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u need an undertray, all that little stuff doesnt amount to much and probably cause more issues. hpde an e9x n54 fbo is a hott heavy mess. you need extra water and oil coolers and wmi injection for sure no matter the ic size. you kinda need it all, 1st wmi for iat (along with ic upgrade), then aux cooler or csf radiator upgrade, then oil cooler is usually how the heat builds up besides bbk/race pads also
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