I want more power 02 Road King
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,897
From: Bedford UK
I have a Supertrapp 2-into-1 and don't have a dip like that, indeed no dip at all. What you have there is criminal! If Thunderheaders are known for doing that then ditch it. Also don't go searching for outright power monsters, get something sensible, like a Supermegs. A decent system should fill in that dip and give you around 90TQ where you are currently getting less than 70TQ. A change of cams is also a great idea IMHO, which should lift the entire torque curve a decent amount.
Road Master
Joined: Dec 2007
Posts: 885
Likes: 14
From: SoCal
As was said earlier your Thunder Header makes good power, as good or better than the Fat Cat which lists for close to $1000. I would also agree with what others have said that a good tune might be the answer to your lag in power at low RPMs. If, however, you have your mind set on dropping some cash into your motor then I think the best bang for your buck would be to have your heads worked over and then get a good tune. Bigger valves, porting and even having your heads decked a bit to raise your compression would provide some significant gains in power. You already have a pretty solid build. Head work is really all that is missing. If you want to go the quick and easy route you could exchange your heads for a set of Fuel Moto's Level B CNC heads for $879. Throw a another $300 or $400 into a good tune and you would be good to go.
Sponsor
Joined: Dec 2007
Posts: 12,084
Likes: 829
I'm happy with the way she runs on the top end, but I would like a little more in the lower RPM range.
The current set up is, 95 CI, 203 cams, a Thunderheader and a Power Commander lllr (It's an old build). K&N Air Filter. It runs like a bat out of hell from about 65 MPH up, but it has a BIG dip at 2500RPM.
This is what I am thinking:
Power Commander V with Auto Tune
D&D Fatcat ( What baffle should I chose?)
Maybe change the Cam to???
I have done the SE Cam Plate upgrade.
What can I expect from these changes?
Thanks,
76FLH (still have it)
The current set up is, 95 CI, 203 cams, a Thunderheader and a Power Commander lllr (It's an old build). K&N Air Filter. It runs like a bat out of hell from about 65 MPH up, but it has a BIG dip at 2500RPM.
This is what I am thinking:
Power Commander V with Auto Tune
D&D Fatcat ( What baffle should I chose?)
Maybe change the Cam to???
I have done the SE Cam Plate upgrade.
What can I expect from these changes?
Thanks,
76FLH (still have it)
Bore to 98"
10.0 cr
Andrews 57 cams
Our Stage II Torquemaster Heads.
Smooth, reliable, fun.
Scott
Tourer
Joined: Aug 2007
Posts: 457
Likes: 6
From: Woodstock, Ga
I'm happy with the way she runs on the top end, but I would like a little more in the lower RPM range.
The current set up is, 95 CI, 203 cams, a Thunderheader and a Power Commander lllr (It's an old build). K&N Air Filter. It runs like a bat out of hell from about 65 MPH up, but it has a BIG dip at 2500RPM.
This is what I am thinking:
Power Commander V with Auto Tune
D&D Fatcat ( What baffle should I chose?)
Maybe change the Cam to???
I have done the SE Cam Plate upgrade.
What can I expect from these changes?
Thanks,
76FLH (still have it)
The current set up is, 95 CI, 203 cams, a Thunderheader and a Power Commander lllr (It's an old build). K&N Air Filter. It runs like a bat out of hell from about 65 MPH up, but it has a BIG dip at 2500RPM.
This is what I am thinking:
Power Commander V with Auto Tune
D&D Fatcat ( What baffle should I chose?)
Maybe change the Cam to???
I have done the SE Cam Plate upgrade.
What can I expect from these changes?
Thanks,
76FLH (still have it)
First thing I did was change the cam to Andrews 37 and to dial in the Theader was to bend the tabs inside the end of the pipe.... Bend them up a lil and what a difference
That Andrews 37 in a 95 kit is a great combo
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