Go Fast Bits Respons TMS Adjustable Bias Venting Diverter Valve- BOV T9033 - 33mm
Respons TMS Universal (33mm inlet- 33mm outlet) Blow off valve or BOV with GFB TMS advantage. Patented adjustable venting bias system diverter valve.
How GFB?s patented venting bias adjustment works
Twisting the adjusting ring opens up the atmosphere port, whilst the recirc port is simultaneously closed.
This results in possible venting ratios ranging from 100% recirc, right through to 100% atmosphere and anywhere in between.
?I thought venting to atmosphere couldn?t be done on a car with an airflow meter, so how does the Respons do it??
We?ve all heard the stories and seen people get shot down on forums when they ask about BOVs. Common responses are ?your car will stall,backfire, run rich, go slower, or rip a hole in the space-time continuum that will bring about the end of the universe?. Certainly, if the BOV is not designed or adjusted correctly, at least some of these may be true.
When you vent a BOV to atmosphere, you?re letting air out of the system that has been measured by the airflow meter, so the ECU will continue to inject fuel for that missing air, hence the issues with over-fueling that can occur.
However, by controlling HOW MUCH the valve vents, WHEN it vents, and for HOW LONG, the Respons can be configured to vent a portion of air to atmosphere at a time and of a volume that least affects the fueling to the point where there are no negative side-effects.
Since our competitors do not have a means for adjusting the amount of air that is vented to atmosphere, they are unable to achieve the same success that a Respons does on even the most sensitive engines.
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