January 17th, 2013, 01:26 PM | #1 |
ninjette.org member
Name: Jason
Location: Northwest FL
Join Date: Dec 2012 Motorcycle(s): 13 ninja 300, 04 crf 250, 06 yz125 Posts: 43
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impressions on cat delete
I deleted my cat today.
1. It is not noticeably louder. 2. With a slip on with the quiet baffle in place which flows very similar to the stock muffler it makes a slight difference. I noticed a bit better off idle response and low end torque up to mid. I did not notice any difference in the mid to top. When I remove the snorkle and install my tune and take out the baffle I'm confident it will make a much bigger difference. I will follow up with that in a few days when my area p micro tuner arrives. I will post up some pics then as well. If anyone is interested I can do the cat delete, PM for details. I would not do this if the bike will remain stock as it wont make big gains with the stock muffler, airbox and tune. Once those restrictions are eliminated then it will become much more beneficial. |
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January 17th, 2013, 02:01 PM | #3 |
Jigglin' your Jiglets
Name: Sean
Location: San Jose, Ca
Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much.
Blog Entries: 1
MOTM - Apr '13
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Also dynos
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If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs |
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January 17th, 2013, 02:28 PM | #4 |
Cat herder
Name: Gort
Location: A secret lair which, being secret, has an undisclosed location
Join Date: May 2009 Motorcycle(s): Aprilia RS660 Posts: A lot.
Blog Entries: 6
MOTM - Jul '18, Nov '16, Aug '14, May '13
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When I deleted my cat, my dogs were annoyed with me because they didn't have anything left to chase except squirrels.
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January 17th, 2013, 02:29 PM | #5 |
ninjette.org certified postwhore
Name: .
Location: .
Join Date: Feb 2011 Motorcycle(s): . Posts: Too much.
MOTM - Feb '13, Feb '14
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January 18th, 2013, 09:19 AM | #6 |
ninjette.org member
Name: Jason
Location: Northwest FL
Join Date: Dec 2012 Motorcycle(s): 13 ninja 300, 04 crf 250, 06 yz125 Posts: 43
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Here are a couple pics. One of the header cut in two, One of the cat material before removal. And one of the back of the header where the muffler connects.
Yes I did remove the burs left from the chop saw before welding back together. I removed the necked down portion at the rear of the header. The line (drawn with sharpe) represents the overlap of my slip on. It fits perfectly with the larger OD of the pipe with no gasket. I removed the necked down part only. This necked down portion in addition to the cat is why a slip on does not add power or not much compared to a full system. I dont presume that these mods will be as good as an aftermarket header and exhaust that have been dynoed and tweaked and dynoed again but I think it will make an improvement, ask Old3. Also I must give props to Area P as I ordered my tuner yesterday and they will ship today. They gave me free shipping and a little extra because of thier mistake. I can tell that they prioritize customer service over the bottom line and will be great to deal with in the future. Im about to make another order from them! |
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January 20th, 2013, 06:45 PM | #8 |
ninjette.org member
Name: Jason
Location: Northwest FL
Join Date: Dec 2012 Motorcycle(s): 13 ninja 300, 04 crf 250, 06 yz125 Posts: 43
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Thanks man!
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January 21st, 2013, 07:10 AM | #9 |
ninjette.org newbie
Name: ChainLash
Location: SF, CA
Join Date: Jan 2013 Motorcycle(s): Ninja 300 SE Posts: 1
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Would you mind weighing just the cat to see how much weight savings?
Thanks. |
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January 21st, 2013, 07:47 PM | #11 |
ninjette.org member
Name: Jason
Location: Northwest FL
Join Date: Dec 2012 Motorcycle(s): 13 ninja 300, 04 crf 250, 06 yz125 Posts: 43
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It is just powder now in my shop garbage can, It does not weigh very much. I would guess a half pound or less.
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January 21st, 2013, 08:01 PM | #12 |
ninjette.org member
Name: George
Location: Delaware
Join Date: Aug 2012 Motorcycle(s): 03 ninja 250 Posts: 201
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Deleting cat added low end torque? Interesting thought it would of been opposite.
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January 22nd, 2013, 09:06 AM | #13 |
ninjette.org member
Name: Jason
Location: Northwest FL
Join Date: Dec 2012 Motorcycle(s): 13 ninja 300, 04 crf 250, 06 yz125 Posts: 43
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Only butt dyno, It just seems to ease off from a stop better and have better response down low. I cant confirm any actual increase in Ft lbs. I would have guessed less low and more up high but I felt the opposite.
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