Poor mans 2 into 1?

Alright, I read on this board here quite some time ago that you could seal off the left crossover pipe on a dresser and effectively simulate a 2 into 1 pipes performance...After a lot of internal debating I decided to give it a try in hopes of adding a little more power or efficiency since I had the whole motor apart this winter anyway. With the big bore and heads I did this winter I obviously have more power...but I'm not sure if it has anything to do with the pipe mods. In fact, I have a friend who has a similar set up...and his seems to have a lot more power. Let me break it down: Mine has Branch flowed heads/ his has HTCC SE, Mine 10.5:1 J&E pistons/ His 10.5:1 HTCC SE pistons, Mine Hypercharger aircleaner/ His KuryAkyn Twin Velocity aircleaner, Mine SE 203 cams/ His SE 203 cams, Mine Dakota kid modified 42mm carb/ His fuel injected flashed for stage, Mine KhromeWerks slipons/ His Vance and Hines slipons....I have a 2001 FLHT, he has a 2003 FLTR...both running 95"

Sorry to add so much detail, but the question is: Should his bike make so much more power that its plainly evident in seat of the pants testing?...Is fuel injection that much better?..Or do you think my pipe mod is restricting air flow and costing me that much power. We haven't had them dynoed yet but I bet him money his would out dyno me and I'm not the betting type If you don't have a definite answer, but have a sound understanding of performance mods please give an opinion...I'm strongly considering cutting the slug out of that Y-pipe, but if thats not the problem I'm just wasting time... I do like that it doesn't pop all the way down a hill from cold air being pulled back through the left pipe when the throttle is closed...which I was told was also a benefit of the mod.

Thanks for your input HRK. I was on a limited budget this winter so cams didn't get redone...but gear drive cams and roller rocker arms will more than likely be next. I fell for the dealers generic line of BS when he told me "what you really need with a bagger is torque....and these SE 203's are made for just that". If I'd only found this site or another before I ordered...I've already paid for them once. I hear a lot of people say good things about the TW-37 cams...but they are only a .510 lift like my 203's...are they really that good of a performer? If they do perform that well with the lower lift I wouldn't need to spend the extra $400.00 on roller rocker arms...cuz as I'm told they are only necessary with lifts over .550. I'm not a drag racer...I just want arm stretching power in every gear up to 5000rpm. Right now I like how mine pulls from 2800-4000 rpm...below or above that, it sucks! My friends setup really pulls that way all the way to about 5500 with the same cams...thats why I can't figure the power difference unless its the fuel injection. The other option I can't verify is: my friend had asked for the SE 211 cams to be put in...but the dealer told him it would be an additional cost as he bought a "kit" which included the SE 203's...so my friend backed out of it...but maybe they changed their minds and switched them out before he took delivery??

P.S. CD, what wrong with the email notification feature? Several times I've selected instant email notification to a thread and never gotten one since the changover.

Dealer switched cams at birth! Read all about it!

An unscrupulous dealer? Seahag reports the possibility of a cam switch at the birth of his bud's performance package could this be true?

EFI usually lags behind in HP / Torque until modified. The throttle response can be quicker but generally a carb seems to out perform the EFI when everything is equal.

Before making any more changes, get a baseline of your bikes HP / TQ curve after proper tuning. Send one to HRK and me. Like HRK I suspect you have some hidden power in tuning. Like HRK also speculates and air cleaner on / off run will probably fee up some serious ponies.

The Hypecharger really does not flow very well compared to other air cleaner setups. For a stock of near stock bike itworks pretty well. With your setup you need a lot more flow in your air cleaner element.

I run a Force Sidewinder on my 95" RK and it made a pretty significant difference in power between SE stage I and it.

You might be surprised at how much you gain by freeing up the air flow.

'Tis all about total flow and velocity...everything else is easy right HRK?

I suppose I could look into those forcewinders...if they are the ones made by D&M custom cycle...they are actually made about 25 miles from where I live. I always did like the look of those hyperchargers though....and I remember when I bought it 3 years ago they were advertising that it was good for motors up to 120"...bull****; cuz in the latest KuryAkyn catalog they claim the standard model is only good for an 88" and you need to go to the pro series for 95" and bigger.

P.S. Ok I don't know what happened but now I'm getting notifications of new postings...thanks.

Force Winders are made by Force Motor Products out of Lake Havasu AZ. They are great folks and all my distributors carry them. I think look kind of cool on a RK, gives it a little bit of Hot Rod look. And, they flow a TON of air.

I would still HIGHLY recommend getting your Dyno runs first before changing a thing. Otherwise, you might be throwing away $$$ you can use for other things.
Like gear drive cams, feuling oil pump, 2-1 headers and a new wife and the lawyer etc, etc.

I wonder if removing the butterflies would help flow some more air with the hypercharger? I looked into those forcewinders....whoa $400.00, they'd better flow more air at double the price of a hypercharger. Maybe I could perforate the trap door and put a screen on for some more air flow...any thoughts? I'll take your advise and not do anything until I've got a dyno sheet for you guys to look at...I'll have to check around and see who's doing the next dyno shootout...they always run specials where its either one free pull or a nominal fee like $10.00.