Stage 4
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Tourer
Joined: Sep 2012
Posts: 384
Likes: 15
From: Iowa City, Iowa
Stage 4
Have been considering/reading about having the street legal SE stage 4 kit installed in my 13 SG for about 6 months now. Having read many threads, I am ready to move forward, almost. Lots of comments on the pros. Would really like to hear from those that have done this what the cons may be, besides install and fuel costs. Anything I should know about that may make me regret my decision. Appreciate it!
Outstanding HDF Member
Joined: Oct 2012
Posts: 2,186
Likes: 444
From: Mi
Are you trying to keep your factory warranty?
I did the race stage 4 kit but opted to keep my se204 cam vise the 259. The only regret I got I could have got my heads done alot cheaper and I think the 58mm TB is a little to much for a 103, a built 107 would be right on the cusp of a 58mm TB. If you are not worried about warranty shop around.
I did the race stage 4 kit but opted to keep my se204 cam vise the 259. The only regret I got I could have got my heads done alot cheaper and I think the 58mm TB is a little to much for a 103, a built 107 would be right on the cusp of a 58mm TB. If you are not worried about warranty shop around.
Road Warrior
Joined: Dec 2012
Posts: 1,335
Likes: 5
From: CT
[QUOTE="EdandGrace;12262925"]Have been considering/reading about having the street legal SE stage 4 kit installed in my 13 SG for about 6 months now. Having read many threads, I am ready to move forward, almost. Lots of comments on the pros. Would really like to hear from those that have done this what the cons may be, besides install and fuel costs. Anything I should know about that may make me regret my decision. Appreciate it![ /QUOTE]
Your only regret could be you can do it cheaper and better (more power) aftermarket. Having said that, if you want to keep your warranty it's a good way to go. Fuel mileage can suffer a bit but mostly because you twist the throttle even harder and more frequently. A well tuned performance upgrade can get similar mpg results as stock.
Sent from my Galaxy Nexus
Your only regret could be you can do it cheaper and better (more power) aftermarket. Having said that, if you want to keep your warranty it's a good way to go. Fuel mileage can suffer a bit but mostly because you twist the throttle even harder and more frequently. A well tuned performance upgrade can get similar mpg results as stock.
Sent from my Galaxy Nexus
Thread Starter
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Tourer
Joined: Sep 2012
Posts: 384
Likes: 15
From: Iowa City, Iowa
Are you trying to keep your factory warranty?
I did the race stage 4 kit but opted to keep my se204 cam vise the 259. The only regret I got I could have got my heads done alot cheaper and I think the 58mm TB is a little to much for a 103, a built 107 would be right on the cusp of a 58mm TB. If you are not worried about warranty shop around.
I did the race stage 4 kit but opted to keep my se204 cam vise the 259. The only regret I got I could have got my heads done alot cheaper and I think the 58mm TB is a little to much for a 103, a built 107 would be right on the cusp of a 58mm TB. If you are not worried about warranty shop around.
Outstanding HDF Member
Joined: Oct 2012
Posts: 2,186
Likes: 444
From: Mi
It has to deal with the velocity and air speed that air can fill the chamber, I actually lost a peak number of torque when I upgraded from my cam'd 103 I went from 106 to 105 tq but I did gain 5 hp with the addition of the heads and TB. I did carry my tq curve further and I know peak numbers dont matter but I was told that I could get more by switching back to stock TB but did not want to pay for another tune. search the forums for se58mm TB you can read up on it.
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Tourer
Joined: Sep 2012
Posts: 384
Likes: 15
From: Iowa City, Iowa
What would be the price approximately?
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Outstanding HDF Member
Joined: Oct 2012
Posts: 2,186
Likes: 444
From: Mi
2200 installed if you went with Level b heads add another 879
Last edited by Juice; Jan 30, 2014 at 07:56 PM.
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The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
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