So the TPS in my 03 Z took a dump and it looks like I need to replace my throttle body.

I've been looking at the NWP 75MM TB which claims a 15HP gain over the stock TB, and from most of the topics I've seen, the drivers claim to feel an increase in power. However, someone posted this before/after dyno that concerns me a bit.



The dump off after 5k rpms concerns me a bit (although it was also present with the stock TB, so maybe there was something else going on).

I was just wondering if anybody had any more recent before/after dyno charts, or opinions on this TB.

More importantly, I need to know if you guys think it's worth buying this TB, or just going with a remanufactured one.

Thanks.

 

How did your TPS fail? It is a very basic system. Have you bench tested the TB ?

 

From a cursory glance at that sheet, it looks like the numbers in the chart are wrong in regards to the 75mm TB. According to that chart, the stock TB makes more power than the 75mm TB. What the hell?

I would stick with the stock TB and keep it clean.

 

its not worth it. get a reman

 

Its pure snake oil. Look up individuals that actually installed it. If your going to do a larger throttle body, 80-85mm would be ideal along with custom/matched intake. BUT, this is only beneficial with cams/headers. Its not a bolt on mod and if you use it as such you will be severely disappointed.