Hi Brian,

The ECU Flash will help tie everything together and allow your engine to have the proper fuel & timing for bolt-ons. The ECU Flash between the different bolt-ons is very similar, the only NA upgrade that would use a different program are camshafts.

Once you have the AAM ECU Flash, upgrading to a different program typically only costs $195.00 - so you do not have to spend $595 each time

Here is another set of high-flow cats that works exceptionally well on the G35: http://www.alteredatmosphere.com/mm5..._Code=350Z_EXH

These are the best flowing high-flows for the 350Z & G35 becasue they are a true 2.5" stainless and use Metallic eliments which flow much better than the traditional Ceramic cats most people use.

Let us know if you have any other questions.

Hope this helps,

 

Thanks for the tuning Mike!

 

Godmans, I was out of town when this thing happened. How does you can feel now compare to before? From dyno numbers to seat-of-your-pants feel.

 

I picked up sth like 17 whp and 20 ft lbs of torque.

The gain is very noticeable up top (above 4.5k rpm) where the car used to die out very quickly; whereas the top end pull now is incredible.