i am a bit confused, on the american website´s you can everywhere read that the prefacelift have stock boost of 6/7 psi and the facelift z31 only have 4/5 psi ...
BUT i got in my stock facelift 89 Z31 (EU-model) 6/7psi ....
also i found out that the pov will open at 8psi, and in the eu-fast you can find only one part number for all Z with this one valve, and in the us-fast 2 different partnumbers for (pre-)facelift model´s .. does someone have more clearly true comparison between us and eu models ?
engine ecu and cam´s is also not the same
BUT i got in my stock facelift 89 Z31 (EU-model) 6/7psi ....
also i found out that the pov will open at 8psi, and in the eu-fast you can find only one part number for all Z with this one valve, and in the us-fast 2 different partnumbers for (pre-)facelift model´s .. does someone have more clearly true comparison between us and eu models ?
engine ecu and cam´s is also not the same
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