Quote:
Originally Posted by Hoosiers
No, I'm asking what the DISadvantages are.
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Rougher idle, hard on the fuel system. Ironically you can clean carbon from the valves by driving at WOT. Toyota made a workaround by using both direct and port injection on some of their engines. It has proven to be effective in the IS350 at least.
http://www.thetruthaboutcars.com/201...in-a-nutshell/