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Messages - snowman

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WAR Software Support / Re: rpm limit resets to 0
« on: March 02, 2015, 01:09:50 PM »
no luck on any method of changing rpm limit.  changing it with up arrow, then saving file, before planning to write hangs up computer (XP Pro.)  Just writing resets rpm to 0.

WAR Software Support / rpm limit resets to 0
« on: February 22, 2015, 02:37:09 PM »
the rpm limit is set to 7120, any other setting, higher or lower (e.g. 7200, 6500) results in 0 rpm after written to chip.  car won't start.  read all shows rpm limit set to 0 rpm.  reset to 7120 and re write works, but no other rpm will.

The reason I asked about part throttle maps is because at wot everything is ok, but as soon as the throttle is backed off a bit the engine starts knocking, big time.  Back to wot it's ok.

4/5 throttle causes knocking in all cases, 5/5 is ok.

That's with the factory chip, intel LD2764-4,  BMW 1267355059 in 055ecu.

Is there an efficient procedure to fill in part throttle maps?  Full throttle data first?  No load data vs rpm,  partial load data vs rpm and so forth.

AF ratio constant at say 13:1, all loads, rpm, then ign. advance to max power without detonation,  AF 14.2:1 at light load all rpm, again ign. advance to max power, again without pinging or detonation.

what to change for different temperatures?  Barometric pressures?

Is there a book that goes into all these details about generating best maps? :-\

General Discussion / measured air flow
« on: July 13, 2014, 02:42:08 PM »
i have measured the air flow of my cylinder head plus intake runners using a super flow 600 flow bench in 0.050" increments until flow maxes out, about 0.4" lift.
I have detailed cam lift vs angle in 5 degree increments.  Head cc (44), compression ratio (10.5:1) as well as dynamic cr (7.8:1).
Is there a way to build an accurate map from this information?

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