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QUOTE (babi_boi @ Feb 10, 2009 - 11:16 PM)

>thanks for the info, i will do some homework and look into the stuff u said, i'll keep u posted
what about the oil? any suggestions on switching to fully synthetic
Oil isn't too big of a deal on our cars, I'm using full synthetic right now and not noticing any difference from the cheap Valvoline oil I used before other than being slightly cleaner, definitely wasn't worth like 4 times the cost. I'm going to try the Valvoline Maxlife Synthetic next, it's cheap and seems to be working well in my Maxima.
I think as long as you use a good filter like Wix and a name brand oil (none of the O'reilly's special or whatever) then you'll be just fine.
Oh and what injectors are you using? The cars tend to run rich already, bigger injectors would just be dumping un-needed fuel into the cylinders.