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View Full Version : custom e38 os



thelsxguy
February 21st, 2016, 05:35 PM
Hi Everyone .

I've been a Duramax guy forever! Have had efilive DPS5 on for years Love it!

I was wondering if anyone can point me in the right direction , for an E38 custom OS tune for LS7, so I can enable valet mode to make it a have 2 step. I've seen it here in California. Just not sure who supplied the tuning.

Thanks in advance