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man my 08 G37 numbers are not bad either for being 5AT

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Old 06-29-2010, 11:52 PM   #1 (permalink)
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man my 08 G37 numbers are not bad either for being 5AT
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Old 06-30-2010, 06:58 PM   #2 (permalink)
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Originally Posted by whiddles View Post
man my 08 G37 numbers are not bad either for being 5AT
What were your final numbers? I have the 5AT on my 08 G35S and I'm curious how much power dropoff there is between the automatic and
the manual.
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Old 07-01-2010, 01:41 PM   #3 (permalink)
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A few thoughts on power delivery with the S/C:

The stock vq37 starts coming in to it's power band between 2,500 and 3,000 rpm, Then holds a flat torque curve from 3,000-6,000 rpm before it starts falling off.

The VQ37 with the Stillen S/C acts like stock from 2,500-3,000, where the torque is rapidly increasing, but then continues that linear increase in torque all the way to 4,000 rpm before then engine is fully "on". Then the torque curve is flat from 4,000-7,000 rpm before it starts to fall off.

Overall, it's a very useable power band, being near peak torque for a 3,000 rpm range. The fat part is now a thousand rpm higher than N/A, but it's still making more power than the N/A engine everyhwere in the rev range.

Compared to a larger displacement N/A engine, the downside is lower torque from 3-4k rpm, but that's only if the N/A engine has variable valve timing. Otherwise, the larger N/A engine will suffer the same problem. Compared to a turbo engine, the downside is lower torque until the turbo spools up, which would occur, when... 500-700 rpm earlier than the supercharger?
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Old 07-01-2010, 02:12 PM   #4 (permalink)
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Quote:
Originally Posted by CGMobile370Z View Post
What were your final numbers? I have the 5AT on my 08 G35S and I'm curious how much power dropoff there is between the automatic and
the manual.
im at 400whp and around 300 torque
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Old 07-01-2010, 02:20 PM   #5 (permalink)
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im at 400whp and around 300 torque
So the automatic loses 30 to 40 WHP, that's not bad. 400WHP daily driver kicks ***, that torque level should be easier on the auto trans. 2009 infiniti Q56 5AT is rated at 395 ft/lbs torque at the crank, I know the transmissions are not identical but they are both RE5R05A. I hope my trans will hold up well, I think the shift kit will help alot.
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Old 07-01-2010, 10:04 PM   #6 (permalink)
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Quote:
Originally Posted by whiddles View Post
im at 400whp and around 300 torque
Saw a blue g37s with a stillen supercharger installed at Uprev today when I dropped my car off. Jared was showing me it for abit.. That yours?
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