Quote:
Originally Posted by bmwmick
So,
50 or 60 WHP for $1K or 100 WHP plus other nice features
for $500............I think I'd go for the JB4.
Do you get charged $100 each time you have to send the BMW code
in to be 'massaged'? That could get expensive if there were a few
DME updates from the factory.
Mick
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I looked at JB4 closely and was going to go that direction... until someone else noted that you have to remove the thing before going in to the dealer for scheduled service. Even if you don't the visible signs of "tampering" with the ECU enclosure can be visible. Also, with jumpers & harnesses etc, there is more of a chance of failure and even the bending or breaking of OEM components on the install and removal.
Ultimately it was the ease of use with the ESS unit that sold me. They have a very good reputation too.