Pulling cat from stock header pipe
- Thread starter jbird
- Start date
While I have never personally done it we have had a couple of customers who have done it to their bikes and that are happy with it. They've claimed that it does make the bike sound louder but I'm not sure how the performance is. One thing that would concern me is whether or not pulling the cat out will alter the air:fuel ratio. If it does, which I would think it would, then you'd want to make sure you have the bike re-tuned otherwise you could run the risk of the mufflers discoloring.
Anyway, those are my thoughts / concerns. I'm interested in hearing what others might have to say.
Anyway, those are my thoughts / concerns. I'm interested in hearing what others might have to say.
Thanks for the feedback. I already have a tuner on the bike when I changed the slip-ons and air cleaner, so I can modify the fuel/air mixture for the less resistance. Just what to know if I would achieve better performance with exhaust scavenging of the 2into1into2 verses true duals. Want to keep the dual exhaust and get best performance.
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I
imoo6170
Guest
I have done it. Personal thoughts are:
Does it improve performance? - didn't really notice any difference. That said I have a stage 4 engine so it is a bit hard to tell.
Run cooler? - yes to this one. Also the heat off the pipe is reduced
Sound louder? - again didn't really notice any difference.
As for the tune I did the mod just before a tune and the guys told me that they did not need to make any changes to the air / fuel ratio but again that could also be due to the fact that it is a stage 4 engine.
Does it improve performance? - didn't really notice any difference. That said I have a stage 4 engine so it is a bit hard to tell.
Run cooler? - yes to this one. Also the heat off the pipe is reduced
Sound louder? - again didn't really notice any difference.
As for the tune I did the mod just before a tune and the guys told me that they did not need to make any changes to the air / fuel ratio but again that could also be due to the fact that it is a stage 4 engine.
I
imoo6170
Guest
Not sure if u will be able to access this if you are not a member of HD forums Aust but if you can it is interesting reading:
http://www.hdforums.com.au/Default.aspx?tabid=71&forumid=7&postid=347082&view=topic
http://www.hdforums.com.au/Default.aspx?tabid=71&forumid=7&postid=347082&view=topic
I just bought a no-cat pipe off eBay. 10 HP is a pretty good increase and I figure I will remove the cat from mine a and sell it on eBay after I put the new one on. Thanks for all of the feedback, it just validated my thoughts on this.
Regards,
Jay
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Update, installed the header pipe with no cat and remapped my tuner. I took it out tonight and all I can say is WOW, WHAT A DIFFERENCE!!! I would highly recommend to anyone that doesn't want to spend big $$$ on a whole new system.
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I gutted my cat. No O2 cross talk. Sounds much better and seems to have more power.
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Usually do not give e-mails to naive clients. Your emails could be flagged as spam if you send out those to people that did not register independently. This is damaging to organization and may even get the Ip clogged by some ISPs.
Make emails private when you possible. Like most marketing and advertising, there are actually more buyers willing to do more company with you if you are much more friendly. For instance, should you are aware of the motives that they had for registering for your e-mails, placed that inside your meaning for them.
Understand that the purpose of online loan email marketing is to find your merchandise sold. Each electronic mail that is certainly delivered must entice the readers are interested to buy anything of your stuff.
It is extremely wise decision to require people that would like to try getting emails of your stuff to increase opt-in. This almost certainly seems like overkill, perhaps conserving your site from becoming de-activate by your hold above studies that you're mailing out unwanted email.
Usually do not send out e-mail to your customers more than a solitary electronic mail message a week. Most buyers receive a lot of your client base most likely needs to have a tendency to various other e mail communications daily and don't have time to learn them. Mailing several e-mail every week can gradually lead to people removing the things you send out without even going for a correct appearance and disregarding your customers will cease reading through.
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Use inactive and energetic opinions to improve your email marketing attempts. Lively comments is precisely what you would probably count on: asking your readers for viewpoints along with other ideas they will often have. Inactive responses is normally not visible towards the followers. You can utilize whichever resources and application which you have to be able to figure out which backlinks are receiving the most mouse clicks.
