Tuned EPROM chip for installation into a socketed 8-bit Z32 ECU.   Fits 1990-94 TT and 1990-93 NA socketed Z32 ECUs. 

If you've already purchased a Z1 ECU upgrade (socketed and chipped) and have performed modifications that require the use of an additional EPROM upgrade the cost is $50. 

NOTE: All of our off-the-shelf tunes/chips are for running on GASOLINE only!

Option for NA to TT conversion is for FULL twin turbo conversions! This does not apply to twin turbo's installed on a non-turbo engine, this will require custom dyno tuning!