CartRemove itemThumbnail imageProductPriceQuantitySubtotal × PORSCHE CAYENNE 958 S / GTS 4.8L ECU Software Upgrade (SHIP IN ECU) $1,799.99 PORSCHE CAYENNE 958 S / GTS 4.8L ECU Software Upgrade (SHIP IN ECU) quantity $1,799.99 × PORSCHE CAYENNE 958.2 S / GTS 3.6L TT ECU Software Upgrade (SHIP IN ECU) $2,139.99 PORSCHE CAYENNE 958.2 S / GTS 3.6L TT ECU Software Upgrade (SHIP IN ECU) quantity $2,139.99 (incl. tax) Coupon: Apply coupon Update cart Cart totalsSubtotal$3,939.98 (incl. tax)Service / Financing / Processing$210.79Total$4,150.77 (includes $153.79 Tax)- Proceed to checkout