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The ECU will retard timing if IAT's get too hot even w/o a tune, my experience anyway. I too was trying to limit thermal stress, so my first mod before a tune was an ETS fmic to lower IAT's then the Dinan intake and oil cooler. Flamesuit on for mentioning the D word on this forum; good products though.
As others have mentioned LSD=#1 mod
Check out the suspension/brakes/track subforums
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2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, Koni/M3 susp, Apex Arc 8, Mich PSS
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