SA58Junkie

Okay so I'm still pretty newb at the whole street tuning thing and have been running my NB2 on a blend of DIYAutotune and Brains maps and settings. The car runs pretty decent other than big dips in AFR anytime I lift the throttle. EGO does a pretty good job maintaining my AFR table when either constant steady cruising or in boost, but as soon as I lift the throttle in the slightest amount I can watch my AFRs take a big dive. This also results in quite a few exhaust backfires on decel. My main VE table seems to be pretty consistent whenever I run VE analyze/autotune so it leads me to believe the problem is in the enrichment settings. What specifically should I be adjusting to to correct this issue? Current tune attached.

Matt Cramer

Please also attach a data log. This will show how this tune is working in the real world.

Mudflap

I'm curious about this one as well. I don't get backfires, but I always see the drop in AFR. I've done a bunch of enrichment tuning (for tip in), but most everyone around here recommends leaving the negative tip in (deceleration) section at 0%.

I doubt your problem (backfiring) is an accel/decel enrichment problem. But could be solved by using it.

SA58Junkie

Hey Matt, I have attached a quick 5 min log. Just easy pulls and any time you see quick TPSdot changes in decel is me heal toe rev match down shifting. It did seem to be running kind of weird on that log. AFRs were pretty unstable and overall rich for some reason. Appreciate any help.

SA58Junkie

Dumb question, but I cannot seem to open or copy any MSQ or MSL attachments on this forum. What am I doing wrong? If I click the attachments it trys to open another tab or if I right click I do not get a copy or download option to select. I figure its something simple, but for the life of me cannot figure it out.

shuiend

iTrader: (24)

The forum is being stupid, IB knows and should be working on it.

SA58Junkie

Okay cool thanks Lars. Hope someone can take a look at my current tune and log files once that gets sorted out.