Anyone seen this before?

[merlin's S4]

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=tp&Product_Code=ATP-ACS-010&Category_Code=BCS

Seems like a reasonable idea to me, especially if you don't want the noise associated with a performance exhaust! You could possibly place before the cats too to eliminate the back pressure caused, yet they'd still be there at MOT time! What do you guys reckon??

[Greg_S]

yeah there was a thread on them a while back. I cant find it just now though.

I would be a little worried about the flames & turbulence caused using this exhaust config though

[HPmuirt]

yeah there was a thread on them a while back. I cant find it just now though.

I would be a little worried about the flames & turbulence caused using this exhaust config though

I assume it could be used with a second pipe, in the same was as atmospheric DV's

Cheers n

Si

[Greg_S]

Yeah you would tee it off the main exhaust but if isnt that far from the downpipe there is probably gonna be alot of heat & flames coming out underneath the car, unless you could have a letter box style side exit near the front like the one Chris M has keepin exhaust length to a min then

[Floddy]

AFAIK Golf R32 and some Porsches have a similar kind of valve, sitting at the rear muffler.