Hey Guys,

So I've had my 2003 350z for a few years and I kind of feel that it doesn't feel as powerful as it once did. Especially when I rev it out, where it used to pull hard to redline, it seems to not do that anymore or at least not in the way I remember - I could be concocting this, but I doubt it.

So what can I do to restore (or guarantee that I'm not loosing) performance in a 8 year old car.

Here's what I can think of:

• Change all sparkplugs
• Change the air filter
• Pop off the cold air intake piping and clean it out
• Clean out the throttle body
• Do a round of injector cleaner
• Oil and tranny fluid change to round things out (Mobil1)
• After all this, reset the ECU

What do you think? What big and obvious thing am I missing?


Thanks for looking,

 

Osiris tune

 

edward can make your Z feel like a beast again.

http://www.advancepowerhouse.com/


He's tuned lots of Z already.

 

when i had my 03 i ran some bg44k through it on top of doing all that stuff

 

your car should technically make MORE power than brand new if taken care of properly and it doesn't have high mileage. I know that Porsche engines start making peak power around 100k mark!

 

how many kms on it now?

 

100k kms

 

maintenance never hurts
I don't know about cleaning out the throttle body, if it needs it do it.

 

+1 on the osiris tune... i hit 100,00 a month ago, got new plugs, gates belts, all fluids changed, and the tune.. never felt more powerful

 

My clutch pedal is SUPER stiff I've also noticed.

Does that mean it needs replacing? Still grips hard, doesnt slip -

 

ever change clutch Fluid?

 

focus on all the service maintenance 1st. oil and fluids change.

engine gets limp after they were put aside for a while

 

Actually I havent! I'll add that to the list.