[QUOTE=GraphiteG37S;908918]I say definitely do it if your tuner is comfortable with it, and if it is available in your area... and you should make one for 100 octane too...
I'm pretty sure my tuner is running two separate maps in his 370zTT... 91 and 100 octane...
MAC was doing pretty much the same thing on the Supra that I posted pics of. I believe that they were doing an E85 tune as well as 91 and racing fuel.
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2008 G37s 5AT, Stillen SC, Stillen CBE, Stillen tranny cooler, DBA 5000 front/4000 rear, Stillen sways, Tein SS-P coilovers, SPC front & rear control arms, Goodridge lines
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