Thread: Cold Issue

My VVL map is only 3 bar.

So I turned my dist. trying to see if it made a difference. Fully foward and the backfire through intake was totally gone but I didn't have a timing like to see where it was at. Now as I turned it back to center it slowly started getting worse and worse with backfires through the intake, all the way retarded and it does a big ol POP through the intake. Something is screwy and I'm lost. Really starting to think something internal :/

Could I be off a tooth on the timing chain and causing this? I usually think that it won't run right at all like that, but turning the dist like that and it fixing it just seems to good.

lol hey my jwt program does this too when its cold and im on a 3-bar msd program

I don't think the jwt programmed ecus have a cold map

Im getting my calum back tomorrow. I will see if it changes.

I think the car will be with the tune you left on the nistune, I will take the RT up there tomorrow. Thanks again for the tune!!!

hmm i remember when i still had the jwt 370 3bar stock maf program it ran fine cold maybe the high hp programs do not have a cold map

Installed my calum. Still does it but not nearly as bad as with the jwt. think something else is to blame here. guess time to check the timing.

I don't get any intake backfires (that I've noticed), but my car runs like complete crap until it warms up just a hair. Once the needle starts moving its fine, but until then I have no power until about 3k. I have a Calum basic and I am 4bar, but I had it when I was 3bar as well.

If turning your distributor further advanced improves it, then I would just bump up your timing on the Timing Advance - Normal table (assuming its named the same thing on the B14 XDF). That is interesting though that it helped, I may have to try this on my car tomorrow...

Knowing that that part of the map is controllable, that is probably the difference in those ECU's. Your Calum tune may have a bit more timing advance vs water temp in the colder areas. They all level out once they are warm because there should be no additional advance once fully warm.