I recently fitted a K&N 57i air filter to my standard 97my turbo and think it sounds absolutely cool as **** but there is one small problem with the standard dump valve, it has the bottle blow effect as mentioned in the SIDC faq's at 3-4000 rpm. Has any one else had the same problem with these air filters (is it too much air getting sucked in?????) or is it just a coincidence and the dump valve has gone?
Any help or advice would be much apreciated as usual.

P.S. I think it might have also dropped the boost down .1 bar and were is the cheapest for a genuine part as i am not paying 165+vat at a subaru garage.


THANKS

 

Green Scooby,

My dump valve is playing up a bit too. I took it off to clean and flush it with carb cleaner and it's a little better but I will still replace it. I run the standard airbox so I'm not sure how these are related.
Maybe it has just gone.

Scotty.

 

Green Scooby,

On another note...

Are you coming to the North East Meet on 15th april ??

Neil

 

Thanks for the reply Scotty I took your advice and tried carb cleaner and found the same result, are you going to buy a genuine Scooby or aftermarket dump valve instead and at what price?????

CHEERS.