[CubanJJ09]

Originally Posted by Sparkplug

I've been running a Dinan flash for over two years with no issues, no hassles with my dealer, no need to erase engine malfunction codes, no need to commit fraud, and with smooth responsive great performance.

The Dinan tune does much more than just jack up boost. Full access to the ECU has given engineers at Dinan the ability to improve many other engine control functions without having to override or trick the engine's safety parameters. For example, it drives the water propeller faster to create better cooling in the engine, since increasing boost adds to the heat problems from which these cars already suffer.

But it does come down to warranty. Since Dinan are prepared to guarantee that their products won't damage your engine, they take a more conservative and responsible approach to engine tuning. Remove that, and what the heck, might as well crank up boost to the max to the delight of the kiddies who mostly turn in their rentals after three years of abuse. Then it becomes someone else’s problem.

If you are outside the warranty period, I’d also give a company like GIAC a look since they have embarked upon the exercise in a comprehensive way, have a place of business other than their garage, and actually have engineers on their payroll. Dinan have a more extensive dealer network though and you’ll find them right in BMW dealerships.

thank god u typed that i was too lazy and was just gonna say "get dinan."

[Craig@SupremePower]

Originally Posted by Bimmer335i07

If you're set on a flash tune go with GIAC.

If you want my opinion, I say go with the JB3 2.0.



GL with whatever you go with. The N54s are a lot of fun with tunes.

+1..