i already look for coilover, i just wait to see if my budget is ok :P

Coilover mean better look and handlind ? aything else ?

 

Search flyinglumpia's threads. He's the main mandingo on coilovers for awds.

 

Ha ha french canadian mmmmm ya those frenchies lol

 

You should be fine installing the Z tube and spacer yourself. These are fairly simple mods. Check these out:
https://g35driver.com/forums/engine-...all-guide.html

https://g35driver.com/forums/engine-...ic-others.html


As for the rev-up airbox, you can get it from Riverside Infiniti. Pm them or find it in their eBay store. Expect to pay a little less than $100 US. Sometimes you can find them in the Marketplace thread on here cheaper if you're patient.

 

Should i go for the z tube + rev-up airboxe with a K&N filter

or

Z-tube + JWT pop charger (i rode a lot of people re-switch to the original rev-up boxe)

I probably go for the frst one ! is it ok ?

thnx again for your answer !

 

rev up box or stillen intake. Whichever you find used first.

Same with the Z tube

I don't really like the K&N panel anymore. Better altneratives out there. It would require *gasp* searching though.

 

If you want to save some money, skip the z-tube for now. It doesn't really do much except make your car louder. There is a thread on this site about people putting their stock G-tube back on and liking the smoother power band and of course its quieter than when they had a z-tube. After reading that thread, I was convinced and haven't picked one up yet. I may be able to get one free though so I might just have to try it out to see if their claims are valid or not. I'm still up in the air about the spacer. I installed mine last night and my car is considerably slower than it was before the spacer. (butt dyno only so far) I'm thinking it has to do with the reset of the ECU as I disconnected the battery when installing it and haven't driven more than 4 or 5 miles with it on so far. I am hoping it gets better otherwise I wasted $240.

 

Which spacer did you install?

 

I installed the MD 5/16 copper spacer. I put over 30 miles on my car today and now it is a different car than it was last night. I guess it just took the ECU a while to adjust to the new parts. The car overall feels faster now but it also seems that there was a shift in the power band. It seems to make more power up higher in the revs but feels as though it makes a little less in the middle of the power band. It could also be the gas I am running. The gas station near my work does not sell 93 octane so I had to fill up with 91 the other day.

 

i thought the 5/16" are supposed to give lower end torque where as the 1/2" give you the higher end torque

 

That's what I thought too but my butt dyno feels differently about it.