What do you guys change on these cars for maintenance ? Plugs , air and gas filter, what else on a 03? What brands and also on the intake spacers what size gives the best performance?

 

Plugs, fuel filter, air filter is about all you can do. As for a spacer, the 5/16" seems to offer the best gains, even over the 1/2". Don't bother with a Cold Air intake, no gains to be had, just noise. Best bet is find a "Rev-Up" air box (2005-2007) with the built in "velocity stack". You can prob find one cheap on CL or in the classifieds here.

Tex

 

Yeah i figured thats all i can do. Is there any sensors i should start changing ? I have 120 k miles

 

I wouldn't think so, just the O2 if it's throwing the proper code for it. If you run good gas, like I do, I have 130K with only one CEL and that was for a temp sensor in the gas tank.

 

Motordyne's 5/16" spacer is the most popular. Installing the 1/2" you lose the ability to use the engine cover and the hp comes in at higher rpm. Nissan's maintenance schedule or tune up as you called it is all fluids/filters every 30K miles and plugs at 100K miles. I suggest replacing belts at the interval too and plugs more frequently...Gary

 

Yeah, I forgot about that. I change my brake fluid every year. trans at 60-70K along with the diff. Never changed the power steering fluid, I need to do that. Belts AND hoses. I did that at 75K.

 

Every 2 years is fine...

 

Yeah, I know, but participation in the Raging Bull Texas Stampede requires it.

 

Tex, how often have you changed your fuel filter?
Gary

 

Never, if it's in the tank, it's nothing more than a SS screen and really doesn't need changing.

 

We knew that but this is what you posted.
Gary

 

Yeah, I didn't know it was in the tank, so...


I do believe YOU were a little green at this at one time also:

https://g35driver.com/forums/g35-cou...ml#post3717027

 

Tex, I only knew the answer because I asked the question 11 months ago! Knowing it wasn't under the hood, couldn't find the answer using our Search. I made a thread asking where the fuel filter was hidden.
Gary