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Please note these springs are for the F82 M4 coupe
the Bull-X downpipe is for those looking to make the most power
The pads go on top of the rear rubber pad
If you are looking to correct reverse rake on your F8X chassis M3/M4
we have developed what we feel is the best lowering spring option for those wishing to utilize factory dampers
Porsche Macan S GIAC Performance ECU Software Upgrade Add Overnight Return Shipping::No Please note these springs areGIAC software for the Porsche Macan S is now available! This is a true ECU upgrade for the Porsche Macan, as opposed to a piggy back upgrade (using false signals to control ECU outputs). With a piggy back upgrade, you will typically miss out on an extra 30 40 wheel horsepower when compared to a true software flash. GIAC performance software gives you power gains of: 35 wheel horsepower and 110 wheel torque on 91 octane *Higher power gains will be