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Deliver customers pleased birthday celebration wants. Add a area for clients to choose in for them to obtain a bday and send automated greetings. This easy stage is likely to make consumers feel as if you might be about them, especially if there's a reduction or marketing incorporated with their greeting.
Use "Alt" tags in case your e-mails consist of graphics. Alt tags will replace photos that aren't permitted or perhaps won't load.
Help make your e-mail marketing activities will be in sync with some other special occasions and vacations. Plan for these opportunities nicely under consideration. Produce related strategies for particular store holiday seasons like Valentine's time or Christmas time, Halloween season and Valentine's Day to deliver your potential customers with simple acquiring recommendations.You may also enhance revenue at or else slow periods during the year.
Have men and women twice decide-in when subscribing to you personally mailings. Many people key in an e-mail address. Getting them put in their e-snail mail will eradicate errors brought on by this.
Keep an eye on what your competitors are doing using their e-postal mail marketing courses. This can be done by simply being a customer for their e-mails. It is possible to inform what you should examine their strategies and do much better.
Use all the details you when clients sign up for make their buying experience. In case a customer is filling in a purchase order form related from an choose-in email, help it become so that their monthly subscription auto-fills up on the acquiring paperwork. This quickens the take a look at procedure go a lot better and make it easier for them to purchase your information.
As an example, a e-newsletter associated with company could be more profitable if it is send throughout function time.
Think about getting pictures in your e-mail marketing design. Photos may be fun, however are not really displayed appropriate. Understand that some people will vary world wide web rates and also types of computers and get slow-moving personal computers. Target the content as an alternative to images. Many people will find the motivation to stay along if you do that.
Always have a person's show authorization from buyers before you include these to your list. You will end up viewed as a spammer when you give them nearly anything without the need of requesting very first.
As you can tell, there are lots of actions you can take to make the material of your respective e-mails connected to your potential customers. In the event the e-mail which you mail out are just junk, the amount of your customers exiting your email list will easily improve. Utilize the assistance supplied on this page so you can use emails to help you improve your company.
Hello everyone, Im a newbie and want a better sounding and performing bike (2012 SG). I eventually plan on pushrods, cam and tuner. With that being said, exhaust needs to be done. Besides taking the header off and cutting the section out behind the collector, What else needs to be done?
Last edited:
You might want to just try putting on a new muffler . Reinharts or Vance & Hines. Removing the cat can be complicated unless you've done it before or have someone that can do it for you .
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I have the v&h monster round slip-ons. I bought the bike like that so I'm not sure if they have cats or not. Probably not I'm guessing with the stock head pipes.
yes- your stock head pipes have the cats in them. If you are running the monster slip ons with the stock head pipe, it should sound pretty good. You can leave it that way until you decide to get a
full new exhaust or you can remove the cat in your current one--up to you. Maybe some one else can tell you how to do it. I haven't done it--so I don't know.
I cut the headpipe on my 13 SG and removed the cat. performance increase? maybe a slight one, as for cooler? Hell Yes!! and yes its louder too. The cat muffles noise very well. Make sure when you cut the pipe to keep it in one piece, IE just cut a window in it. Makes line-up issues a thing of the past.
I cut the collector behind the O2 sensors underneath the heat shield clamp. Then I drilled, chiseled, dug out the honeycombed mess for about half an hour. Afterwards I had the pipe rewelded at a local shop and the ceramic coated silver. The clamp covers the weld. The bike runs perfectly. I know some very knowledgeable tuners have spoken about cross talk between the O2 sensors causing a problem tuning. The tech at my HD shop had no trouble with the tune. The bike runs great and good mileage if I stay off the throttle. FWIW the rear O2 sensor(I think) is in its own header tube which runs about 6" past the sensor before it opens into the collector.