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krasuskyp krasuskyp is offline
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Join Date: Nov 2001
Location: top of 3rd
Posts: 4,124
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Sorry, I'm no enginerd and don't have good technical reasons, but my 'other life' lies within the Audi realm. My former '95 //S6 ran an OE K24 that I had a custom chipset live-burned (on road) to 22.5 psi, on the OE 2.2 5cyl. 9.3:1 CR. All OE Motoronic ECU / Bosch Plat. plugs / individual coils, and 93 octane.

The next (factory!) step up was to run the RS2 K26 hybrid snail, which most guys ran @ 26psi (all day every day day in day out WOT 7,200 rpm 10's of thousands of miles) which produced typically in the 320hp to (all 4) wheels, and some nutters even spike up to 28-30 range.

I put 80k WOT @ 22.5, sold it @ 165k and was running strong. It's quite nutty to experience the caucauphony of madness at that psi / RPM, definitely titalating. On a cool misty morning, boosting it WOT was like VEHICULAR BONGHITS. Miss that car 8-).

So I guess my answer is ECU, chipset burn, and forged crank / internals.

HTH.
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Paul... CT | '87 930 | '07 //S6 v10 JNR | '98 ///M3 vert |
past:

| '01 ///M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 //S8 | '95 //S6 6gang | '88 ///M5 | '87 190E 2.3-16 |
Old 04-07-2009, 05:51 PM
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