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Author Topic: Flames on over run  (Read 13308 times)
adeyspec
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« on: April 24, 2013, 10:45:44 AM »

What makes you have flames when you let off the throttle at high revs? Seen a lot af tuned vag cars recently that lick out flames when they let off
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Acki
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« Reply #1 on: April 24, 2013, 10:55:23 AM »

Late fuel cut and ignition? Latence of the air mass at the MAF sensor? I'm not sure.
Some ECM have a after injection for pre cat cooling.
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Rabbid
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« Reply #2 on: April 30, 2013, 02:06:20 AM »

Check out KFZWMN for a start I'd say Wink
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NOTORIOUS VR
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« Reply #3 on: April 30, 2013, 07:13:00 AM »

Be mindful of this if you have a catalytic converter...
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SCHNELL ENGINEERING BLOG ·  STANDALONE ECUS · TUNING · DYNO · WIRING · PARTS · VEMS
Google Talk: NOTORIOUS.VR
n00bs start here: http://s4wiki.com/wiki/Tuning
adeyspec
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« Reply #4 on: April 30, 2013, 07:47:16 AM »

what do you guys go with, a short ignition spike at minimum load? no cats in my car
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adeyspec
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« Reply #5 on: April 30, 2013, 10:24:02 AM »

KFZWMN is minimum ignition angle so im thinking along the lines of adjusting it in there and then KFZW to give some ignition retard where the map would be reading on closed throttle run down? am i along the right lines or miles off?
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Robson
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« Reply #6 on: May 01, 2013, 03:50:15 AM »

KFNWEGEM  and KFTVSA  could possible add to some flaming action , coupled with Rabbids suggestion makes for some pretty angry over run if your not the fuel efficient type  Grin
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adeyspec
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« Reply #7 on: May 01, 2013, 10:25:43 AM »

havent got them or what they do in my definition, do you have locations and info? s4 mbox?
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ddillenger
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« Reply #8 on: May 01, 2013, 10:46:24 AM »

If noone posts up in the meantime, I'll add them later.
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adeyspec
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« Reply #9 on: May 01, 2013, 11:23:30 AM »

cheers
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black
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« Reply #10 on: May 01, 2013, 11:50:40 AM »

KFNWEGM one E to much
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ddillenger
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« Reply #11 on: May 01, 2013, 12:13:40 PM »

KFNWEGM 0x199AA factor 40*x
KFTVSA 0x199D2 factor .010*x
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phila_dot
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« Reply #12 on: May 01, 2013, 12:25:52 PM »

I don't get it...

Novelty?
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ddillenger
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« Reply #13 on: May 01, 2013, 12:27:50 PM »

I was under the impression they were trying to eliminate the flames.

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adeyspec
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« Reply #14 on: May 01, 2013, 09:05:41 PM »

Oh no just for the novelty of it, I've seen it done so questioned why it happens and now want to put it into practice
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