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Supercharged C6Z vs Alpha 9 GTR

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Old 10-17-2012, 05:07 PM
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Originally Posted by evangto87
i think what he meant by boost dropping is that once you let the clutch out, regardless of if u never lifted off the gas, the motor is going to be at a certain rpm and with a blower as you know, its boost is dictated by the rpm of the motor.
Exactly. Obviously power shifting is beneficial in all applications (pending traction), but whether you power shift or not, the rpm is going to drop and the boost will drop with it. If the car makes 10 psi at the point you shift, power shifting isn't going to allow you to come into the next gear making 10 psi.
Old 10-17-2012, 05:12 PM
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Originally Posted by ScreaminRedZ
Exactly. Obviously power shifting is beneficial in all applications (pending traction), but whether you power shift or not, the rpm is going to drop and the boost will drop with it. If the car makes 10 psi at the point you shift, power shifting isn't going to allow you to come into the next gear making 10 psi.
which is why realistically... turbo is king!
Old 10-17-2012, 05:37 PM
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On the other hand, if you are going to shift slow, the centri blower would have the advantage over the turbo, unless it's a very fast spooling turbo setup.
Old 10-17-2012, 05:46 PM
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Ofcourse.....but, the idea behind shifting quicker, is to allow less rpm loss....meaning you'll be into power quicker then the douche thats shifting next to you like a granny. regardless of setup, the quicker the shifting, the least amount of rpm lost, therefore in theory, keeping said vehicle in its power band or a lot closer to it,....then if slowly shifted.


Not disagreeing what you guys are saying, but at same time, this is all common sense.

Edit: never mind, I forget, other people can read this too. ;-)
Old 10-17-2012, 05:47 PM
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Originally Posted by ScreaminRedZ
On the other hand, if you are going to shift slow, the centri blower would have the advantage over the turbo, unless it's a very fast spooling turbo setup.
Every turbo setup i've driven, reacts to boost differently ...but they all responded the same to quicker shifts.
Old 10-17-2012, 05:49 PM
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I think you guys need an interior vid of a serious turbo setup being driven properly....only have the Camera inside the car. Boost lag, etc, is all a bunch of BS, when driven properly.
Old 10-17-2012, 06:02 PM
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Originally Posted by V-seriesTech
I think you guys need an interior vid of a serious turbo setup being driven properly....only have the Camera inside the car. Boost lag, etc, is all a bunch of BS, when driven properly.
Not really sure how to respond here. I think everyone was in agreement about this in regards to how turbo setups respond to driving.
Old 10-17-2012, 06:30 PM
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Originally Posted by ScreaminRedZ
Not really sure how to respond here. I think everyone was in agreement about this in regards to how turbo setups respond to driving.
I thought thats the reason for using an auto when doing a turbo, foot never leaves the floor
Though I guess their are boxes you can run for maintaining boost, or trans that doesn't require much lifting.
Old 10-17-2012, 06:38 PM
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Originally Posted by TT427
I thought thats the reason for using an auto when doing a turbo, foot never leaves the floor
Though I guess their are boxes you can run for maintaining boost, or trans that doesn't require much lifting.
I run a NLS module on my 135i, but boost will still drop a little when you clutch in as load dictates boost for turbo cars. During a NLS my logs show that boost drops from 15psi to 8psi and right back up again. it's better than loosing so much spool that it's back in vacuum. Now the TA with a nice stalled auto never loses spool through out the run.

Last edited by willizm; 10-17-2012 at 06:52 PM.
Old 10-17-2012, 06:53 PM
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just curious, those of you who prefer a MT over a DCT/DKG, have you driven a car with it, or just prefer to maintain the driver/car connection aspect?
Old 10-17-2012, 07:02 PM
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I think Ferrari might be on to something in the transmission dept....


As always---- American cars--- esp. GM.... are behind the curve.
I for one am ok with that though as the tools are relatively few and the parts are comparatively cheap.

We still think the best way to teach children is in rows of seats so they are prepared for factory work when they grow up!!!
Old 10-17-2012, 09:53 PM
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Originally Posted by LostM
just curious, those of you who prefer a MT over a DCT/DKG, have you driven a car with it, or just prefer to maintain the driver/car connection aspect?
No DCT available for a 4th gen and Id rather be rowing my own gears in the 135i. Down the road I may check one out but it would be in a GT-r or next gen M3.
Old 10-17-2012, 09:55 PM
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Originally Posted by LostM
just curious, those of you who prefer a MT over a DCT/DKG, have you driven a car with it, or just prefer to maintain the driver/car connection aspect?
Sadly us American car owners don't get a $20k transmission option .

We either get manual that most can't drive, or automatic that blows and shifts like 18 seconds after it should.
Old 10-18-2012, 11:53 AM
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2ss... yes lg motorsports offer a 28,282$ transmission for the c6...
https://www.lgmotorsports.com/produc...oducts_id=2179
Old 10-18-2012, 06:57 PM
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All i was going to get at, was its just as fun, if not more, to drive a dct car, than a MT car.. add to that the performance benefit and its win/win
Old 10-19-2012, 02:03 AM
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Originally Posted by Imstock2
2ss... yes lg motorsports offer a 28,282$ transmission for the c6...
https://www.lgmotorsports.com/produc...oducts_id=2179
Badass Transmission.

Last edited by bamaballa205; 10-19-2012 at 03:46 AM.
Old 10-19-2012, 02:07 AM
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Old 10-20-2012, 08:43 PM
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Nice Cars
Old 10-20-2012, 10:27 PM
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Originally Posted by willizm
Now the TA with a nice stalled auto never loses spool through out the run.
How do you like the Jake's 4l80e? Buddy just ordered one for his 402 LS2 turbo build
Originally Posted by Imstock2
2ss... yes lg motorsports offer a 28,282$ transmission for the c6...
https://www.lgmotorsports.com/produc...oducts_id=2179
SSARME won't even spend $3,000 on a built 6l80e for his car - I highly doubt he would opt for that
Old 10-21-2012, 08:01 AM
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Originally Posted by marc97taws6
How do you like the Jake's 4l80e? Buddy just ordered one for his 402 LS2 turbo build

SSARME won't even spend $3,000 on a built 6l80e for his car - I highly doubt he would opt for that
I haven't gotten it Yet. Spoke to them on Thursday and it was going on their QA dyno machine Friday. Hopefully he will have it shipped on Monday. They got backed up with a bad batch of shafts from their manufacturer so it held up a bunch of transmission builds including mine. i'm excited for it though. i got the big bad mama-jamma that is good for 1500hp and has a transbrake. Should be serious business when I get it in the car.

In the interim, here's a shot at my pro yank 6bolt converter

Last edited by willizm; 10-21-2012 at 08:10 AM.


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