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Architecture & Porsche's
Join Date: Jan 2006
Location: Austin, Texas
Posts: 3,189
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928 all custom gauges: they have life!
I'm sooo loving this car.
 Pod designed ala F430 Center tach with progressive, programmable shift lights Center extra (bright) shift light & warning lights 200mph speedo (TexasMile Goal) Oil temp, press, water temp (all with low range & high-range warnings) Scramble boost buttons on steering wheel Boost gauge (center console) Air/fuel wideband Boost controller & scramble boost brain In-car kill switch. My design:  Finished product: 
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Porsche Club Racing National Scrutineer '89 Andial 951 '82 928R '74 911 RSR 3.6 |
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10-06-2011, 05:20 AM
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928 Newbie
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#Bada$$
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10-06-2011, 06:17 AM
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Moderator
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Sweet Geesus! Video of some high rpm revs is in order
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** 
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10-06-2011, 06:41 AM
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Architecture & Porsche's
Join Date: Jan 2006
Location: Austin, Texas
Posts: 3,189
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that's the beauty of boost: you don't need high RPM's. A mid-size turbo gives you a 3,000 power band (minimum), peak torque & plently of HP. My Front-mounted intercooler is efficient up to 800hp or so, so since we're well under that & since it's a low boost application, the IC will be much more efficient than in a high-boost application.
High boost: cooling from 250-300 degrees down near ambient. Low boost: cooling from 150-180 degrees down near ambient: less work to do, less heat flowing into the radiator.
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Porsche Club Racing National Scrutineer '89 Andial 951 '82 928R '74 911 RSR 3.6 |
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10-06-2011, 09:51 AM
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Registered User
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What's a scramble boost button? It sounds like something I want on my 951. Anything with "boost" and "button" sounds like I need it.
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1979 928 85 Euro 2v motor,S4 Brakes and suspension, 1988 951 street legal track car(sold) Neon SRT4 track car |
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10-06-2011, 09:58 AM
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Architecture & Porsche's
Join Date: Jan 2006
Location: Austin, Texas
Posts: 3,189
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Hey Pete.
Using a normal wastegate (Tial for example), you purchase a boost controller (AEM True Boost, Greddy Profec, etc) that's equipped with the scramble boost. Purchase a suitable spring-loaded button, and hook them up. I used the Sparco buttons on my OMP wheel & used a coiled cable to connect to ground & to my Scramble boost input on my boost controller. Basically, you set a high & low boost setting. You run on low boost most of the time, but if you hit the scramble boost button, it immediately sets u up on high boost for a preset amount of time (10, 15, 20 seconds for example). Once the clock runs out, it defaults back to the low boost mode. THis is great for passing people on straight lengths of track.
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Porsche Club Racing National Scrutineer '89 Andial 951 '82 928R '74 911 RSR 3.6 |
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10-06-2011, 10:02 AM
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MoneyPit
1988 Porsche 951
