No ... That is NOT allowed .....

 

That's what I've heard.....

Two days ago, I did a Seafoam treatment after hearing so much about it. I rode for a while after putting it in and didn't notice a bit of difference. But yesterday, I swear it felt like I had gained 10 HP to the rear end. I don't *think* I was imagining things, because it really did feel more perky.

 

If it's you're one and only ride or die daily rider this is sound advice.

Since my FXD is my play bike I went with mild top end cam setup. It comes on around 3K.

 

I hear the stock carb can handle 90hp. So if you want to save $300-500 that's where I'd do it

 

I don't know what you have in mind on budget on all this, but here's something to consider:

You can get a new S&S 111 for about $5k. Your good-condition, stock Evo motor will bring something like $1500 to $2k on Ebay, particularly if you take good videos of it running before you pull it.

So, for something like a net cost of $3k to $3.5k (add in a few hundred more for shipping), you can upgrade to a 111.

If you take that same money and put it into your stocker (and you'll get there quick if you start looking at bumping the compression, new pistons, head work, etc), you still won't have either the power or torque of the 111, and your engine will be working a lot harder than that 111 to get there.

 

I sometimes fantasize about 124 cubic inches and a 6-speed and I may go there someday. But I was mainly hoping that there was a "cheap" (relatively speaking) way to add about 10 or so horses. I guess the S&S air cleaner claims are a bit hokey, based on what I've been reading.

 

I believe the performance increases will be in the wide open throttle area, most of us don't spend much time there, but that is just me.

 

Ah. Great point and I hadn't thought about that. I'm mainly looking for a boost in the "cruising" RPM range.

 

I had and 88 evo it was a real dog so I pulled the heads off it polished the intake and exhaust ports with my Dremel intake and exhaust put in Andrews high torque cam in it and S&S Super G High spark ignition and some Cycle Shack pipes and that thing was Tire shredding pulling wheelies in 3rd gear I loved it did I mention it was a FLH dresser real heavy bike the only problem I ever had was keeping the back tire on it it would be smooth in two months

 

Zombie Thread!

OP- what did you ever decide to do? A high flow filter and a re-jet will make a difference but its not much. I guesstimate maybe 5 or 6 HP gain, if that. The real difference I noticed when I did it is throttle response is snappier and quicker.