I picked ESS. I should have dynos for ya within two weeks.
I've been very pleased with customer support, car drives more smoothly than stock, and it was an absolute bargain... pretty hard deal to beat IMHO.
If you want a custom tune, the LET might now be a bad option.
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'08 Black Saphire/Black Z4 M Coupe
RIP Gretta: Blue Water/Lemon 135i. Died to save me.
-ChuckV
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