Tune In-House GTM Stage 2 SC Install\Tune
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Old 11-14-2011, 03:08 PM   #1 (permalink)
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Originally Posted by Jamaica@UAMotorsports View Post
I wonder if I can get over 400lbs or torque..
Yes, it's possible. Here's a graph of the Stage 2 with a smaller diameter pulley making 400wtq. Notice that the pull ends at 6200rpm because we stopped the pull...we were making 14psi of boost which was more than we wanted to make. The stage 2 is a real powerhouse once you start spinning it up.

Normally, we ship the Stage 2 with a 92mm pulley that is good for 500whp on 93 octane gas. Kosstick wanted less power and got the 96mm pulley instead.

Last edited by Mike@GTM; 11-14-2011 at 03:57 PM.
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Old 11-14-2011, 03:47 PM   #2 (permalink)
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Yes, it's possible. Here's a graph of the Stage 2 with a smaller diameter pulley making 400wtq.

wow. Just what I want.
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Old 11-14-2011, 04:51 PM   #3 (permalink)
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That all makes sense, but I am looking at the 400 WTQ dyno and noticing that you are making less HP than a several other STG 2 SCs, though you are making substantially more WTQ. That's what is confusing me. Because the SC is basically linear with boost through the RPM range, I don't get how you are making so much more torque and not a ton more horsepower. Were you make 400 torque and 550+ whp, then it would seem to track your other results more closely.
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Originally Posted by Mike@GTM View Post
Yes, it's possible. Here's a graph of the Stage 2 with a smaller diameter pulley making 400wtq. Notice that the pull ends at 6200rpm because we stopped the pull...we were making 14psi of boost which was more than we wanted to make. The stage 2 is a real powerhouse once you start spinning it up.

Normally, we ship the Stage 2 with a 92mm pulley that is good for 500whp on 93 octane gas. Kosstick wanted less power and got the 96mm pulley instead.

See the bolded section for your answer.
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Old 11-14-2011, 08:13 PM   #4 (permalink)
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See the bolded section for your answer.
Ohhhhhhhhhhhhhh. DUH. Sorry I missed that the first time. I was actually looking at that thinking, 6200 seems like an awfully low redline. Question indeed answered.
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Old 11-14-2011, 09:00 PM   #5 (permalink)
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Originally Posted by Mike@GTM View Post
Yes, it's possible. Here's a graph of the Stage 2 with a smaller diameter pulley making 400wtq. Notice that the pull ends at 6200rpm because we stopped the pull...we were making 14psi of boost which was more than we wanted to make. The stage 2 is a real powerhouse once you start spinning it up.

Normally, we ship the Stage 2 with a 92mm pulley that is good for 500whp on 93 octane gas. Kosstick wanted less power and got the 96mm pulley instead.

seems like the general increase per 1k rpm is 100 WHP just like my set up.

So this car is possibly making 530-550 whp?
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Old 11-15-2011, 11:42 AM   #6 (permalink)
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Ohhhhhhhhhhhhhh. DUH. Sorry I missed that the first time. I was actually looking at that thinking, 6200 seems like an awfully low redline. Question indeed answered.
No problem.

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seems like the general increase per 1k rpm is 100 WHP just like my set up.

So this car is possibly making 530-550 whp?
After examining your dyno graph, you are making 75whp per 1k rpm increase.

4500 rpm -> 260whp
5500 rpm -> 335whp
6500 rpm -> 410whp

Yes, the car we were testing was making 100whp per 1k rpm increase and could have made 550whp, but we stopped the pull because it was more than we wanted to make.
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Old 11-15-2011, 11:58 AM   #7 (permalink)
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No problem.



After examining your dyno graph, you are making 75whp per 1k rpm increase.

4500 rpm -> 260whp
5500 rpm -> 335whp
6500 rpm -> 410whp

Yes, the car we were testing was making 100whp per 1k rpm increase and could have made 550whp, but we stopped the pull because it was more than we wanted to make.
Mike, On my new dyne I think i was making 100 per 1k but i could be wrong, Seb can you post the final run with 463 / 335?
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Old 11-15-2011, 10:40 PM   #8 (permalink)
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Mike, On my new dyne I think i was making 100 per 1k but i could be wrong, Seb can you post the final run with 463 / 335?
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