It's Baffling... - Honda Shadow Forums : Shadow Motorcycle Forum

SuperiorKolours · 11-06-2012, 02:43 PM

How much does it effect the motorcycle when you take out the baffles, as far as carbs and engine performance?

-AJ · 11-06-2012, 04:54 PM

you wont gain any power. most likely you will lose power if you don't do anything with fuel and air also

TCazes · 11-06-2012, 05:31 PM

Well you will allow more air out than what the bike is taking in to mix fuel etc. Without baffles, with jets, with the right mixture it will move your torque band more towards the upper rpm range than the mid to low it is at with baffles.

93gc40 · 11-06-2012, 06:01 PM

We talking stock pipes or aftermarket. Eitherway it will be louder. if stock pipes might cause lean enough condition to need adjustment. If Amarket, probably will not affect tuning.

SuperiorKolours · 11-07-2012, 01:48 AM

Quote:

Originally Posted by -AJ

you wont gain any power. most likely you will lose power if you don't do anything with fuel and air also

Yeah, I didnt think I would gain any power, I meant more like do I need to rejet because of the removed baffles or is it not a big deal?

**old dad** · 11-07-2012, 08:18 AM

If only the baffles are removed on your vlx, you might get away with only having to adjust the a/f screw to get rid of any popping or backfiring on deceleration. That's all I had to do. If you fiddle around and change anything on the air filter you will likely need to re-jet the carb too.

adlowe · 11-07-2012, 09:12 AM

Quote:

Originally Posted by TCazes

Well you will allow more air out than what the bike is taking in to mix fuel etc.

No you won't. Taking the baffles out does NOT create a vacuum.

93gc40 · 11-07-2012, 11:41 AM

Quote:

Originally Posted by TCazes

Well you will allow more air out than what the bike is taking in to mix fuel etc. Without baffles, with jets, with the right mixture it will move your torque band more towards the upper rpm range than the mid to low it is at with baffles.

Quote:

Originally Posted by adlowe

No you won't. Taking the baffles out does NOT create a vacuum.

Actually, after the motor, the exhaust is the main restriction to the amount intake air flow. If you remove the baffles, intake flow Goes UP. Doesn't create vaccum just a bigger hole for the air to exit through. More air flow often means you'll need to adjust the AF mixture. In general increasing air flow will increase power, it also make the AF LEAN. You won't see any added POWER, but you might see better PERFORMANCE at speed, but a loss of torque off the line. Basically the available torque will move a little higher in the rev range. With your mods, the changes won't be much, we're talking tiny fractions of a # here..

adlowe · 11-07-2012, 12:23 PM

Quote:

Originally Posted by 93gc40

Actually, after the motor, the exhaust is the main restriction to the amount intake air flow. If you remove the baffles, intake flow Goes UP. Doesn't create vaccum just a bigger hole for the air to exit through.

Yes. But you will NOT get more out than the engine takes in -- as TCazes stated when he posted "Well you will allow more air out than what the bike is taking in to mix fuel etc."

DarkSpirit750 · 11-07-2012, 03:56 PM

On my vt750 I didn't notice any real change except the sound. It now sounds like a motorcycle. No popping or backfiring or sputtering on decel. Did not notice any loss of power.

11-06-2012, 04:54 PM	#2 (permalink)
-AJ Senior Member Join Date: Feb 2011 Location: good ole' kentucky Posts: 3,454	you wont gain any power. most likely you will lose power if you don't do anything with fuel and air also __________________ I started out with nothin'... and i still got most of it left. 2006 Honda VTX-1300R Memphis Shades Batwing, Stock "C" Model Pipes, Mustang Seat, Mustang Fender Bib, National Cycle Hard Bags, Lindby Multibar, Küryakyn Sound System, Küry ISO Grips, Küry Grill Cover, Küry L.E.D Light Kit, Küry Triple Whammy, Küry Constellation Light Bar, TTO Tach, Metzeler Tires, Chromed Wheels and much, much more. Last edited by -AJ; 11-06-2012 at 04:56 PM.

11-06-2012, 05:31 PM	#3 (permalink)
TCazes Senior Member Join Date: Jul 2012 Posts: 378	Well you will allow more air out than what the bike is taking in to mix fuel etc. Without baffles, with jets, with the right mixture it will move your torque band more towards the upper rpm range than the mid to low it is at with baffles. __________________

11-06-2012, 06:01 PM	#4 (permalink)
93gc40 Senior Member Join Date: Nov 2008 Location: Visalia, CA Posts: 4,332	We talking stock pipes or aftermarket. Eitherway it will be louder. if stock pipes might cause lean enough condition to need adjustment. If Amarket, probably will not affect tuning. __________________ 93 VT1100C Harley Killer (1150cc), VH Exhaust, 2mm sleeved and bored, Modified Heads and Valves, Adjustable Timing, Touring Seat, Baby Apes, Metzlers

11-07-2012, 08:18 AM	#6 (permalink)
old dad Super Moderator Join Date: Oct 2008 Location: sc Posts: 7,144	If only the baffles are removed on your vlx, you might get away with only having to adjust the a/f screw to get rid of any popping or backfiring on deceleration. That's all I had to do. If you fiddle around and change anything on the air filter you will likely need to re-jet the carb too. __________________ 2006 vlx

11-07-2012, 03:56 PM	#10 (permalink)
DarkSpirit750 Member Join Date: Jun 2012 Location: Fayetteville, AR Posts: 71	On my vt750 I didn't notice any real change except the sound. It now sounds like a motorcycle. No popping or backfiring or sputtering on decel. Did not notice any loss of power. __________________ 2009 Shadow Spirit VT750C2 2003 Harley Fatboy FLSTI 1985 Rebel CMX250C-Sold

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