UMI Vs Nick Williams
Is there much, if any difference in the performance between these two throttle bodys?
How about reliability etc?
I havent managed to find much about the UMI with searching, so do many people own them?
I currently have a dodgy FAST 90 which doesnt quite shut right and even when I can get it to work ok by using a bungee cord to assist it still can only idle by maxing out the IAC.


