What is the best air intake upgrade?

[Halfnormal]

I have aftermarket (Hashpipes) exhaust on my trike. It looks like they left the air intake stock. I checked out DK Customs and noticed that there is a plethora of options to pick from. What should I look for in upgrades? Thanks!

 

[Philip R]

I have aftermarket (Hashpipes) exhaust on my trike. It looks like they left the air intake stock. I checked out DK Customs and noticed that there is a plethora of options to pick from. What should I look for in upgrades? Thanks!

Give DK Customs a call. They not only build but test their products. They will be happy to give the the right info.

 

[Jack Klarich]

This https://www.triketalk.com/forum/thr...Wrinkle-Black-Outlaw-HiFlow-Intake-Systems***

 

[Jack Klarich]

Have a look here for some charts on D K Customs testings of Air Cleaners

http://www.dkcustomproducts.com/milwaukee-eight-dyno-charts-other-interesting-info-dk-m8-rpt.htm

 

[OLBLU]

Make sure you get a breather system to go with it , if you want the best out of the new air cleaner.

 

[Fearless]

I have a Boyesen X force, Boyesen is an old dirt bike Performance parts Company. Working well for me.ride safe Fred

 

[DK Custom Products]

Here is a good overview LINK of the different options.

The 636v will not really fit on the Tri Glide, the 425 is a bit small at higher rpms, so that leaves the 587, 606 and we'll have the 828 soon for the TG.

The 587 and 606 perform virtually the same. The 587 does not stick out quite as far as the 606, so if that is a consideration for leg clearance.

I run the 606 currently, because I like the look of the cover I'm running. But I ran the 587 for years. They are both excellent performers.

Regarding the External Breather Option on the air cleaners...they all function the same as far as performance, so it just comes down to the look you like. For the Twin Cam I like the Stealth the best. You can see it HERE. For the M8 I like the Premium Discrete the best, you can see it HERE.

Here are a couple of photos of my Tri Glide with the 587-

Here are a couple of photos of my TG's with the 606-

Kevin

 

[Halfnormal]

Thanks Kevin. That is the information I was looking for! :clapping:Now to pick one and save up my allowance!

 

[Colleydog]

Kevin, is there one you can use and run your stock cover?

 

[DK Custom Products]

Kevin, is there one you can use and run your stock cover?

Yes. it is a popular option. You can see it at this LINK for the M8, like you have, and at this LINK for the Twin Cam.

Here is a photo of an M8 with our Outlaw 606 air cleaner system with the stock cover.

Here is a photo of a Twin Cam with our Outlaw 606 air cleaner system with the stock cover.

Kevin

 

[Colleydog]

Next question Kevin, or any of my trike talk family, I’m already running rc components slip on exhaust, can I also add the 606 air cleaner, or at that point will I need to run a tuner or am I still good running stock tune?

 

[Jack Klarich]

Next question Kevin, or any of my trike talk family, I’m already running rc components slip on exhaust, can I also add the 606 air cleaner, or at that point will I need to run a tuner or am I still good running stock tune?

The short answer is yes. The M8 engines can easily get away with muffler changes BUT when you change the AC also it would be a good idea to be able to add more fuel, not to mention if you are not using HD parts including their tuner you will void your power train warranty

 

[DK Custom Products]

Next question Kevin, or any of my trike talk family, I’m already running rc components slip on exhaust, can I also add the 606 air cleaner, or at that point will I need to run a tuner or am I still good running stock tune?

Hey Steve, sorry, just saw this post.

You can add the 606 air cleaner, along with your exhaust and you do not need a tuner. The M8 is not lean running like the Twin Cams, plus it adjusts for changes better than the Twin Cams.

You can see from very useful information about how well the M8 has their AFR set up at this LINK. There are AFR charts showing that even when going from stock to opened up exhaust and a free flowing air cleaner, the AFR stays in a very good spot.

That said, the M8, whether stock or with open exhaust and air cleaner, will benefit from an improved tune...but it is more from timing changes than AFR changes.

For an overview of tuning options, take a look at this Report LINK.

Kevin

 

[Securtis12]

Fuzzy question


Did you just tap and drill that backplate? I have the same one and want to get the oil out of my intake.

