Good to know! (Delta and the Z4 feeling solid). I don't know the airtran guy. Have you thought about the re-flash for your z4? Sounds like an easy extra 100hp.
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Z1 intake tubes,K&N,sprint booster,side stripes,9500ix, blendmount,laser jammers,AVIC-X920BT,TS-C720PRS, PRS2200DT,2x BTA6250D,275/40/18 conti dw, dynamat,reversed the +/- on the floor shift,tint,cover
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