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EFR comparison 8374 vs 7670

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Old Feb 3, 2013, 08:23 AM
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Originally Posted by khmerpimpin
Well he did change his user name to his real name, and it still says the account is disabled, so I'm sure that wasn't the case.
He made several posts complaining about the rules so they banned him. He wasn't banned at first when a mod changed his screen name.
Old Feb 3, 2013, 08:39 AM
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Originally Posted by batty200
He made several posts complaining about the rules so they banned him. He wasn't banned at first when a mod changed his screen name.
I see, that is unfortunate, dumb moderator.
Old Feb 13, 2013, 11:44 AM
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Do you have the boost log?

Are there a lot of different response between these 2 turbos? The 7670 response like a 80 series, and the 8374?
Old Feb 13, 2013, 12:42 PM
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I have several boost logs.

I'm going to be compiling a LOT of data on the 7670 to compare with the 8374 when I finally make the switch next year or so.

All of my dyno testing will be done on a Dynapack and I'll have a nicely compiled T90 Transient response data represented graphically... as well as turbospeed data to boot.

THe car is down for alternator issues... hopefully it's back up next week and on the dyno that following weekend for more tweaking.
Old Feb 13, 2013, 02:32 PM
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Well, I would like to see some of your turbo logs and the Geoff's car too if you have someone. Don't you have the turbo logs of this test?
Old Feb 13, 2013, 02:57 PM
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I have boost logs, but they're in kpa and I think the dynocharts show boost on them IIRC. My turbospeed sensor was not working yet because I needed a divider for the Digital Signal.
Old Feb 13, 2013, 03:19 PM
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You can post it anyway I make the conversion to psi/bar

What is IIRC?
Old Feb 13, 2013, 05:25 PM
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Originally Posted by _david_
You can post it anyway I make the conversion to psi/bar

What is IIRC?
IIRC = If I Recall Correctly
Old Feb 14, 2013, 10:55 AM
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Originally Posted by _david_
What is IIRC?
http://www.urbandictionary.com/

Linked for the LULZ.

l8r)
Old Feb 14, 2013, 04:32 PM
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Ok thank you

Then do you post the boost log in kpa? although kpa
Old Feb 11, 2015, 01:36 AM
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I need to post some data up here.

8374 on same 2.2L but with S2 camshafts on 270kpa of boost is doing 540awhp corrected/560awhp uncorrected on E85 peak torque right at 4k. Spins 1st and 2nd... its awesome.
Old Feb 11, 2015, 05:23 AM
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Originally Posted by R/TErnie
I need to post some data up here.

8374 on same 2.2L but with S2 camshafts on 270kpa of boost is doing 540awhp corrected/560awhp uncorrected on E85 peak torque right at 4k. Spins 1st and 2nd... its awesome.
your sig shows you made the same power on the 7670. typo, or care to elaborate?
Old Feb 11, 2015, 09:28 AM
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Originally Posted by R/TErnie
I need to post some data up here.

8374 on same 2.2L but with S2 camshafts on 270kpa of boost is doing 540awhp corrected/560awhp uncorrected on E85 peak torque right at 4k. Spins 1st and 2nd... its awesome.
Awesome to see its finally back to life. 270 KPa? You've been working on Audis too long now. For those who don't have a calculator handy, that's ~25 psi of boost.

Any wheel speed data yet?

My guess is that you'll end up pretty close to Martin's Evo - 750 whp on kill mode, literally for his turbo. I suspect safe max power for this turbo is right at 700 whp or maybe a skosh less.
Old Feb 11, 2015, 02:02 PM
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Originally Posted by mrfred
Awesome to see its finally back to life. 270 KPa? You've been working on Audis too long now. For those who don't have a calculator handy, that's ~25 psi of boost.
270kpa boost is 39psi! Actually really high for only mid 500whp, was it meant to be 270kpa pressure (ie, ~170kpa boost)?
Old Feb 11, 2015, 02:33 PM
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Originally Posted by MrLith
270kpa boost is 39psi! Actually really high for only mid 500whp, was it meant to be 270kpa pressure (ie, ~170kpa boost)?
Usually people quote KPa as absolute pressure rather than relative pressure. I'm pretty sure he's only at 25 psi of boost.


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