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05-19-2015, 07:48 AM,
#1
AIS and Cats
Hi all, yesterday a buddy of mine came over to take a look at my bike, he used to have an 1100 as well. He said he did the AIS removal on his bike. I got to reading about this procedure and saw that it was mentioned that you should not do this on a bike after '07 unless you have aftermarket exhaust because of the catalytic converters. My bike is a 2011.

Has anyone done this with their stock exhaust with cats in it, or is it a no no until cats are removed?
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05-19-2015, 12:11 PM, (This post was last modified: 05-19-2015, 12:12 PM by OldePhart.)
#2
RE: AIS and Cats
You definitely need to remove the cats. Without the fresh air to help the cats consume the fuel vapors the vapors will clog the cats, ruining them and also decreasing performance. I've even heard that it can be a fire risk though I've never seen empirical evidence of that extreme.

Oh, the AIS shouldn't have much or any effect on performance or mileage, anyway. The only real reason to remove or disable the AIS is appearance (getting that ugly muck off the bike) or if the bike is popping after going to a more open aftermarket exhaust.
===========================
2011 V-Star 650 Custom (new in fall 2013)
V&H Cruzer Pipes, Memphis Shades Bat Wing, Floorboards, Highway Bars,
Locking Bags, Tail Rack, LED Signals & Aux Brake Lights, Headlight Modulator,
Brake Light Modulator, 5/8" Gel Pad Under Upholstery.
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05-19-2015, 12:19 PM,
#3
RE: AIS and Cats
OK, thanks man. My buddy said it helped him gain a few ponies..
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05-19-2015, 04:02 PM,
#4
RE: AIS and Cats
(05-19-2015, 12:19 PM)Canucklehead Wrote: OK, thanks man. My buddy said it helped him gain a few ponies..
Heh, heh. We all fall into that trap of letting expectations drive our senses sometimes. There might be a tiny improvement but I don't think you'd be able to detect it short of a before and after dyno check.
===========================
2011 V-Star 650 Custom (new in fall 2013)
V&H Cruzer Pipes, Memphis Shades Bat Wing, Floorboards, Highway Bars,
Locking Bags, Tail Rack, LED Signals & Aux Brake Lights, Headlight Modulator,
Brake Light Modulator, 5/8" Gel Pad Under Upholstery.
Reply
05-20-2015, 05:12 PM,
#5
RE: AIS and Cats
(05-19-2015, 07:48 AM)Canucklehead Wrote: Hi all, yesterday a buddy of mine came over to take a look at my bike, he used to have an 1100 as well. He said he did the AIS removal on his bike. I got to reading about this procedure and saw that it was mentioned that you should not do this on a bike after '07 unless you have aftermarket exhaust because of the catalytic converters. My bike is a 2011.

Has anyone done this with their stock exhaust with cats in it, or is it a no no until cats are removed?
someone posted on this forum that cut a vstar catalyst muffler apart. and there is fiber mat coated/layered with a metal film as a catalyst manufacturers have been using stainless in modern converters as its much cheaper than cadium chromium and the like. so i doubt a higher exhaust temp from ais removal would cause damage i did a temporary disconnect by plugging the lines once to see what happens and it does stop the popping in the exhaust
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06-09-2015, 03:31 AM,
#6
RE: AIS and Cats
Dang, and I read this post JUST because I thought it was about cats. Well, I surely was disappointed!

Sent from my QTAQZ3 using Tapatalk
There is great need for a sarcasm font.
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