Middle box to backbox info

[Jukie88]

I got a mid section of a 1.6 8v and was funna use it for a backbox on my hdi but puglove has made a good point of petrol exhausts made to give back pressure can is it still safe to use for a back box or do I need a hdi midsection to modify ??

[Poodle]

Don't use anything from a petrol unless it's supra lol, they're just too restrictive, will ruin your spool and cut off your top end as well.

[Jukie88]

Bad times :-( ill start looking for a hdi centre box

[samass]

The midsection will still be a straight thru design, but will likely have a diameter of about 2 inches or something daft, thus being restrictive. It's only the.back boxes that have the baffled, restrictive design. A centre off a gti or an xsi would probably work, as the bore is larger.

[Poodle]

I think the gti's have 2" dia, the 1.6 pipe i had floating about was even smaller than that. As a guide; the HDi std item is 2.25", so anything smaller than that will be restrictive.

[samass]

Gtis are same as the xsi, 2.25, I *think* parts of the cat might even be 2.5... But don't quote me on that lol

[Poodle]

Oh fair enough, didn't realise that, could be sweet then.

[samass]

Indizzle! Also, pood, what you up to this weekend? Text me

[Matt]

Ohhhhhh what are you planning?

[puglove]

Ohhhhhh what are you planning?

Not getting jelous are you mathew?

[Poodle]

Face it Mickey, the way you've been going it's like throwing a sausage down a tunnel, time for sammy boy to trade in for a fresher model.

[Mr Whippy]

Hahahaha!