If your car is still under warranty the dealer should be able to set the air/fuel mix to something more suited to your elevation. My REVO select plus lets me adjust the air/fuel mix. I think GIAC has a similar box. You may want to contact both of them. I was very dissapointed with the results of the ECU reprogramming. Get the exhaust and intake if you can afford it for the sound. It won't add loads of power.
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'03 Midnight Blue
18" Chromes//Drilled and slotted rotors//pedal upgrade//Alum. Door sills//KSPORT Coilovers//Short Shifter/Strut braces/Clear sides/Hard Top/Speedster humps/Intake//Leather GT3 seats/REVO chip with SPS2
'04 CLK55 AMG 367HP!
'86 944 Guards Red & MINT!
'69 911 Black
PCA Member -Northern Ohio
Cancer Survivor
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