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1hdft 3" exhaust upgrade

How about finishing the exhaust before the axle and having the tip turned downwards
Mine is a side exit and definatly my osr tyre gets hotter and the pressure increases. Only by a few C and couple of PSI. To solve i removed the TPS system...
Put a duel exit (one each side) in front of rear wheels like the G63 AMG then set both rear tyre pressures a couple of PSI lower. Obviously makes more sense on the v8 with 2 exhaust manifolds