VF Engineering VFA01-01 Race Bypass Valve
The VF Engineering Race Bypass Valve is a direct
replacement for the Bosch valve as used on most German factory
built turbo automobiles eg VW Golf 1.8T / Audi
TT / Porsche 911 Twin Turbo. The Bosch valve is made
from plastic and contains a rubber diaphram which is actuated by
engine vacuum. The valve is used to release pre-throttle body
manifold pressure on deceleration.
The VF-Engineering Race Bypass Valve is made from
billet aluminum and can withstand higher boost pressures and the
higher charge temperatures. The OE Bosch valve is a
part that is prone to failure in stock applications and
particularly on chipped vehicles. Bosch have revised their valve
design several times but by using the VF-Engineering
valve you will have the assurance that once this valve is fitted,
it will not need to be replaced.
The VF Engineering Race Bypass Valve has been bench
flow tested and results show that it flows just over 10% more
capacity. The greater airflow capacity means that on aftermarket
and higher boost applications, air turbulence is reduced and the
possibility MAF turbulence is minimized.
- Direct replacement part 90 degree vacuum nipple also
- Very mild whistle sound on actuation
- Constructed from CNC machined 6061 billet