trackday silencers

[griffter]

What are the best trackday silencers for reducing noise level?

If I choke the bhp a bit, so be it, better that than not drive at all .

Bolt on tailpipe silencers (as from ACT)?
Supertrapp type?
Anything else?

I'm taking the 4.3 to Castle Combe so I need to shut it up as much as possible...

[greenv8s]

I think the bolt-on type as sold by ACT are your best bet, they give relatively little back pressure and I doubt you will notice any power loss. They will scratch the outside of the tail pipes but that shouldn't be a problem unless you have spent hours polishing/chroming them etc.

[k77-widow maker]

Can't think why but....merlin do a great deal on supertrap trackday silencers!!!

To be fair though i have done 20+ trackdays and not failed one noise test in my precat, so the ones i got from there do the job.

[RichB]

greenv8s said:

I think the bolt-on type as sold by ACT are your best bet, they give relatively little back pressure and I doubt you will notice any power loss. They will scratch the outside of the tail pipes but that shouldn't be a problem unless you have spent hours polishing/chroming them etc.

I have a pair of bolt-ons and they are fine provided you smear a bit of grease on the tail-pipes first. R...

[tiny]

Got quad pipes on mine so I had to go the insert route with Peninsula - gets me down to just on 100db which condidering my mods to engine and exhaust is pretty good but still marginal at places like Combe who can be strict.

[shpub]

k77-widow maker said:

Can't think why but....merlin do a great deal on supertrap trackday silencers!!! To be fair though i have done 20+ trackdays and not failed one noise test in my precat, so the ones i got from there do the job.

They are not supertrap but they are cheaper and do the job.

[DustyC]

What are super trap and merlin?

Are they the ones that look like several metal pancakes on the end of the pipe so that the gases exhaust out the sides rather than the end?

I noticed all the HotRods use these too.

Not that it matters to me anyway, I dont need em