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Tuner couldn't remap my car through OBD port, is this normal
Posted: Fri Dec 01, 2006 9:26 pm
by neckarsulm
Hello,
A certain up and coming tuning co. offered to remap my car as a demo but looked at the reg and went S reg, can't do it without removing ECU.
I advised him it was drive by wire and he had a go but confirmed his suspicions that it was impossible via the OBD port.
My question is, I have heard about MRC tuning cars via the OBD port, do they have some secret or can they only do this to cars that they have previously remapped with the ECU removed from the car?
Thanks.
RE: Tuner couldn
Posted: Fri Dec 01, 2006 9:44 pm
by MarkB
I'll be interested to hear the outcome of this...
RE: Tuner couldn
Posted: Fri Dec 01, 2006 10:09 pm
by GrahamS4
My car is S reg and the ECU was removed to map. The "real time" mapping was done on a substitute ECU with whatever the required interface already modified on it, the finished map then duplicated onto my ECU before refitting.
RE: Tuner couldn
Posted: Fri Dec 01, 2006 10:54 pm
by neckarsulm
was that MRC graham?
RE: Tuner couldn
Posted: Fri Dec 01, 2006 11:44 pm
by GrahamS4
It was.
RE: Tuner couldn
Posted: Fri Dec 01, 2006 11:49 pm
by ZeroK66
Yeha VERY early models I believe cant be mapped via ODB port.
Posted: Sat Dec 02, 2006 2:56 am
by Paulm
Yup Ecu needs to be removed. I think you may be able to do it if you disconnect the dash display, not 100% sure though.
Posted: Sat Dec 02, 2006 8:39 am
by jeffw
My car (Nov 99) was also remapped by MRC via the substitute ECU method...not sure MRC do serial port remaps.
Posted: Sat Dec 02, 2006 9:29 am
by neckarsulm
OK, thanks chaps, that answers my question.
I guess once the ECU is out, he wont need to open it like they used to do in the olden days!
I may as well go for it seeing as it's FOC then, I'll report back.
I'm a bit nervous about using someone who isn't an S4 specialist but their source of maps is quite reputable.
Posted: Sat Dec 02, 2006 10:54 am
by MarkB
If they want you as a demo surely they would like you to spread the word to who they are?
Also good for us if you let us know if they aren't so good
Posted: Sat Dec 02, 2006 1:23 pm
by jeffw
If your nervous then why are you doing it ? The damaged that could be visited on your car by a bad map is simply not worth the risk.
Posted: Sat Dec 02, 2006 2:34 pm
by MCB
If your nervous then why are you doing it?
Thinking that myself, sounds R&D to me and although you are probably getting a good price (B hope so), not wanting to put you off however are you so sure you will save in the long run?
Posted: Sat Dec 02, 2006 2:40 pm
by MCB
AWE Tuning have fitting instructions - download the PDF - on their website should help.
Posted: Sat Dec 02, 2006 2:41 pm
by MCB
Oops wrong thread to many open windows.......
Posted: Sat Dec 02, 2006 6:20 pm
by lobbers
my 1998 s4 wouldnt take the APR port programing however after taking it to dave massey (engine managment guru) at ADS in preston took the REVO remap eventually after reducing the data transfer baud rate