before axle turndown system vs cool duals

canyon_fan91 · 08-19-2009, 06:44 PM

so im debating on either the before axle turndown system or the rear exit cool duals.
im looking for a good tone along with the performance gains, what would be the best choice?

crf250fridr · 08-19-2009, 08:15 PM

I am getting the turndown before axle system. But I'v read alot on here that the other exhausts such as the duals, dont drone as much in the cabin. I myself, like the clean look of no exhaust exiting the rear of the truck and thats why im going with the turndown. Its really just a preference thing.

Filli57 · 08-19-2009, 08:23 PM

yea the turndown will have more drone and be slightly less loud

canyon_fan91 · 08-19-2009, 10:03 PM

what do you guys mean as drone? ive never heard that used before

DavidW · 08-19-2009, 10:10 PM

A constant noise when cruising at speed
with stock exhaust you could hear drone when cruising at say 4000rpm in first gear at a constant speed
but when cruising on the highway in overdrive you wouldnt hear anything. but with an aftermarket exhaust you may hear drone in that situation

canyon_fan91 · 08-19-2009, 10:15 PM

i think i just might go with the before axle turndown just to keep it out of sight

CC05 · 08-19-2009, 10:23 PM

Quote:

Originally Posted by Filli57

yea the turndown will have more drone and be slightly less loud

Do you know what you're talking about here?

Sure, the turndown will create more in-cab noise (drone), however it will also be louder than a rear-exit exhaust. A turndown dumps the exhaust directly onto the pavement, letting the "exhaust noise" bounce back off of it.

I've run turndowns before on my v-8, and I can assure you that they are much louder than both rear and side-exit exhaust.

canyon_fan91 · 08-19-2009, 10:29 PM

see thats what i want, i want something kinda loud along with an increase in performance.

Drachenbrot · 08-15-2011, 10:33 PM

Quote:

Originally Posted by CC05

Do you know what you're talking about here?

Sure, the turndown will create more in-cab noise (drone), however it will also be louder than a rear-exit exhaust. A turndown dumps the exhaust directly onto the pavement, letting the "exhaust noise" bounce back off of it.

I've run turndowns before on my v-8, and I can assure you that they are much louder than both rear and side-exit exhaust.

Absolutely correct! The exhaust hits the pavement and resonates out more, making it sound more powerful. By cutting the exhaust off shorter with the axle turn down it will allow the exhaust to flow out faster and easier also rather than having to run the extra length of piping out the side or back. If you live in an area that floods or you do a lot of mudding it would be better to do the full exhaust system out the side or back.

RCuriel · 10-14-2012, 11:50 PM

I have always liked the look of dual pipes exiting the back.

08-19-2009, 06:44 PM	#1 (permalink)
canyon_fan91 Senior Member Join Date: Aug 2008 Posts: 1,120	before axle turndown system vs cool duals so im debating on either the before axle turndown system or the rear exit cool duals. im looking for a good tone along with the performance gains, what would be the best choice? __________________ '05 crew cab z71 canyon Lifted Club Member #256 Audio: jvc kw-avx810 with ipod cable, alpine spr-17's all around, alpine pdx-5, uts sub box with 2 8" boston subs ------FOR SALE, PM if interested Misc: viper 5900 alarm w/ remote start, painted interior to match, tinted tails and 3rd brake light, 20% front tint and 35% rear tint, 3" suspension maxx keys and 2.5 " aal Future Mods: pro comp 18's, ddm HIDs, supermod interior light and DRLs, mbrp cool duals, k&n cold air intake, painted mirrors and handles to match

08-19-2009, 08:15 PM	#2 (permalink)
crf250fridr Senior Member Join Date: Apr 2009 Location: Hesperia, Ca Posts: 272	Re: before axle turndown system vs cool duals I am getting the turndown before axle system. But I'v read alot on here that the other exhausts such as the duals, dont drone as much in the cabin. I myself, like the clean look of no exhaust exiting the rear of the truck and thats why im going with the turndown. Its really just a preference thing. __________________ 2005 z85 CrewCab GMC Canyon, Metallic Red, I4 Auto, 2wd De-Badged(all thats left is grill), Z71 Rims, Pathfinder A/P tires, K&N Filter, Clarion CZ500, MB QUART Formula 6.5" Components, Polk Audio DB651shallows(Rear Doors),

