|
Title: getting rid of "warm up catalyst below efficiency" Post by: digitalhippie on September 03, 2014, 08:19:16 AM So I have this code on my 2001 Allroad 2.7T (551L base file):
16815 - Warm Up Catalyst; Bank 2 P0431 - 35-00 - Efficiency Below Threshold Reading the S4 tuning wiki, it says you can numb the sensitivity and possibly get rid of the code using the following - AHKATMN (0x18672) AHKATMX (0x18673) AHKATS (0x18674) But not much is said about how to change these values. I'm assuming these are 8bit scalars (since they are not defined in my XDF), does anyone know the conversion factor? Should I be adjusting these values up or down to reduce sensitivity? What's a good increment to adjust them in? Title: Re: getting rid of "warm up catalyst below efficiency" Post by: nyet on September 03, 2014, 08:50:30 AM You can always look at one of the fully defined defs (551G, 551F etc.) for this information:
http://files.s4wiki.com/defs/ Title: Re: getting rid of "warm up catalyst below efficiency" Post by: digitalhippie on September 03, 2014, 09:08:02 AM Ok, that answers half of the question. Thanks. I didn't realize the addresses would be the same for those files.
Any suggestions on how to adjust these values? Up, down? Suggested increments? Title: Re: getting rid of "warm up catalyst below efficiency" Post by: nyet on September 03, 2014, 09:11:43 AM Ok, that answers half of the question. Thanks. I didn't realize the addresses would be the same for those files. Not the addresses, those change. But the factor (and scalar bitwidth, etc.) is usually the same. Title: Re: getting rid of "warm up catalyst below efficiency" Post by: digitalhippie on September 03, 2014, 09:33:17 AM Gotcha, thank you
Title: Re: getting rid of "warm up catalyst below efficiency" Post by: digitalhippie on September 03, 2014, 10:40:04 AM I went ahead and cut the values in half... we'll see how that works
Title: Re: getting rid of "warm up catalyst below efficiency" Post by: ddillenger on September 03, 2014, 11:21:36 AM You went the wrong way.
Title: Re: getting rid of "warm up catalyst below efficiency" Post by: digitalhippie on September 03, 2014, 11:22:28 AM Dammit, figures... any suggested values to use?
Title: Re: getting rid of "warm up catalyst below efficiency" Post by: nyet on September 03, 2014, 11:24:10 AM Wouldn't it make sense to decrease MIN but increase MAX?
Disclaimer: I have not adjusted any of these parameters in my file. Title: Re: getting rid of "warm up catalyst below efficiency" Post by: digitalhippie on September 03, 2014, 11:27:53 AM If MN is min and MX is max...
What are S and SB? Title: Re: getting rid of "warm up catalyst below efficiency" Post by: ddillenger on September 03, 2014, 11:31:46 AM If MN is min and MX is max... What are S and SB? The sums of each sensor in a stereo system. MX, S, SB=FF I have never lowered MN. Title: Re: getting rid of "warm up catalyst below efficiency" Post by: digitalhippie on September 03, 2014, 11:33:30 AM Ok, then I'll max out MX, S, SB
Thanks for your help, again. Sorry I'm such a newb to this. Title: Re: getting rid of "warm up catalyst below efficiency" Post by: ddillenger on September 03, 2014, 11:37:40 AM I suggest reading the FR. My info is my interpretation. It might not always be correct.
Title: Re: getting rid of "warm up catalyst below efficiency" Post by: digitalhippie on September 03, 2014, 11:38:56 AM I definitely want to dig deeper and learn as much as I can, but right now it's just about getting the car running decent.
Title: Re: getting rid of "warm up catalyst below efficiency" Post by: digitalhippie on September 05, 2014, 12:24:43 PM Looks like that worked... warm-up cat code has not returned.
|