105db to 98db silencer methods

[RyanW]

Anyone got any suggestions or experience on how to get my 105db car down for a 98db track day ive mistakenly booked?
Ive been looking at combining one of these with some Silencer Packing:


but none of the manufactures quote any expected results, any one have any experience or suggestions?

[RyanW]

Thanks for the comments, for reference the car is a Civic EP3 cup car. Think I will go and have a new system made up..

[RyanW]

HustleRussell said:

We had to lose 4dB from a racing Lotus Elan, we managed to do so with an additional silencer and a decibel insert but lost about 40% of the car's power in the process.

Didn't realise the silencers suck so much power. thanks