Do I need a remap with Cat removal - ZX6R Forum
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post #1 of 13 Old 04-15-2017, 03:19 AM Thread Starter
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Do I need a remap with Cat removal

Hi guys just bought a 2016 zx636 and got a couple questions

Does a link pipe and aftermarket muffler remove all the catalyst crap on the bike?

Will running without a cat without a remap cause issues?

Whats the prefered method of remap on these bikes ECU or power commander?
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post #2 of 13 Old 04-15-2017, 04:42 AM
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The cats are actually in the headers.... removing the resonator box, and replacing the muffler doesn't do anything to the cat.

As long as the cats are in place, a remap isn't really necessary, although it will smooth power delivery and gain you a couple of HP.

The preferred method is to get a professional to adjust the mapping, on a dynamometer with a gas analyzer. Buying a power commander with the O2 sensor is almost as good.

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post #3 of 13 Old 04-15-2017, 06:13 AM Thread Starter
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Ah bummer didnt realise there were cats in the headers! Thought it was only the 2012 model like that. Have to be a full system and remap from the sounds of it!
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post #4 of 13 Old 04-15-2017, 06:14 AM Thread Starter
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Thanks for the comprehensive reply too RJ
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post #5 of 13 Old 04-15-2017, 06:39 AM
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Quote:
Originally Posted by andananimal View Post
Ah bummer didnt realise there were cats in the headers! Thought it was only the 2012 model like that. Have to be a full system and remap from the sounds of it!
The exhaust is the same from 09-current model.

There are plenty of writeups on removing the catalytic converter from the 09-current exhaust. I have done it myself and while it is a little bit of work it is much cheaper when compared to a full system.

Also, I would try to avoid another expense like a link pipe and stick to a brand that eliminates everything without it.

An Austin Racing slip on and header decat would be similar gains to a full system for a fraction of the price.
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post #6 of 13 Old 04-15-2017, 11:05 AM
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Quote:
Originally Posted by andananimal View Post
Hi guys just bought a 2016 zx636 and got a couple questions

Does a link pipe and aftermarket muffler remove all the catalyst crap on the bike?

Will running without a cat without a remap cause issues?

Whats the prefered method of remap on these bikes ECU or power commander?

I have the stock headers + Ixillink-pipe + Yosh R-77 slip-on + BMC air cleaner + Schnitz reflash of my CPU on my '15; Also had EDR Performance in Portand, OR dyno-tune my DJ PC V... came out with 119+hp on an otherwise stock motor. EDR said the link-pipe & the Yosh (w/the dB killer removed) makes a noticeable difference, not huge, but certainly worth the effort.

EDR Performance

My bike is not a race bike, it's strictly for street/track-day use. I think if I did anything else, it might be switching out the head gasket, and a wee bit of valve/head grinding.

C8H10N4O2
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post #7 of 13 Old 04-15-2017, 12:39 PM
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Originally Posted by ZedExMuse View Post
I have the stock headers + Ixillink-pipe + Yosh R-77 slip-on + BMC air cleaner + Schnitz reflash of my CPU on my '15; Also had EDR Performance in Portand, OR dyno-tune my DJ PC V... came out with 119+hp on an otherwise stock motor. EDR said the link-pipe & the Yosh (w/the dB killer removed) makes a noticeable difference, not huge, but certainly worth the effort.

EDR Performance

My bike is not a race bike, it's strictly for street/track-day use. I think if I did anything else, it might be switching out the head gasket, and a wee bit of valve/head grinding.
Wait a min... you are talking about switching head gasket and engine work and you haven't even removed the cat yet

If you removed the cat before your tune you would've seen a huge difference... kind of a waste as it not necessary with just a slip on... but hey if your happy.
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post #8 of 13 Old 04-17-2017, 05:32 AM Thread Starter
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Could anybody point me in the direction of a decent guide on gutting the headers to remove the cat?
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post #9 of 13 Old 04-17-2017, 12:52 PM
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Depends on the tools you have available. Basically you are just removing two brittle honey combs from inside your header without breaking or bending the actual header. Not hard. Does make the bike a lot louder though and more prone to backfires until you do a kleen air bypass.
Mine still backfires sometimes during decel even after kleen air mod. Shoots fire shifting at night sometimes lol.

Last edited by oic0; 04-17-2017 at 12:55 PM.
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post #10 of 13 Old 04-17-2017, 12:57 PM Thread Starter
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Right, thanks. Looks like hole cutter and a big drill is on the cards then.

So for clarification,
1)decat headers
2)fit link pipe and slipon
3)do kleen air bypass mod
4)buy bazzaz fi unit and get a dyno set up

Anything i'm missing?
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post #11 of 13 Old 04-17-2017, 01:10 PM
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Originally Posted by andananimal View Post
Right, thanks. Looks like hole cutter and a big drill is on the cards then.

So for clarification,
1)decat headers
2)fit link pipe and slipon
3)do kleen air bypass mod
4)buy bazzaz fi unit and get a dyno set up

Anything i'm missing?
I would do the air filter as well before getting the tune, but I would say you are good.

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post #12 of 13 Old 04-17-2017, 01:29 PM
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Wear a freaking face mask when you decat the headers....that shit is nasty.
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post #13 of 13 Old 04-18-2017, 06:55 AM
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Quote:
Originally Posted by ninjaman89 View Post
Wear a freaking face mask when you decat the headers....that shit is nasty.
Platinum isn't toxic, but who knows what else they have in em and everything stuck to it probably is, so yeah, good idea.

I used an impact drill and concrete but as well as some chisels. It wasn't hard, it just took a long time and was tiring laying on the ground. Would be much easier off the bike.
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