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Abbott dump valves actually adds 100 bhp, its a misprint :roll:

How does a valve add horse power :nono;
 

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a1damuk said:
What are the syntoms of a failing valve? I noticed a strange noise yesterday when i drove with the window down, at about 4000rpm in second, there was a kind of wailing noise, a bit like a police car in the distance? I can assure you it wasnt though, lol
That could well be the dump valve failing, some people call them the hooter valve for this reason! ;)
 

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a1damuk said:
Thanks for the advice, I have ordered the the FMDVS006 from PFS. Are these a direct swap?
Well done, yes swapping should take about 5 mins with a cup of tea! ;)
 
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