i live in KC. there are a few shops to get a tune. if u have all wheel drive then options are limited. I can get u a good Dyno and tune in a place in topeka (bout an hour drive) from a nissan specialist. If u dont wanna go that far pm me and ill get u all the worthwile places and what i think of them.

 

So would I benefit more form a spacer or pelnum?

 

SPACER it's been said multiple times here haha. get a spacer, save up for a better quality exhaust, and/or get HFCs

 

I have test pipes(does any one know where to get the o2 simulator?) and what exhaust would you recommend?

 

get a coupe y-pipe.

 

you mean mid pipe

 

no I meant Y pipe. I already sold my mid pipe to a sedan guy. Still stuck with the Y-pipe

 

What would the y-pipe do? Would it make the sound different?

 

but theres no difference at all between a coupe y pipe and a sedan y pipe. Unless is an HR y pipe from a g37

 

the HR y pipe will make your exhaust a little louder and the car will feel smoother and more responsive

 

spacer and HR ypipe (350z hr)

 

^ and intake if sound is what you want

 

I have a z-tube with a pop charger already. Could you post a link for the HR y-pipe? And which spacer would you recommend? Motordyne?

 

search buddy!

 

The only thing that is beneficial from spacer over plenum is cost.

Using a Crawford/APS style plenum will result in very similar gains as a spacer... they do virtually the same thing (add volume for better air flow to front runners).

The entire reason MD spacer was designed was to be an economical and stealthy alternative to a deeper upper plenum.

Since MD came out, several other similar spacers have hit the market and many plenums are no longer.

So from a cost standpoint, a spacer is a better idea. If you can get a smokin' deal on a used plenum (if it's much less than a spacer), then it could be worthwhile.