i was wondering if i needed a tune, or reflash. i'm going to rest my ecu after i install the plenum spacer and mrev2, but i am not sure that will suffice in conjunction with my other mods (exhaust and intake). here is the complete list:

nismo catback exhaust
motordyne mrev2
powerlab 3/8'' plenum spacer
hotchkis sway bars (probably doesnt affect ecu, but just in case)
KN intake.

these are all on an 06 rev up touring 350z 6spd mt.

the only thing i have not installed yet are the plenum spacer and mrev2. since these items are quite pricey, i want to know if i will have to spend more money to tune/reflash for optimal performance after the install.

i'm done with modding my 350z after these, so i would only need to tune/reflash once. i'm not going FI.

thanks.

 

If those will definitely be your last modifications, go ahead and do the reflash for the optimal performance.

You don't "have" to do it, but if you want to take full advantage of your modifications, you should.

 

Members with a tune post before and after dynos. Look at the results. Determine if the cost is worth the potential gain.

 

YES !
After all hardware mods you NEED a tune !

 

Well if you don't have stock Cat's or are planning on replacing the cat, then I'd wait.

If that's all you're doing? Then it wouldn't hurt.

 

I'd have all intake/exhaust related mods done first.

Rubidium, what is your torque #?

 

Never mind. I thought this was important. Important enough to say “thanks” or simply reply.