Discuss Bosch (Porsche, BMW, Volvo, etc) tuning topics here. Request definitions, discuss parameters, etc.
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bmwe30m50b31
Posts: 14 Joined: Thu Aug 18, 2016 7:17 am
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by bmwe30m50b31 » Fri Aug 19, 2016 9:20 pm
413 red label non vanos afr is (- - -) 19.0+ Is very rich afr. I can not straighten out. why?
dusanE30
Posts: 3 Joined: Fri May 20, 2016 1:30 pm
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by dusanE30 » Wed Aug 24, 2016 11:49 pm
Hello, you say rich, but AFR 19.0 is lean (too much AIR).
Also you mention 413 DME and non vanos.
Post more information.
bmwe30m50b31
Posts: 14 Joined: Thu Aug 18, 2016 7:17 am
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by bmwe30m50b31 » Fri Aug 26, 2016 2:37 am
[quote="dusanE30"]Hello, you say rich, but AFR 19.0 is lean (too much AIR).
Also you mention 413 DME and non vanos.
Post more information.
Ie 14.7 norm. 16.0? : / No enriched?[/img]
olafu
Posts: 186 Joined: Tue Jul 26, 2016 12:35 pm
Location: Finland
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by olafu » Fri Aug 26, 2016 2:59 am
For example 14.7kg air and 1kg fuel induces 14.7:1 AFR.
Best power comes about 12.5-13 AFR, if using gasoline.
If your AFR gauge shows 19.00+ AFR and engine still runs, your AFR gauge fails, or your engine misfiring, when unused oxygen gets in exhaust. Unused oxygen causes error to AFR calculation.
aboutton
Posts: 180 Joined: Wed Mar 09, 2011 2:04 pm
Location: Lebanon
Contact:
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by aboutton » Thu Sep 22, 2016 1:57 pm
Normal aspirated engine AFR :
IDLE 14.7
Cruising 13 to 13.5
Full Throttle 12.5 to 13
Boosted Engines
Idle 14.7
without boost 13 to 13.5
With boost 11.5 to 12 ( to be safe keep it under 12.5 )
HyperBoost Tuning
Tony Ouneissy
Lebanon
bmwe30m50b31
Posts: 14 Joined: Thu Aug 18, 2016 7:17 am
Post
by bmwe30m50b31 » Fri Oct 07, 2016 10:31 pm
aboutton wrote: Normal aspirated engine AFR :
IDLE 14.7
Cruising 13 to 13.5
Full Throttle 12.5 to 13
Boosted Engines
Idle 14.7
without boost 13 to 13.5
With boost 11.5 to 12 ( to be safe keep it under 12.5 )
thank you very much