| 2.5 inch intercooler piping / MS turbo inlet piping / etc -- make sure you check your a/f at high boost before and after ..even if your Z has a custom tune -- making changes on the intake side will increase air flow via larger piping and / or turbos breathing more efficiently. This "optimization" of the system can make the Z run leaner on the top end and require more fuel. Just sharing some observations that I have seen over the years and reconfirmed with the recent install of my MS turbo inlet pipes. Just with the MS turbo inlet pipes ... my a/f on both banks switched from 11.5 to 12.2 @ 18psi ... furtunately I have water injection that lowers it by 1/2 point and w/Nistune this can be "tuned out". I'm not a tuner -- so my observations may not reflect / be accurate. Hence, my recommendation to check your a/f before and after before you boost.
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