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      11-06-2012, 12:54 AM   #7
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Drives: 07335i
Join Date: Dec 2008
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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.

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