I have a MY00 UK Classic with full PPP, and as much as I like the sound of the Prodrive backbox I heard a Ninja backbox and I now want one lol

My main worry is, will simply swapping the prodrive backbox with a ninja one affect performance at all? ie the prodrive pack, cats, etc?

also should it be a straight swap or will I need anything else?

 

Straight swap

 

You won't notice any significant difference in performance, at your level of tune, the variation in power between any decent backbox and the next is going to be tiny - perhaps ±1bhp or something.

Was the ninja you heard attached to a PPP system? If not it will sound a bit different on your car. Any backbox with a standard system will be quieter and sound different than the same backbox with a full sports exhaust system fitted to it.

If it was, and you're after the noise alone, go for it. For performance improvements, you'd be better off swapping some of the other parts fo the exhaust for e.g. a sports cat (or even de-cat) downpipe or centre section, which as I said will also change the noise a bit.

 

I had just a Ninja BB on and it released the burble, but didn't turn heads and the sound was nice. Now a full decat fitted and it's one noisy system. People hear you coming when you're just driving normally. When it's on full boost it's stunning, i've heard nothing like it. But then i've not heard "that" many systems. I love it.