Stillen Gt3 Intake, Berk Exhaust - what bolt on is next? (non FI)
 

So I know there are a bunch of views on this and many threads but I wasnt sure if my situation is unique so here it goes:

As stated I here
http://www.the370z.com/new-370z-owne...-included.html
I have a Stillen Gt3 Intake and Berk Exhaust - so my question is - what bold on mod can i do next to give me the next uptick in power - (and no I do not want forced induction) reason being is this is my daily driver. I live in Austin Texas and its hot and I am in a LOT of stop and go traffic for my daily commute. So again what can I do that will not effect reliability or fuel economy (well not that much)
-Tune?
-Manifold? (was at cars and coffee in houston and saw someone with a flat looking manifold - def a custom or aftermarket job - forget the name on it)
-Do the two go hand and hand - meaning if I get a new manifold is a tune pretty much required (in my experience yes)
-If so what brands and who to go to - (perhaps a custom dyno tune?) - but on the other hand I guess if I do either of these there goes the warranty - ( i did get a 5 year 100k mile warranty on the car. So if Nissan is anything like chevy if something goes REALLY bad - a tune F's everything.
-Do not really want headers - has Berk exhaust and it sounds PERFECT...so dont want to go louder.

Maybe I just answered my own question - ugh its late ...

Sorry if this a "newb" subject but I am just learning these cars and would very much like your input. Is a tune even worth it ? How much on average would it cost and what sort of power gains given exhaust and intake already...?

Sorry for so many "what abouts" .... want to make sure I cover all concerns.

My real goal is to get to 400 crank hp .... given my current mods how far off do you think I am ? Sorry may be worth another thread but just crossed my mind with what Im trying to do if it is possible.

Thanks guys as always:driving:

Well welcome, to get anywhere near there, IF you are LUCKY youll need a m370 INTAKE Manifold and TEST PIPES/HFC/ HEADERSAND finally an UPREV TUNE , you said that you don't want to make the car louder but 2 of the 3 things I stated that will get you to 400 crank (POSSIBLY) < Highly unlikely though will definitely make the car louder GL!

Your first mod should be getting an oil cooler, helps keep your oil temp down and your car running smoothly since you're in a hot climate.

After that I'd look into either some Berk high flow cats or test pipes to open up the exhaust some more which should yields you some extra hp. Then get it Uprev tune if you're still wanting more gains. You can check the tuning section for numbers with similar mods.

Ok Awesome - Im sensing Tune m370 manifold and high flow cats - I like it. So the car DOES have an oil cooler. I am not sure if that is part of the track pack etc but I visually verified it.

In terms of the the Uprev tune A)cost for tune and intake...B) does it totally void the warranty on the block and everything in the block? C) is the tune customized to my existing bolt ons or is it just a pre-existing tune some one throws on with a laptop - not that Im against that.

Agree on the HFC... And OMG I have a set used for sale