what' a GIAC ecu?
You should call Mark at Hergesheimer Motorsports 949 458 7223. He has a program for the GT2 and TT that re-flashes your memory without having to dismantle / remove / solder your exsisting ECU. He just plugs his laptop into your data port, flashes the new program - that's it. Plus it comes with a control box that you can plug in yourself and select different programs (valet, 91 octane, 93, 100 or factory stock settings). My car not only runs stronger, but is smoother and seems to run better.
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vividracing
991 Turbo
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Oct 2, 2015 02:23 PM




