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krasuskyp krasuskyp is offline
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Join Date: Nov 2001
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I continue to follow your plight Fred, as the data folks are contributing is really enlightening. Thanks everyone.

I'll share my situation as a further datapoint for you, and hopefully also gather some feedback on how to bridge 'the gap'.

I've got a BLWUR, headers/IC/exhaust, and bumped up my system pressure from 6.5 to 7.0-7.1 via a new valve/seals/added a shim or 2. 'The gap' I'm referring to is I have to set my idle to 11.0 to get light cruise AFR to be 15.4-15.5 (that's @ 1050-1100rpm idle, if I drop idle to 1k it's more like 10.8, but I like the higher idle).

Anything higher @ idle cranked cruise AFR >16. I'd like to bridge that gap! I'm assuming a WUR adj can help here? Anyone - please? 8-)

I'm also hitting 12.5-12.7 past 5700 or so, thought I was hitting 13's but doesn't seem to be (pretty damn hard to find road to hit those RPM's - while being able to keep an eye on the AFR gauge heh heh!!!).

Another datapoint, I also now get the run-on after bumping up my control pressure - however it's *barely* notable... like a millisecond and just a stutter/fart after shutdown.

Oh, also - I'm averaging 13-14.0mpg on 26mi highway commutes (2mi backroad to highway / 2mi backroad off highway to office), with a solid mix of both WOT and light throttle farting along / coasting. Sure would like a tick higher 8-/.

Agreed w/ Brian tho, do the flow test as 5.7 means there's likely a problem. I changed out fuel filter / accumulator and did volt test of pumps, I too still need to do the flow test - still recovering from Header Install From Hell 2011 so I'm on sabbatical from my wrenchs 8-)...

Good luck, will def keep following this!
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Paul... CT | '87 930 | '08 M3 6gang vert |
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| '07 S6 | '98 M3 vert | '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 07-14-2011, 05:52 AM
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