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[rainierexpress]

I'm wondering if anyone else has noticed a relationship between how your bike is tuned and the level of exhaust noise. I have an 08 FXSTSSE2 on which I installed a set of V&H Big Radius 2-2 and a PCIII. I was never very happy with the tuning of the bike even after three separate dyno runs. During this time, I became very familiar with the noise level of the exhaust. I thought the noise level was just right and the sound was good. I went ahead and installed a ThunderMax with AutoTune in place of the PCIII. Now the bike runs great and I am very happy the power and torque results. On the other hand, the exhaust sounds better than ever, but it is VERY loud. I don't have any way to measure the Db, but I know it is significantly louder. I know some exhaust get louder as they age, but this happened overnight when I installed the TMAX. Has anyone else had this experience? Can you explain it to me? It's almost too loud now.

[LarryB]

It's almost too loud now.

That's a first. are there any baffle choices with the mufflers? you are putting out more HP and TQ so in essence, yes, there is a relationship but have not heard of it as dramatic as you state.
My suggestion would be to go to walgreens and get some ear plugs, but thats just me.

[aclass]

I'm wondering if anyone else has noticed a relationship between how your bike is tuned and the level of exhaust noise. I have an 08 FXSTSSE2 on which I installed a set of V&H Big Radius 2-2 and a PCIII. I was never very happy with the tuning of the bike even after three separate dyno runs. During this time, I became very familiar with the noise level of the exhaust. I thought the noise level was just right and the sound was good. I went ahead and installed a ThunderMax with AutoTune in place of the PCIII. Now the bike runs great and I am very happy the power and torque results. On the other hand, the exhaust sounds better than ever, but it is VERY loud. I don't have any way to measure the Db, but I know it is significantly louder. I know some exhaust get louder as they age, but this happened overnight when I installed the TMAX. Has anyone else had this experience? Can you explain it to me? It's almost too loud now.

Just had my bike tuned Wednesday and noticed a change in the "racket" as soon as the tuner brought it back around the building.  Rode 610 miles this weekend to Deals Gap and there no doubt about it,  it's different.  A good tune is worth it IMO.  The bike feels great and my best mpg was 47.

[Hoist!]

The tune definitely effects the sound! Not your imagination. Getting the fuel and timing right sounds different than these things being off.

Hoist!

[CVORick]

Just had my bike tuned Wednesday and noticed a change in the "racket" as soon as the tuner brought it back around the building.  Rode 610 miles this weekend to Deals Gap and there no doubt about it,  it's different.  A good tune is worth it IMO.  The bike feels great and my best mpg was 47.

I didn't know a GOOD tune is supposed to get me better MPG.  Guess I am confused.

[aclass]

I didn't know a GOOD tune is supposed to get me better MPG.  Guess I am confused.

Not sure I understand it either CVORick but thats what it calculated.  We were going through alot of twisties and on 45mph roads for most of it so I dont expect to get that consistently.
Besides,  I told the tuner that big numbers didnt concern me,  all I want is a good healthy tune.

[CVORick]

Not sure I understand it either CVORick but thats what it calculated.  We were going through alot of twisties and on 45mph roads for most of it so I dont expect to get that consistently.
Besides,  I told the tuner that big numbers didnt concern me,  all I want is a good healthy tune.

I get my best MPG in the mountains as well.  I agree 100% about going for good tune. Mine runs better and cooler since the tune.

[LarryB]

while in the black hills last week I was getting near 50 mpg, which doesn't .ean better mileage to me, it means LEANER, and most gas there is 89 Oct. at home here is average 40mpg which is fine

[Dan_Lockwood]

Hotter air will be less dense and of course the higher you go up in the mountains the air gets thinner (less dense).

But if our ECM can only do minor changes, either running way hotter ambient air or running high in the mountain air, the bikes will be running richer, not leaner.  The air is a variable, the fuel for all practical purposes is fixed, especially if you're running a tuner that disconnects the O2 sensors.

That's why motors produce the most power at see level and add to that cool and damp weather and you've got the makings of a great performer.  Cool 60 degree air, sea level and 90% humidity is like having a supercharger in the mountains.

I was at Wyo-Tech in Laramie WY while I was doing a cross country to meet up with Rod & Custom magazine in Bonneville with my blown 392 power Willys coupe.  Normally I could just get on it without any issues and smoke the tires at about any speed I wanted up to about 60 mph.  So after I had my visit to thank one of the instructors that helped me out with a phone number in Cheyenne, all the kids came out to the parking lot and I was going to put on a bit of show.  I was embarrassed because the best I could muster was about 10' of rubber and very little smoke; that was it.  They all like the car a lot though; they were in the custom car building class.  Go figure...