backbox gutting?

[SparkyMarc]

While browsing some old threads on msc I noticed a few people had "gutted" their micras backbox...presumably removing/drilling out the baffles...this sounds interesting but would this affect low end torque noticeably on a coilpack 1.0? If it didnt have a power loss id consider this

 

[markbognor]

I don't recall any loss of power when I did it, but the rest of the system was stock. The noise was noisy.

Mark's 1.0L

 

[SparkyMarc]

I take it the only option of resealing is welding it back up? Also I take it cutting it open is the only way of removal?.....from what I see your not removing the baffles just the dampening hair stuff

 

[markbognor]

It was pretty empty when it went back in. But for the work, just cutting the over axle hump off the box and tabbing something else is less work.

 

[SparkyMarc]

Does knocking out the backbox or slicing it and removing silencing affect the micras performance negatively? On say a 1.0? What about removing the backbox entirely and getting mad with a scaff bar? Hehe

 

[SparkyMarc]

Just realised youd already answered the power thing....my memory lol. Still wondering about complete removal lol

 

[markbognor]

Those twin pipes up there completely replaced the back box, with the rest of the system stock they were ok, but when they later ended up on a car with a complete de-cat the noise was a bit antisocial. There's no reason why similar couldn't be done with a single larger diameter bit of pipe.

 

[SparkyMarc]

Yeah was thinking about decatting but dunno if its worth the risk. Probably just get a new cat after the year and the complete sportex exhaust system. For now though I want some noise without much effort so I might just get hammer and long screwdriver.......lol

 

[Jordan27]

I think my baffles have just blown themselves out.. my backbox just sounds like it's blowing badly but it's not actually blowing, it's getting on my nerves already!