NWP big bore throttle body

[dragonh]

Hi all, Just wanted to know if anyone has installed the NWP 75mm big bore throttle body
kit and if so, what gains or issues did you get....I want to replace my TB soon and would
like to get a bigger bore TB....Any experiance or suggestions are welcome..tks all

 

[shadow191]

http://my350z.com/forum/intake-exhaust/580683-nwp-75mm-throttle-body.html


No proven gains on the 350Z which would be the same for us. It's bigger, but you also need to upgrade the MAF to a larger diameter and match the plenum inlet. Otherwise, a larger TB doesn't do anything since increasing the diameter in the middle of a straw while leaving the rest untouched means no more air flow. Company claims 12-15hp gains, but no 3rd party dyno has come close to that. Some guys with pretty heavily modded cars saw 5 hp and some saw small losses.

 

[StuLax18]

I think I gained 5 HP, but had TB issues.

MAF is 65mm right? If you were to get a bored TB, bigger MAF, and port upper and lower plenums then you would see some nice changes.

This guy does them as well, but being in Taiwan I'm not sure if it's feasible.

http://www.maxbore.com/