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adam-
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« on: November 03, 2014, 02:04:19 PM »
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I'm childish and I like things like this, so, how do you do it?
KFNWEGM - what is this? It's Gear number and temp, but what are the units? Target RPM?
KFTVSA?
KFVAKL?
KFZWMN?
Anything else?
The JCW Mini does it, how do we make ours do it?!
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contrast
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« Reply #1 on: November 03, 2014, 03:56:42 PM »
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KFNWEGM is like a threshold for fuelcut. When rpms drop, fuelcut is disabled from this value downwards. So if you want gargles and pops for the entire rpm range and all gears, set it higher than your rpm limit for example.
KFTVSA is the time in seconds i think before fuelcut is activated. But its active only when clutch is depressed. At least thats how ive seen it work on Volvos.
If you want bangs between shifts, lower KFZWMN in the lower load parts.
Sorry my english... (:
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mbkr89
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« Reply #2 on: November 04, 2014, 02:39:32 AM »
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The JCW Mini does it, how do we make ours do it?!
I would also like to know |
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nyet
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« Reply #3 on: November 04, 2014, 10:21:38 AM »
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I would also like to know
The post RIGHT ABOVE YOURS explains it. [edit] Summary: CWSAWE : 1 (check FR this is ECU specific) KFZWMN: -20 to -30 KFZWOP: first row -20 from original value KFZW/KFZW2: match KFZWOP in changed areas KFTVSA: duration (e.g) 2.55 sec KFTVSAKAT: similar to above Will add to s4 wiki time permitting. See rest of thread for more details. |
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« Last Edit: June 19, 2020, 08:56:39 AM by nyet »
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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mbkr89
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« Reply #4 on: November 04, 2014, 10:23:28 AM »
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it doesn't work  |
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adam-
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« Reply #5 on: November 04, 2014, 10:56:08 AM »
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It is working, but it's not that aggressive.
I've flatted the whole minimum ignition angle to -96, and it gargles all day.
Once its really hot it seems to do it really well, but I think I need a louder backbox; as its pretty quiet.
It's better, though.
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contrast
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« Reply #6 on: November 04, 2014, 11:57:17 AM »
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-96 is too much imo. Try -35 to 40 or so. I guess this is vehicle dependant.
As for louder bigger bangs you need to keep in mind that for an explosion you need both fuel and air. Fuel is sorted since you disabled the fuelcut, but you need a way to have some fresh air in the exhaust pipe as well. Deacceleration maps for enrichment and and enleanment are the ones for that i think.
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contrast
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« Reply #7 on: November 04, 2014, 11:59:36 AM »
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I should add that stock catbacks and downpipes dont give the desired effect as good as a louder catback and catless downpipes
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dayofthejackal
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« Reply #8 on: November 04, 2014, 12:05:52 PM »
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I've got KFTVSA set to 0.8 second between 1K- 2K and 2.8 seconds between 2K and 4K and set from 60c KFTVSAKAT set to 1 second between 1K- 2K and 3 seconds between 2K and 4K KFZWMN set to -48 between 1K and 3.25K It pops/bangs loud and deep between gear changes, even if accelerating slowly and gargles on lift off, but never noticed flames yet, unlike over 4K the NLS kicks in and turns the exhaust into a flame thrower.
KFTVSA is the time in seconds i think before fuelcut is activated. But its active only when clutch is depressed. At least thats how ive seen it work on Volvos.
That explains why I don't get bangs when I just lift off in gear There a EVO a keep seeing locally and it bangs and flames on gear change and lift off, it's loud. |
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DotJ Tuned - Look in HEX for DayoftheJackal
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adam-
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« Reply #9 on: November 04, 2014, 12:10:07 PM »
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Brought my KFZWMN back down so -50, will go flash and see how that is!  |
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Lyonz
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« Reply #10 on: November 04, 2014, 12:13:48 PM »
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adam-
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« Reply #11 on: November 04, 2014, 12:21:02 PM »
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Changed mine already! |
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edgy
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« Reply #12 on: November 04, 2014, 02:35:23 PM »
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None of these maps are defined for the ecu I really want to do this to  |
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2002 S4 full stg 3
2001 S4 stg 2
2001 TT 225 stg 2
1988 80q 4.2
2005 A4 (the wife's)
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TijnCU
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flying brick
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« Reply #13 on: November 04, 2014, 04:00:10 PM »
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If you disable the fuel cutoff it should already work i guess? The retarded ignition during deccelaration will cause your noise. I had it all the time on my first gen lpg car, no fuel cut on those systems.
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seishuku
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« Reply #14 on: November 04, 2014, 07:59:11 PM »
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I hope you guys aren't doing this with cats in place... It's a fast track to catalyst melt down. Also a good way to explode a muffler... Ask me how I know! lol
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