What I've been working on... Turbo GP SOLD! - Page 28 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 03-14-2011, 10:52 PM   #271
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No thanks. I've heard nothing but horror stories of people trying to use Holley Commanders and total custon sensors throughout a Northstar. To many parameters/sensors and why GM locked these PCM'*. Add to that the interaction between the PCM and the TCM, learn procedures, Variable timing, T/C, advanced ABS, DIC, Onstar, HUD, Monsoon headunit, built in carphone with voice recognition and computer generated voice feedback, accelerometers, yaw sensors, StablTrack, MagnaSteering, ABS, T/C, automatic ride control, yada, yada..... (I'm sure I forgot some things, I'll leave her sexy, everything functioning, and slightly under powered self alone. TY, but no TY. There will be another car for me in the future.
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Old 03-14-2011, 10:59 PM   #272
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I don't know why I was thinking you had an L67. I guess I just assume that everyone has one. LOL
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Old 03-14-2011, 11:03 PM   #273
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<-- no haz L67.

<-- no want L67.

<-- does want N*.

<-- VERY interested in semi-local N* MC.
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Old 03-14-2011, 11:06 PM   #274
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You buy it, I'll megasquirt it.
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Old 03-14-2011, 11:09 PM   #275
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nah... i developed the nAst1 code with the Northstars in mind(hence the 400-8400 RPM VE and Spark tables), so the only thing after that is controlling the 4T80, which i'll likely do with a bit of custom coding on the $0D/31/0E masks...

i'm interested in seeing where you can take yours though...
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Old 03-14-2011, 11:15 PM   #276
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Haha, I want to buy a MS3 and expansion board so I can have (damn near) unlimited I/Os.

On a side note, the megasquirt is running fantastic. It'* to the point where somebody could sit in my car, fire it up and drive it around and have no clue that the original ECM isn't there. Except of course that the Tach still isn't working. I need to install an inline variable resistor to get it just right.
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Old 03-14-2011, 11:17 PM   #277
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FWIW, i needed around ~280K ohms to get the one in wifey'* GP just right. then again, her cluster was all kinds of messed up before i started playing with it...
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Old 03-14-2011, 11:21 PM   #278
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Cool, that'* a start. I've got a 100K on there right now and an aftermarket tach is reading high. The dash is WAAAYYY off. LOL
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Old 03-17-2011, 10:52 AM   #279
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Yesterday the turbo went off to have the internal wastegate ported and a 2.5 V-band welded on to the exhaust flange. When I get it back, we can finally start installation.
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Old 03-18-2011, 10:09 PM   #280
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I went to install the turbo tonight and got it about halfway done removing the old turbo when I realized that they use different oil return adapters. So, I put it all back together and I'm off to ebay to order the correct fitting. Needless to say, I'm disappointed.

But some good news. I got my turbo pieces back from the welder.



Some beauty shots:




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