Motec M800 Tuning Problem

[tricstar]

gtr's been in at the tuners for 2 weeks and I think they are stumped... they showed me some data logging and at WOT the line zig zags up and down about 300rpm and constantly adjusting timing like its getting a dodgy signal but can't any... one theory is noise from unshielded wire ( not keen on that one as all I've done is change turbos and wire up stereo, which they don't think could be related ) they're at the stage now where they're about to pull the whole wiring harness out to check all the wiring??

theory 2 maybe corrupted software on the motec... so their fix is to maybe wipe software and reinstall ,, then have to start from scratch with whole tune ???

is there anybody who has had anything similar to this with a Motec M800??.. I realise this is probably a bit vague but thats about as much as I understand

we're waiting to hear back from Motec at this point, but any help would be great.

[Ryan1200]

http://www.motec.com.au/forum/index.php?si...8fbe0613d4d47ad

Might pay to ask the question on the motec forum aswell.. Good luck with it..

[Walk510]

http://www.motec.com.au/forum/viewtopic.ph...issan+gtr#p3089

http://blog.rossperformanceparts.com/new-c...san-rb-engines/

Edited August 5, 2010 by Walk510

[blitzxtr]

yes, 24 slot trigger disc mounted in the factory cas fixes it. The motec looses the signal when the 360 slot nissan one becomes a blur at high rpm. We had our own custom made and works a treat even at 11500rpm.

Edited August 5, 2010 by blitzxtr

[jonn]

Hey Richard, what workshop is looking at it?

[tricstar]

thanks for help guys, some of the symptoms on the motec site are the same and everyone seems to be pointing at the factory CAS not being up to the task...

Hi Jonn, its the same one you go to....I'm not on here to bag anyone, just thought I'd put it to the collective knowledge on here and it looks like they might have nailed it.... we'll see what the boys at the shop reckon about this tomorrow.

want to get the car the sorted, track days and night coming up soon, see you up there ?

[tricstar]

I really need to have more faith, the guys at the workshop found the problem and it turned out to be not good enough earths on a couple of sensors

thanks for the help anyway guys

[jonn]

Excellent. I was wondering which workshop as I know of another car in Perth with an M800 and they might have had some answers for you. Good to hear it's all sorted.

I'm not sure on more track days with my current car as it's up for sale but if no one comes up with the cash then I might sling some 1000cc injectors in it and retune. If I do that then I want to take it back to the track and have a blast.

Did I hear that your other car got pinched??