Hey guys, i have a 2012 G37x sedan and have modded it a little but want to know what my next steps/options are on the vehicle. This is what i have done so far:

1. Stillen Short Ram Intake
2. Stillen Full Exhaust
3. Stillen Headers
4. Hypertech Max Energy Sport power Programmer

So i don't know what to do next, i was thinking maybe high flow cats?
Many people have told me to get it tuned, but does anyone know any decent tune shops in NJ, and also what type of tune should i get?

Another question is how much gain will i see out if this?

 

Sell the hypertech programmer and get a real tune

 

Couldn't have said it better myself. Take the hfc $$ put it in your pocket and save the funds to do them with a tune

 

So are you saying to not get hfc or get them when i get the tune

 

Get them when you get a tune. I recommend the Fast Intentions Resonated High Flow Cats and Uprev Tune.

 

I vote Z1 HFC's less rasp than FIRHF'c, Yes I had them both. Z1's are over $100 less too

 

I'm new to the G so forgive me, but will Z1 HFC bolt up to FI catback exhaust?

I remember reading some exhaust parts won't bolt up to another exhaust brand. Maybe it was the headers to the HFC?

I have no idea

 

From their website:
Constructed with stainless tubing and 3/8" stainless flanges (converters are aluminized steel). Fully TIG welded and true mandrel bends used throughout. These converters will bolt up to any header (factory or aftermarket) and any exhaust (factory or aftermarket). These pipes also retain the factory Oxygen sensor location and WILL NOT THROW A CHECK ENGINE LIGHT!!.

https://www.z1motorsports.com/g37_37...oducts_id=4204

 

Is Z1 and kinetix the same brand?

I don't see Z1 HFC listed on the exhaust products page but I do see Kinetix & Berk Technology

 

No kinetix is a differnt brand . Not sure why the Z1's aren't there maybe they sold out ? I'd try calling them and see. I looked at Kinetix also they look like good cats also.

 

So what's your exhaust setup? Z1 HFC + ARK Grip exhaust? No headers?

 

This sounds a lot like what I want to do with my 2009 sedan. Did you do all 3 intake/exhaust mods in one go or spaced apart? Curious to know how your performance has improved, both now and after whichever tune you use. I'm wondering if it's worth doing it bit by bit, or if I should save for one go?