View Single Post
      11-06-2012, 12:54 AM   #7
BimmerPost Supporting Vendor

Drives: 07335i
Join Date: Dec 2008
Location: Earth

Posts: 14,582
iTrader: (86)

Originally Posted by bigbro6785 View Post
So I just installed catless downpipes over the weekend. I am running them with my JB4. I live in El Paso TX which is at 4000ft elevation and only has 91 octane fuel. So my question is, which map should I run? I was told that Map 5 (autotune) doesnt work good at my elevation, and Map 2 says it is for 93 octane. Should I stick to map 1? Any suggections? Thanks
I would do a datalog on map1 and map5, but let map5 adjust for a few days before logging. Send me the logs and we can see what works best for you.

Make sure to flash the latest firmware on your JB4 as well.

Mike is offline   Canada
Reply With Quote