Is the Bonez highflo cat that much quieter compared to the RB presilencer? Does it come with a split air pipe? How much of a power difference is there is any? Would it be worth it to switch to a Bonez high-flo system for sound?

Opinions are welcome.

 

My stock 7 has the Bonez cat, but not the down pipe. It doesn't run now, but IIRC it didn't sound any different than stock.

 

It is SLIGHTLY quieter when the Bonez cat was installed in the place of a RB pre-silencer, and the car has more of a "surge" of power for a second or two after you gas it, but then you can fell the exhaust "load up" or the backpressure actually increase too high for optimal performance, when this did not happen with just the Pre-Silencer on there. with the cat, it has a slightly different tone also.

this was all "felt" on a S5 with RB header, APEXi N1 Dual cat-back and one of the two said mid sections. the car has other minor modifications, but none that would affect this requisition of what it was like before and after.

- chris

 

the above post was actually mine, chief was over earlier and must have signed on his name, just FYI....

- chris

 

Wrong thread. Stupid mobile