I have a 04 SS 350Z 5AT, stock. Lately its been much slower than usual. Every day during a red light, I check the speed by flooring on the gas pedal while on AT mode, and it feels slow. I switch it over the tiptronic mode still feels slow. Does the dealer do dyno runs, or do you guys know anyone in socal that does them? Is it the ECU, transmission, gas, tires... what do you guys think? Thanks

 

Maybe you and Carlos have Twins!

Since you went into great detail, I would say its definately the air pressure!

https://my350z.com/forum/maintenance-and-repair/174017-slow-z.html

 

Thanks for your response. Do you know how I can fix the air pressure? Should I take it to the dealer or a local tune shop? Thanks

 

Take it to the dealer and give them your CC#

 

Hope that CC# doesnt mean credit card number does it?

 

maybe you put on a few pounds during the holidays?

 

I would check the headlight fluid ..might be low

 

grab your *****, jerk it 3 times while yelling 'WOOOOWOOOOO'

 

once you get use to the Z is does feel slow but drive another car for a while and then get back in the Z and if magicly feels fast again.

 

Maybe your fuel injectors need to get cleaned out or your spark plugs are fouled...

you could try one of those gas additives to de-gunk your engine...?

 

You know what Mike at 80k miles I wonder if that is something I should do

 

WTF your Z is really at 80k>??

Or the SX?

As far as spark plugs go... aren't they pretty cheap? Maybe you could just replace them anyway at 80k... *shrugs*

 

The 350z is 80k and the 240 was sold....also like Davo O from sports magazine stated " Folks who see Ed's mint Condition 03 Lemans Sunset Z often mistake it for new " - Sport Z magazine's Winter 06 Plenum shootout pg 45

 

Crumby gas? Someone put 87 in high octane tank or something?

ECU might adjust for that with anti-knock and then sluggish performance would ensue.

 

i'm sorry am i missing something. you check your speed by flooring it DURING a red light?

 

Did you buy your car brand new? Is your VDC/TCS on?

 

when the weather is hot our car seems little feel slow

 

The Z was bought used at 22k milage. The TCS is always on. I weigh at 145 lbs, no major gains. I use 89 cheveron gas. I floor it to see if it can compare the car next to me, and a celica and integra beat me. I drive to work 5AM so the weather is rather cold, I get back home at 3PM which is warm-hot temperature. I drove my parents cars, 98 camry and 04 accord, which felt near same speed as my Z. What is a headlight fluid? Should I get the air filter replaced?

I'm taking it to duarte performance nissan on wednesday. Check for possible tire feathering, interior rattles and rear axels click, and the mysterios power loss. Thanks for your supports.

 

trade it in on a base sentra.

 

I was going for rx8, mr2 spyder, or scion tc.
s2000, lanevo, sti are out of my budget.