Question About Dump Valves

Yay or Nay to the dump valve whoosh?


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    21
Mar 9, 2020
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I’ve recently been looking at the Forge Motorsport Dump Valve for my Leon 1.4 TSI. While many don’t like the sound, I personally think it’s pretty cool.

However, I wanted to know if installing this could damage the engine due to the air being released rather than recirculated (I’m assuming)?
 

paddy6789

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Aug 31, 2016
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Preston, Lancs
I have the GFB DVX on my car and it does let off a nice woosh noise, but nothing massively over the top like you hear on some Fiesta's.
 

paddy6789

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Aug 31, 2016
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Preston, Lancs
Did you buy yours direct from the manufacturers?
I bought my GFB DVX from Progressive Parts - they are a reseller for GFB parts :)

I’ve had the GFB DV+ on my last Cupra which was a diverter valve ‘Upgrade’ as it claimed. Had positive results with it. No issues. Some timers don’t like them though due to not really being able to allow/account for how they behave.

The DVX is a blow off valve - I’ve not noticed any difference in performance as such, positively or negatively. It’s obviously a much louder atmospheric air dump than from the DV+, which is still louder than stock.
 

Mr Pig

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Jun 17, 2015
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On a high performance car, like a Skyline or Impreza, it's kinda in keeping but on a 1.4 Leon? Sorry, just makes you look like a ******.