i have a 2006 z sometimes it picks up fine when i am driving it but then sometimes it is to slow what could cause it, like the rpm shoots up fine sometimes but then its not that fast

 

hit the nos button brah

 

clutch

 

Wow thanks for all the details! Is your car modded and how? How many miles? What do you consider not that fast?

 

Mine's slower when I go uphill, faster when I go downhill. Something to do with gravity, I think.

 

Almost as many details in the post as there is in the title.
Terrible: F.

 

^^yes. threads like these annoy the shlt out of me (not that anyone cares what annoys me) but i can't stop myself from opening them. completely useless thread title, no useful details, and on top of that, no specific question is asked in the post. WTF is your question??? fail thread

 

turn off your vdc and see if it seems different

 

Turn off your traction control. You're having wheel spin and it's limiting your excelleration

 

My first thought as well.

 

U need more Nos

 

install a turbonator problem solved!

 

 

so i figured whats wrong with it when i thurn on my headlights its taking the power away from the engine. what i did was driving in second gear about 35mph gave it gas(while the head light was on) and it did not respond good the second i turned off my headlights it just took off
2006 350z 22k miles
6 speed no mods done

 

No Mods? sounds like you have aftermarket tail lights...

 

i do have after market head lights lol that can cause that

 

do you have aftermarket head lights (I'v never seen aftermarket headlights)?

do you have aftermarket tail lights?

if you have aftermarket tail lights, that is the cause of your problem. replace them with the OEM tail lights.

 

sorry i wanted to say tail lights lol. yea i have some after market tail lights so i am goin to switch them out to stock ones and you think that will fix the problem

 

it will fix the problem, There's been a few cases where the lights really mess up the way the ecu works.

 

do think if i get a bigger and stronger battery would that help