Don't listen to any of these people. Here is my input and my experience in the field. I'm a Nissan Tech. I help put these engine together so Im very familiar with vvel. Vvel is similar to vtech but it is better.

I also own a G37 and I didn't want to spend 1000s of dollar on a silly exhaust system. I went online and found these ecu chips on eBay for like 50 dollars! They work great and are a steal at the price. I could not imagine the gain on these. I went on a dyno and the gains showed +45 hp! The best part about the chip is I also gain 20+ mpg! I'm getting near 35mpg in city lol I spit on hybrids.

I went up against a fully bolt on g37 and took it by 2 car length hehe. More power for half the price is the way to go. I'm going to take on a GTM TT g37 after I get my car tuned with the mod chip

 

Yup, listen to the above post,

VVEL >

 

I've got that phone. Looks like I need to upgrade it to a VVEL phone.

 

 

screw it, i don't care anymore. going stillen supercharged. close thread. Thanks for the advice from people that had constructive stuff to say.

 

I had an inclination to close this thread straightaway, but resisted. I should have listened to my first instinct.