FAST Throttle Body
TECH Fanatic
Joined: Jun 2011
Posts: 1,343
Likes: 8
From: Katy, TX
"FAST™ also invested significant testing & engineering resources into optimizing cross-sectional flow and eliminating airflow turbulence, especially at part throttle operation"
http://www.coloradospeed.com/fast-bi...y-p-10115.html
Teching In
Joined: Apr 2025
Posts: 1
Likes: 0
I'd do the FAST over the NW in the 102.
102s have low-speed problems due to the amount of air they let in. You can tune around it for low-speed driving and idle, but the problem is the amount of air goes from nothing to a lot very quickly with just a very small amount of throttle. That fine tuning is very tough to get perfect. But that's why when you crack the throttle... it's damn near instantaneous throttle response.
FAST actually created an area of turbulence at the bottom of the TB that slows the air down when the blade is partially cracked. This allows for fine tunability of low speed and idle air characteristics.
That will save you or your tuner a lot of time on the tune and ultimately make the car behave much more like stock with the added bonus of excellent tip-in throttle response.
Here is a pic of it on my FAST TB.
102s have low-speed problems due to the amount of air they let in. You can tune around it for low-speed driving and idle, but the problem is the amount of air goes from nothing to a lot very quickly with just a very small amount of throttle. That fine tuning is very tough to get perfect. But that's why when you crack the throttle... it's damn near instantaneous throttle response.
FAST actually created an area of turbulence at the bottom of the TB that slows the air down when the blade is partially cracked. This allows for fine tunability of low speed and idle air characteristics.
That will save you or your tuner a lot of time on the tune and ultimately make the car behave much more like stock with the added bonus of excellent tip-in throttle response.
Here is a pic of it on my FAST TB.
