BM3 Multimap Tune

[f93_gc]

I hate to be that guy, but i just noticed on the BM3 multi map stage 2 tune the exhaust burbles tend to go away a lot more frequently now. Is it because of my ethanol mixture (~80-85%)? When i ran normal pump gas it would also go away after a while but it seems on flex fuel it goes away quicker? Don’t know if it’s just a safety measure in place to prevent some stuff.

[TopJimmy]

Try without cold start. E85 doesn't need cats heated up anyway. If startup roar is on try without that too.

[hellokitty]

Originally Posted by f82_boi

I hate to be that guy, but i just noticed on the BM3 multi map stage 2 tune the exhaust burbles tend to go away a lot more frequently now. Is it because of my ethanol mixture (~80-85%)? When i ran normal pump gas it would also go away after a while but it seems on flex fuel it goes away quicker? Don’t know if it’s just a safety measure in place to prevent some stuff.

Burbles will be louder on pump gas than on alcohol. That's the one thing I noticed

[TideMD]

Originally Posted by hellokitty

Burbles will be louder on pump gas than on alcohol. That's the one thing I noticed

Yes, it's rather embarrassing when I swap over to 93 after running full E85 for a while. Those perfectly mild, but present, little grumbles suddenly turn into a full-on popcorn show.