Why does my exhaust backfire like this?

[DylanE]

http://www.youtube.com/watch?v=Pw0vdfRKpAw

Just noticed the other day after I had a few things done. This is what I had done.

New spark plugs
New air filter
New Oil filter
New cabin filter
New tyres
New valves
Cleaned the throttle body

Wonder why it does this and if its a problem cheers.

 

[coops10]

I couldn't hear it backfiring ? :s

 

[DylanE]

Its not really backfire. Its just when I put my foot down then release it there is a weird sound that does not sound normal to me.

 

[RobVT]

it sounded like it was popping abit, this would be down to a tired exhaust could either be the back box or the middle box with tired baffles, one of them just probably need replacing

 

[DylanE]

Yea, Thanks. I like the noise I just thought I'd ask someone bout it.

 

[Big_daddy]

seems fine to me