I am planning on cheking it with a light, but I don't know the specs on how 
do a VG30E.  The sentra as you know, you have to go through the process of 
holding the gas for 2 minutes, TPS removal, ect.  I dont have the maxima 
book.  I may get one from my uncle or just ask him for a photocopy of how to 
check it. properly.  It does have 70,000 on it and I am going to clean the 
EGR and other things on it.  I just tuned it up with a OEM cap and rotor and 
wires and plugs, replaced the fuel filter, replaced the PCV valve and that 
did not seem to solve any problems, but pinging won't be solved by that.  My 
uncle always says to run 89+ in the VG30 motors.  It doesn't ping any more 
with the High test either and it runs better.  Maybe the compression is 
higher in the maxima VG30.  I don't know.  My truck runs better with the 93 
octane, but gas prices go up and down and it costs me 20.00 to fill it with 
premium.  So I usually use 89 in it.  
                Thanks Chris D


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