Fonzey

iTrader: (5)

I got pulled up a couple of times at a Javelin trackday this week as I was "very close" to the drive-by dB limit.

Unfortunately there is no static test at Blyton, so I don't have a reference point for comparisons.

My system is as follows:

Decat downpipe to 2.5"
2.5" deresonated centre section
TSL Group N Backbox

I've still got my Prodrive backbox locked away, which I know is safe for trackdays - but rather than messing around swapping backboxes for track days, I thought about fitting a resonated centre section.

Is this likely to bring my volume down, or just change the tone? Are there any "go-to" centre sections worth knowing about?

Here is how I sounded, for reference:

I love the tone, but it's no good to me if it's going to cause me problems at track days

romford-boy

It should bring the volume down, that is the whole point of it. Though a decat and the Group N back box are both pretty aggressive in themselves.

For comparison my 2005 STi has a pretty loud Afterburner Vortex back box, high flow sports cat but resonator still in place and is no where near as aggressive as yours sounds.