Tunning box for 2007 GL 320
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e39 540, GL 320CDI, 75 Porsche 914 2.0
Tunning box for 2007 GL 320
I am considering purchasing a tunning box form my GL diesel. There are now several brands on the market. Kleemann, Bully Dog, TDC and I am sure others(Carlsson and Brabus don't appear to be available in North America) Could you give me some guidance as to what brand(s) I should consider. I do understand that I do not want one that increases rail pressure. Any help would be much appreciated.