Stage 4 and exhaust

[DynaBob09]

Hey guys,
I dropped of my bike for SE PRO stage 4 kit. Got what I feel is a good deal. $2600 including all parts, ACR's, labor, tax and Dyno.
Currently I have a Ventilator w/K&N air intake and screamin eagle street performance mufflers. My bike has no cats in the head pipe, I visually checked it. So my question is, how much am I loosing from my exhaust setup in this build. I prefered my slip-ons and exhaust becasue of the way they look and moderate volume level. From what I understand a good 2 into 1 are suppose to be the best performance wise but I would rather not go that route, unless I realy had to. Possibly different Slip-on's would be a better option. I hope in the end to get 105+ HP and Trq.

Thx.

[mrmetal]

What size motor do you have. Do you have the 103? If you do the stage 4 kit should put you close to 110 to 115 HP. Even with your slip ons.

[DynaBob09]

Originally Posted by mrmetal

What size motor do you have. Do you have the 103? If you do the stage 4 kit should put you close to 110 to 115 HP. Even with your slip ons.

Yes I have the 103. If I get over 110 HP & Trq I will be a happy man. That is what the SE catalog promises but I did not want to get my hopes up. The deal I am getting comes with one dyno tune so, if I do not like my numbers and want to try different slip-ons or a 2 into 1, I will have to pay for a whole new tune. I assumed my SE slip-ons are robbing power due to them not being that loud, I figured they must be restrictive. Maybe I am wrong?

[mrmetal]

The slip ons might take away around 5 HP. One thing I don't care about on that stage 4 kit is the 58mm throttle body. It's good for higher RPMs but a 55 mm throttle body would have better throttle response in the midrange area were you needed the most.But it is a pretty good kit For the money. The LSR and the thunder headers produce the best power. That LSR is probably a little bit quieter than the thunder header.

[DynaBob09]

Never saw the LSR stuff, looks interesting. Was looking at the D & D Fat Cat as I like the ground clearence but I never heard it in person. For only a 5 HP difference, I would stay with what I have now and like.

[mrmetal]

LSR link

RB Racing LSR Pro Stock Spyder 2-1 Exhausts for Harley-Davidson

[DynaBob09]

What do you about of the Samson Powerflo 3, 2 into 1 pipe? I like the look, sound and the ground clearence it gives. You know anything about its performance?