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Discussion Starter · #1 · (Edited)
Ok this will be alittle confusing to explain as i am thick so i will try and word it as best as i can :p.


Ok i had a large oval backbox (Alimiumised), with cat back middle section (stainless steel). I noicted with the large oval backbox on it was pulling back slighty, so i then got a stainless steel backbox with a 3'' slash cutt inward role with this the car was fine it didnt pull back... so then i changed the middle section to a custom de cat from front pipe to backbox stainless steel with the silencer only beening the backbox :) it sounds really raspy and pops in the lower revs but when you get to higher revs it like a deep sounding noise but i dont really want the rapsy noise as much at all so i might put the large oval backbox back on will this still pull back even though i changed the system? I have also had it chipped and remapped with a bmc filter on since then.

maybe its something i will have to try and if it does then just put the other on back on.
 

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I can't see how a backbox would make that much of a difference.

Best way to see if it changes it to fit the oval back on Rich and see how you go.
 

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Discussion Starter · #9 ·
thats prob why its moving because its moving with the engine movment.you normally have some spring bolts on the bottom of the manifold that take the movment out the system.
i only just had custom de cat though so it wasnt that :) i got it all on now only silencer being the backbox all the way from the front pipe its loud what ever backbox i have on really....
 

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Got any pics Rich?
 
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