08-19-2009, 08:23 PM	#3 (permalink)
Filli57 Senior Member Join Date: Jan 2008 Location: Jackson, MS/Sylacauga, AL Posts: 1,624	Re: before axle turndown system vs cool duals yea the turndown will have more drone and be slightly less loud __________________ 04 Canyon 4X4. 6" lift, XD Addicts wrapped with Kelly Safari TSR

08-19-2009, 10:03 PM	#4 (permalink)
canyon_fan91 Senior Member Join Date: Aug 2008 Posts: 1,120	Re: before axle turndown system vs cool duals what do you guys mean as drone? ive never heard that used before __________________ '05 crew cab z71 canyon Lifted Club Member #256 Audio: jvc kw-avx810 with ipod cable, alpine spr-17's all around, alpine pdx-5, uts sub box with 2 8" boston subs ------FOR SALE, PM if interested Misc: viper 5900 alarm w/ remote start, painted interior to match, tinted tails and 3rd brake light, 20% front tint and 35% rear tint, 3" suspension maxx keys and 2.5 " aal Future Mods: pro comp 18's, ddm HIDs, supermod interior light and DRLs, mbrp cool duals, k&n cold air intake, painted mirrors and handles to match

08-19-2009, 10:10 PM	#5 (permalink)
DavidW Senior Member Join Date: Aug 2008 Posts: 1,021	Re: before axle turndown system vs cool duals A constant noise when cruising at speed with stock exhaust you could hear drone when cruising at say 4000rpm in first gear at a constant speed but when cruising on the highway in overdrive you wouldnt hear anything. but with an aftermarket exhaust you may hear drone in that situation __________________ 10 Cobalt SS 2.0 Black T/C 08 Trailblazer SS 6.0 Black AWD 09 Silverado 5.3 Street suspension 4x4 White Regular Cab---Traded In 08 Canyon 3.7 Z71 4X4 Black Crew Cab---Traded In

08-19-2009, 10:15 PM	#6 (permalink)
canyon_fan91 Senior Member Join Date: Aug 2008 Posts: 1,120	Re: before axle turndown system vs cool duals i think i just might go with the before axle turndown just to keep it out of sight __________________ '05 crew cab z71 canyon Lifted Club Member #256 Audio: jvc kw-avx810 with ipod cable, alpine spr-17's all around, alpine pdx-5, uts sub box with 2 8" boston subs ------FOR SALE, PM if interested Misc: viper 5900 alarm w/ remote start, painted interior to match, tinted tails and 3rd brake light, 20% front tint and 35% rear tint, 3" suspension maxx keys and 2.5 " aal Future Mods: pro comp 18's, ddm HIDs, supermod interior light and DRLs, mbrp cool duals, k&n cold air intake, painted mirrors and handles to match

08-19-2009, 10:29 PM	#8 (permalink)
canyon_fan91 Senior Member Join Date: Aug 2008 Posts: 1,120	Re: before axle turndown system vs cool duals see thats what i want, i want something kinda loud along with an increase in performance. __________________ '05 crew cab z71 canyon Lifted Club Member #256 Audio: jvc kw-avx810 with ipod cable, alpine spr-17's all around, alpine pdx-5, uts sub box with 2 8" boston subs ------FOR SALE, PM if interested Misc: viper 5900 alarm w/ remote start, painted interior to match, tinted tails and 3rd brake light, 20% front tint and 35% rear tint, 3" suspension maxx keys and 2.5 " aal Future Mods: pro comp 18's, ddm HIDs, supermod interior light and DRLs, mbrp cool duals, k&n cold air intake, painted mirrors and handles to match

10-14-2012, 11:50 PM	#10 (permalink)
RCuriel Junior Member Join Date: Oct 2012 Posts: 4	I have always liked the look of dual pipes exiting the back.

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