He said don't use any water. Straight 70% isopropyl. No problems so far. My main reason for getting it tuned at SZ is MWS forgot to set a top speed value on their custom tune so it is governed at a top speed of 100mph. Also I have a slight backfire when I let of the gas in high RPM's but from what I have read that is common for BOV's. Also there is no other Z shop I trust more than SZ and would like them to go through the car fix any issues that need attention and give me the most aggressive tune while still staying in the safe zone with this 91 oct piss water we have in cali. Another reason I was asking about the 100 octane tune but perhaps I should wait on that until the stock turbos go out and I upgrade.
