has anyone done a throttle body upgrade? if so which one, and was it worth it?

 

Just like its MAF, Nissan designs for minimal TB restriction at WOT max rpms.
Typical restrictions run less than 7" water column...........1/4 of a psi for each. [[NOT 100% additive]]. Unlikely that the entire air tract from outside thru everything to plenum has even 14" water column restriction.

For the past 8 years, manufacturers have utilized the 25" water column standard as this is what is used on a flow bench to measure the cylinder head restrictions.

Gaining a HP or 2 might be achievable at the risk of some downside in transistional smoothness or fuel mileage at the optimized 55-65 mph range [due to changed resonances in intake tract].

Drive by wire TB are expensive and finely tuned pieces of equipment.

 

q45tech

thanks for the info

 

LOL. For people who don't know exactly what language you're speaking, sure sounds friggen hilarious. I know you know what your talking about though, that's what matters.

 

For those that need help understanding may I suggest this web site

Glad to see you back around and posting again Q45tech.

The man loves his manometers!

 

350EVO offers a bored out OEM TB, but I would personally try to ECU from Technosquare as the problem is not with the TB, but with it closing prematurely towards redline.