NefMoto

Hello I have installed a throttle body of a 3 inch audi s4,

just by turning on the car I get the error

17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)

if I modify the KFVPDKLD table to 100% all data more, the error disappears,

Is this okay? ???

Why did you change throttle bodies?

I hurt myself. I got that and I like it more as it looks

here it is

you replaced the tb because it looks nice but you have no idea how to tune for it.

makes sense.

did you try this?
http://nefariousmotorsports.com/forum/index.php?action=search2

good was what I got. and I have to learn, nobody is born learned. final I do not stick one with you apologize I hope someone can help me out

yes. Thank you. but I could not find anything related

It is a lot of work for zero gain. Go back to stock.
OEMs have a flow bench to do the mapping. You (presumably) do not.

I have very clear 0 profit of something. but I would like to keep it. and I have time with the installed working without inconvenience. but I do not know if the correct form is with the map that I said earlier that making that modification I do not get the error. and of not being correct in what can affect me. if you are so kind to respond to my doubts. again thanks for answering

Copy KFWDKMSN and KFMSNWDK from S4 bin to your bin.
Then you need to adjust WDKUGDN - make WOT pull and adjust until mshfm_w is roughly equal to msdk_w.

thanks friend. I will get into it and keep you informed thanks for your response

I put the configuration of the s4   KFWDKMSN and KFMSNWDK to my bin and put stock kfm and the error returns with just turning on the car.

17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)


when you raise KFVPDKLD. the error does not come out anymore. But I do not know if it should be touched for that

quote from"hammersword" for the 17705 bug :

"If you don't want to deactivate leak diagnosis you can set it to start from 1500RPM instead of 750 stock"

Maybe you should try this ^^.

Where is the value changed?

Quote from: hammersword on December 22, 2010, 08:41:43 PM
The solution is easy, it is a classic fault on some 1.8T versions! On cold start you will have that issue!

You have change the leak diagnosis or by deactivating at all, or you can start leak diagnosis at higher RPM from cold start,

So if cold start is at 1300rpm, you can start leak diagnosis at 1400 rpm and the problem solved!

very easy
Smiley

It has nothing to do with boost deviation, it is a leak diagnosis bug

By tweaking FVPDKLDUS or by setting all points to zero will stop the  17705 fault code and stop the limp mode that comes with it.

hello, use FVPDKLDUS to zero and the same just start the car the error dtc :( I do not know what else to do

PRJ I have been following this thread trying to help jjuuaannk. I made a simple spreadsheet in my effort to understand how to modify this maps for the proper adjustment for a bigger TB. Looking at 1.8T 180HP & 1.8T 225HP related maps, I mean KFWDKMSN and KFMSNWDK, I find a relation between those maps in terms of TB diameter. But if I compare 2.7T indicated ones, values are really way off the pattern I can find the 1.8T maps, including axis too. We proceed as you indicate but at first engine startup AFR goes very rich around 10.9 at idle.

I do not want to sound dumb, but is that behaviour normal until we adjust WDKUGDN? because we move a little those values looking for an improvement without to much luck.

 

I'm seriously thinking about getting a throttle body stock :-\