G'day fellas, just got my quiet baffles in the mail today for my V&H straight shot slip-ons and they look way too restrictive with that sealed off front end cap..... just wondering how much it will hurt performance?

Should I run them as is?  Or should I drill out a 5c size hole in that end cap to allow more exhaust flow?

Thanks for any advice.  Sorry, the picture is so big. ..

 

 

 

 

 

 

 

I guess they are called "quiet baffles" , and for that style of pipe, it's hard to cut noise any other way.
I bet they'll still be plenty loud when on the gas, but allow you to sneak around when neaded !
Might cost a few HP, but only way up top.

Yeah...but just comparing them to the std baffle (which is almost a straight through pipe )  it seems like there's no way these quiet baffles could flow enough exhaust? It might help bottom end TQ by providing a lot of back pressure - but I dont want to sacrifice mid-upper end HP/TQ?

Maybe if I drill a central hole in the restrictive end cap it will be the best of both worlds???

Yes they are much shorter than the std V&H baffles they come with. 

Do you think they will compromise performance?  I'm putting new SE 204 cams in and getting a custom map on the dyno and dont want the pipes to be the "weak link" and hold me back in performance.

I've got 'em, they sound better than the std V&H baffles and in my opinion bike goes better now too with a bit more back pressure.