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What's the best/easiest/cheapest way to boost the power of my 2007 America?

Can it be done keeping the stock pipes?

I understand that some people are thrilled to tinker with their motorbikes. I am not one of them. I'd rather work for the money that costs having it done.

I have 3200 miles on my America, and it's getting smoother but it has a sluggish spot around 70 mph. Unlike the Bonnie this is a bike that doesn't jump forward when you accelerate. It takes its time. If I wanted a rocket I would not have bought it but I little more oomph would be welcome, having enjoyed the brutalities of a Norton Commando in my misspent youth.

I see there is a mod to bring the cc's to 904. That's not even adding the power of half a moped, to the stock 865 cc. And it costs almost two grand to have it done if I recall correctly.

I had the AI removed. What else would give it a noticeable boost?

I read the instruction for putting the freak filter on. Unbelievable, you have to disassemble half the bike.

I'd pay $500 to the dealer for a "tune up" to give it a few more HP, but I don't even know if it is possible or worth it at all.

Comments welcome and... thanks.

Welcome.

It looks like you may want to spend some time getting aquainted with the forums listed in the Tech Talk section of our little piece of cyberspace. There are many things you can do or learn to do to tweak your bike for better performance and with out a huge cash output.

Thanks

Removing the AI won't create any noticeable boost. Put on new pipes, re-jet, remove the snorkel, stick in a UNI filter and you'll have a very noticeable difference for about your $500. including pipes, filter, etc.

One clarification, the 904BB install will cost you about $1250. more, but it is a huge difference. Don't confuse manufacturer's specifications with dyno results at the rear wheel. I gained about 25% in torque and hp above what I was getting before the BB. The "before" was with new pipes, jets, UNI, and minor carb work.

P.S. I just realized you had a 07 and I assume is a 865cc. Although you will get a noticeable improvement with the 904BB, it won't be as great as with a 790 like mine unless you change cams as well.

Well. for one thing ya shoulda got a BLACK Speedmaster. Black Speedmasters are the fastest of the breed as is documented in various and sundry threads over the years in this here forum....

pipe change is a must if you want power. do that and rejet and you will prob be happy

Frank

2007 speedmaster. I removed the ai. added a set of bubs pipes. removed the top snorkel and rejetted. The bike is not a rocket but it's pretty quick. The bubs pipes give a bit of a grumble at idle but at higher rpms, they settle down. exactly what I wanted.

There is no way that I know of to "give it more power" with out AT LEAST changing the pipes and rejetting. It IS a pain to get the carbs off for the first time but after that, you are all set to rejet with the carbs on the bike. If you don't want to take the time, bring it to your dealer and have them rejet for you. Just make sure they replace all the screws with the stainless steel allen heads that newspeedmaster.com sells.

BTW-BuBs is one of only 2 pipe makers that actually takes the time to create their pipes around performance. There are flasher pipes and there certainly are louder pipes but the perform VERY well.

If you are going to have the dealer do the work then have them changed the jets to 125's and add 1 shim to the needle.

I promise you that it will make a difference.

Most power increase for least bucks = make engine breath better:

Uni-filter = cost $50

Drill holes symetrically in aft 2 plates of mufflers (especially the slash-cut type mufflers). Drill same size holes (e.g. 1/2 inch) in the same location of each muffler plate, relative to the "thru-pipe", to make exhaust flow in each muffler identical. Listen to "noise level" after drilling each pair of holes, so as not to exceed your desired level. If you don't have the slash-cut type mufflers, be very careful that you don't drill thru side of muffler. Cost = free

Change carb main jets to size 130. Cost = $10 if you do it.

Total cost easily less than $75 and good for about 8-10% increase in power, and no loss of reliability, maintainability, etc.

--Tom

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What's the best/easiest/cheapest way to boost the power of my 2007 America?

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I lost about 30 lbs. It makes a very noticable difference, it's quiet, its cheap, it works, and you'll never bust a knuckle doing it.