yamaha1300
Junior Member
can anyone tell me how to drill my exhaust out to make it a bit louder i have a 08 fz6 s2
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So true, I have heard two like this and both sounded like garbageDrilling your exhaust isnt worth it only produces a very annoying hissing sound. My mate done it to his 06 fz6 thinking it would make it louder and it sounded s*#t.
you can remove the guts of the standard exhaust and weld tubes in to make straight thru but takes a bit of work and a dab hand with a welder.
Now, this statement isn't exactly true. All aftermarket exhaust systems (except the laser extreme quad) have been dyno tested and do increase power even with no fuel modifications. A proper tune will further increase these gains (and may bring back the loss of power on the laser). If the good doctor increased exhaust gas velocity and flow, likely on a dyno, you would see some gain. However, I would imagine that drilling through the chambers of the muffler without adding a smooth path for exhaust gas to flow would decrease backpressure but reduce the scavenging effect due to increased turbulence.Not to mention the loss of performance, unless you put a power commander on it and some time on the Dyno getting it tuned.
If you want noise put a Playing card in the Spokes :welcome:
Todd
Now, this statement isn't exactly true. All aftermarket exhaust systems (except the laser extreme quad) have been dyno tested and do increase power even with no fuel modifications. A proper tune will further increase these gains (and may bring back the loss of power on the laser). If the good doctor increased exhaust gas velocity and flow, likely on a dyno, you would see some gain. However, I would imagine that drilling through the chambers of the muffler without adding a smooth path for exhaust gas to flow would decrease backpressure but reduce the scavenging effect due to increased turbulence.
But like he said, he didn't do this for a power gain.
did you dyno your bike stock and with the aftermarket exhaust? usually the sluggishness is only at the extreme bottom of the powerband which you never use. On dyno graphs, power is gained over the entire rev range. likely any sluggishness is due to the increase being more dramatic on the top which would give a placebo effect of power loss when in fact there is either no gain and no loss or only a small gain that is diminished in relation to the top end gain.
The hair dryer analogy does not apply here, either. The reason a hair dryer motor spins faster with added backpressure is that it is doing less work. The electricity is the fuel, air, and exhaust equivalent in this analogy and covering the end would be similar to running your bike on the centerstand vs running it down the road. Or perhaps a better analogy would be riding your bike at 100 mph alone or in the draft of another vehicle. Less resistance on the drive equals easier operation or in this case a faster rev
I would say kinda true, most of your gain will be at the top end of the rev range. It has been my experience when using a Slip on with out a PC that it is hesitant on the bottom end. I know this for fact on the FZ6, as I just removed the Scorpion that was on their and went back stock. The bike is more responsive on the low to mid range throttle.
For example next time you are around a hair dryer put your hand over the exhaust end, what happens, it increases in speed. My point is with out that tune the bike wont rev as quickly, hence hesitation off the line. I wont say this is the rule for every bike, but I would say for 90% of the Sport bikes it is true. This is especially true on the bikes using exhaust valves, and removing them.
Todd