 

[Fearless]

Did you just tap and drill that backplate? I have the same one and want to get the oil out of my intake.

That is exactly what I did to my Boyesen X force intake made me nervous but I purchased the kit off Kevin. At first I ran the line out front not a good result it put junk all over the underside of the trike. I next ran it back with hose to hard line and down and out. :good: Stay Safe Stay Home. Fred

 

[ShapeShifter]

Late but here's my 606 HiFlow Outlaw Setup

I have DK's 606 Air Cleaner and their Premium Catch Can with EBS Breather installed on my Twin Cam Engine. These are working well for me and maintenance of the Air Cleaner and Catch Can is extremely easy.

HiFlow 606 Air Cleaner w/Premium Catch Can EBS Breather System



K&N Rain Sock (minimize water reaching filter)



Stock Twin Cam Cover

 

[Halfnormal]

@FuzzyWuzHe

Looks like your bike's catch is smiling at you!

 

[Jack Klarich]

Here is a link to D K Customs doing the drill and tap the stand offs on the air cleaner for the breather bolts

http://www.dkcustomproducts.com/acl/diy-external-breather-system.htm

 

[DK Custom Products]

Hey Fuzzy,

Dwayne grabbed one of your photos above and put it into a youtube video...thought you might like to see it. It is around the 14:15 mark in the video below.



Kevin

 

[Halfnormal]

Well I finally took a look at what I have installed. Looks like just an aftermarket filter. My question is does changing out the 103 stock cover really improve air flow or does the whole assembly need to be replaced to see any improvement?

 

[DK Custom Products]

Well I finally took a look at what I have installed. Looks like just an aftermarket filter. My question is does changing out the 103 stock cover really improve air flow or does the whole assembly need to be replaced to see any improvement?

Don't know that you can change just the cover on a stock set up.

Harley's, for many years, have (thanks to the EPA) been using air BOXES. They are two part. A plastic backplate that is 1/2 of the box and the cover which matches that backplate/box is the other half.

This results in the filter element being enclosed with just a small opening up front. This is done to reduce the noise generated by the engine sucking air in, plus it hides a bit of the internal engine noise too.

The "upside" of this is that it makes the engine noise a bit quieter so Harley can have a bit louder exhaust note and still meet the EPA noise standards.

The downside is that it chokes down the air flow into the engine AND that enclosed box makes the air going into the engine hotter...these both reduce performance. See complete report on this subject HERE.

To see noticeable improvement there are two choices:

1. Get a Performance Intake, like at this LINK This will take care of all the performance inhibiting issues regarding the stock air cleaner set-up.

2. Cut away the plastic on the factory backplate, leaving only the back, flat portion in place. Use a free flowing filter element. Install an External Breather System, and you can then use your factory cover and get a noticeable improvement in performance.

Kevin

 

[Halfnormal]

Don't know that you can change just the cover on a stock set up.

Upon more research, I found out it is the Arlen Ness Big Sucker air filter upgrade. It reuses half of the stock cover. Because of its design, I would have to purchase a new air filter to use a different custom cover.

 

[DK Custom Products]

Upon more research, I found out it is the Arlen Ness Big Sucker air filter upgrade. It reuses half of the stock cover. Because of its design, I would have to purchase a new air filter to use a different custom cover.

Ok, you have the AN BS air cleaner...that is more than just a filter upgrade, that is an entirely new air cleaner set-up. You can run the stock cover, like you are, or you can run a whole bunch of different covers.

Check out this LINK. Any cover at that link that says it will fit a 606 or an 0800, will also fit your AN BS. I believe there are 10 or 11 choices there.

You may want to look at adding an External Breather System, it will make it perform better, and your engine will thank you. The EBS's at this LINK will fit the AN BS.

The photo below is what I am running on my TG, and it will fit on your AN BS.

Kevin

 

[Halfnormal]

The air filter in there has a big lip on it like this.

 

[DK Custom Products]

The air filter in there has a big lip on it like this.

View attachment 86409

Ah, you have a specialized set up that AN made for 3 years.

This is what a typical AN BS looks like for the Twin Cams-

Unless you change the filter element, you can only use the factory cover.

Kevin

 

[Halfnormal]

That is what I thought. Thanks for your help.