TunerPro User Forum

Anyone have a xdf for a S38B38 ECU number 412?

Bump.
Also need this. I have been looking for the rev limiter, and I found the following. Can anyone comment if this is correct?

According to here http://www.ecuconnections.com/forum/vie ... 1&p=105880 the rev limit is a 1 byte value located at 0x6954. I think this is almost correct.
0x6954 = 08
0x6955 = 07
According to the 402 (M50 BMW) example on http://www.motronic.ws/revlimit.htm this is a type 3 revlimit, with 16 bit word endian byte order, meaning:
0807h = 0708h = 1800dec -> divide by 4 = 450 rpm = wrong.
However, when you do 8 bit word endian byte order, we get:
0807h = 7080h = 28800dec -> divide by 4 = 7200 rpm = correct.

Can anyone confirm this?
Can someone please tell me how to deal with the checksum?

Another thing about the rev limit:
According to here http://www.ecuconnections.com/forum/vie ... f=6&t=3693
it is located at C822h 16 Bit. When I read the 412 chip, I find that it is a 32k chip (27C256), so it does not have an address C822h.

I hope it's ok to link to other forums, I just find the tunerpro forum is the best and I want to support some of my assumptions with sources.

Cheers
Stefan

it is correct

Thanks a lot. I will update this post when I find out more.

Any comment on the checksum?