Dump Valves
11 September 2008, 07:18 PM
#6
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I don't know mate - i have no idea what they do or how they affect stuff under the bonnet.
Im a complete idiot when it comes to technical stuff with cars.
Maybe the fuel consumption is just generally carp
Not that im complaining because every gallon is worth it !
Im a complete idiot when it comes to technical stuff with cars.
Maybe the fuel consumption is just generally carp
Not that im complaining because every gallon is worth it !
11 September 2008, 07:18 PM
#7
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They have a re-circulating air bypass valve as standard (the correct name). A 'dump valve' as described here is a VTA air bypass valve. The clue is in the description of the noise made...
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11 September 2008, 07:22 PM
#8
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I dunno but i think the one i have is loud and makes a whining noise as i accelerate then PSSSSHHHHH when i depress the clutch !
11 September 2008, 07:30 PM
#9
Basically, the ones fitted and recommended for Scoobs "dump" the metered air back into the system whereas the VTA, or vent-to-atmosphere type just dump the compressed air, so that the car fuels for more air than it receives, causing bore wash, poor fuel consumption, and possible cat damage.
Alcazar
Alcazar
11 September 2008, 07:35 PM
#13
Your car, your decision.
But before making it, ask yourself why NO respected tuners from Prodrive on down will recommend, or use a VTA d/v.
There's always someone who will tell you to "go for it, fit a vta, my car is OK", but it's not HIS car YOU need worry about.
If you do a search on here you'll find a few folk who have taken vta d/v's off and seen better running.
Alcazar
But before making it, ask yourself why NO respected tuners from Prodrive on down will recommend, or use a VTA d/v.
There's always someone who will tell you to "go for it, fit a vta, my car is OK", but it's not HIS car YOU need worry about.
If you do a search on here you'll find a few folk who have taken vta d/v's off and seen better running.
Alcazar
11 September 2008, 07:54 PM
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ive just got the standard valve out the shed and its closed on boost and open on vacuum??? i tought it was the same as a re-circulating dump valve.
adam
adam
11 September 2008, 07:56 PM
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I must admit,i fitted a baily to my last car,did nothing but made it run bad. Fitted a sard r2d2 to my RA for an hour,made it twitchy and too loud! Thats just my opinion.
11 September 2008, 08:31 PM
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I had a Turbsmart VTA on my car when I bought it, I replaced it with the OEM recirc valve and now have an uprated after market recirc valve. The VTA was by far the worst as not only did the noise get on my **** after a while but it also felt a but juddery when idling or in low revs.
11 September 2008, 08:48 PM
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11 September 2008, 09:52 PM
#27
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Ive got a 50/50 recirc and atmosphere turbosmart Valve and it works just fine,gets some of the air so less over fuelling.It comes down to risking damage to your engine for a noise.......I like the noise so ill take the risk
12 September 2008, 01:53 PM
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