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107" Big Bore Kit and Dyno Testing by Fuel Moto
#1511
01-31-2015, 01:59 PM
Stellar HDF Member
I got Fuelmoto 2in1in2 stainless header pipe. And Supertrapp Stout 4" mufflers. Got the mufflers for a 09 model cause I've gotten older and don't want a lot of noise.
It took about a year for it to burn out some so the sound would get better. I didn't want a lot of noise.
You may not like a 2in1 at 1st but they will grow on you. And the performance is awsum. And putting a 2in1 on or taking the back wheel off is much easier.
I'm thinking about going back to a 2in1 Supertrapp Supermeg later on. It just don't come with both size bungs.
I have both a Thunder-Max and a Power Vision.
I really like the Fuelmoto 2in1 exhaust. The mufflers just too loud for me.
If it had both the 12mm and 18mm bungs and a quieter muffler I would buy it later on.
If you go ahead and get the headwork.
You can always do the exhaust in the future.
You will have the main part of your bike done.The motor.
Exhaust is a lot cheaper and easier to do later on as you know.
Hope this helps.
Here is the Supertrapp 4" Stouts.
SuperTrapp Stout 4" Slip-Ons are brewed to perfection! Paul Yaffe's Bagger Nation - YouTube
It took about a year for it to burn out some so the sound would get better. I didn't want a lot of noise.
You may not like a 2in1 at 1st but they will grow on you. And the performance is awsum. And putting a 2in1 on or taking the back wheel off is much easier.
I'm thinking about going back to a 2in1 Supertrapp Supermeg later on. It just don't come with both size bungs.
I have both a Thunder-Max and a Power Vision.
I really like the Fuelmoto 2in1 exhaust. The mufflers just too loud for me.
If it had both the 12mm and 18mm bungs and a quieter muffler I would buy it later on.
If you go ahead and get the headwork.
You can always do the exhaust in the future.
You will have the main part of your bike done.The motor.
Exhaust is a lot cheaper and easier to do later on as you know.
Hope this helps.
Here is the Supertrapp 4" Stouts.
SuperTrapp Stout 4" Slip-Ons are brewed to perfection! Paul Yaffe's Bagger Nation - YouTube
Good points though, I suppose the 2-into-1 would grow on me, and also good point of getting the engine work done all at once. Unfortunately it would need to by dynoed again to get it really well tuned.
I think one of the big value adds to having FM install it all is getting on their dyno with their expertise. It's tough to package that expertise and send it to us, as good as they are over the phone, nothing beats having it there in their shop. ..and please don't take this as a slam to anyone elses expertise, I know there are a lot of very good tuners out there. We have one close to me, but he's a bit of a mad scientist.
Just made my reservations for the Country Inn and Suites, Little Chute Wisconsin. .6 miles from Fuel Moto USA.
#1512
01-31-2015, 02:01 PM
I'll look around for an extra $G as I can see you guys all believe in it, and I can also understand the increased airflow is going to do nothing but improve performance. But the question I have is how much of a bang for the buck is this to me given my fairly sane riding style?
All of the above statements regarding the Level B head porting have been general in nature, but not really helping how much improvement and where that improvment might be in the power band. For instance when I was talking to FuelMoto and we talked about the need for the larger throttle body and injectors, Brian was clear that this was an important improvement and a big bang for my $, an improvement of up to 10%.
But, as we discussed my general riding style and touring I do, (I can ride for weeks and not exceed 4Krpm) I don't do a lot of WOT riding. Spending an additional $900 isn't really chump change for me, and I didn't get from FM that it would be a significant improvement in performance across the power band where I do most of my riding. It really isn't important for me to need to shave acouple 10ths of a second off my quarter mile time.
I wish I could see some dyno before/after charts that showed the difference the porting made.
I may still do it, I'll definitely talk to FM again and lok in the Harley Fund for some extra dinero, but I'm still less than clear about the cost/benefit.
All of the above statements regarding the Level B head porting have been general in nature, but not really helping how much improvement and where that improvment might be in the power band. For instance when I was talking to FuelMoto and we talked about the need for the larger throttle body and injectors, Brian was clear that this was an important improvement and a big bang for my $, an improvement of up to 10%.
But, as we discussed my general riding style and touring I do, (I can ride for weeks and not exceed 4Krpm) I don't do a lot of WOT riding. Spending an additional $900 isn't really chump change for me, and I didn't get from FM that it would be a significant improvement in performance across the power band where I do most of my riding. It really isn't important for me to need to shave acouple 10ths of a second off my quarter mile time.
I wish I could see some dyno before/after charts that showed the difference the porting made.
I may still do it, I'll definitely talk to FM again and lok in the Harley Fund for some extra dinero, but I'm still less than clear about the cost/benefit.
In talking with Keith and Jaime at FM it was strongly suggested that if I were to go with the new heads, that I would should also upgrade my exhaust system to realize the headwork benefits. I currently have my stock 2007 FLHTC headers (not true duals) with simple Supertrapp SE mufflers, paired with K&N air fliter.
The suggestion was a 2-into-1 set up. So, more money for exhausts is another consideration when it comes to doing the head work. Not only that, but I don't care for the looks of 2-into-1 setups, not to mention that I really like the sound of my bike now, and am not too keen on changing that.
Are there any dual exhaust systems (not 2-into-1) that you guys are using for the 107 big bore kit with heads? Keith didn't have any suggestions, limiting my choices to 2-into-1 only.
Given this I've pretty much decided to just go for the basic kit, with upgraded TB/injectors, and variable pressure clutch for my first stage, and then do a tad more research into exhausts and also gain the knowledge of how happy I'll be with the basic build, before I do a "stage 2" and go back for the new heads.
The suggestion was a 2-into-1 set up. So, more money for exhausts is another consideration when it comes to doing the head work. Not only that, but I don't care for the looks of 2-into-1 setups, not to mention that I really like the sound of my bike now, and am not too keen on changing that.
Are there any dual exhaust systems (not 2-into-1) that you guys are using for the 107 big bore kit with heads? Keith didn't have any suggestions, limiting my choices to 2-into-1 only.
Given this I've pretty much decided to just go for the basic kit, with upgraded TB/injectors, and variable pressure clutch for my first stage, and then do a tad more research into exhausts and also gain the knowledge of how happy I'll be with the basic build, before I do a "stage 2" and go back for the new heads.
You can do the head work or exhaust later if desired.
#1513
01-31-2015, 02:25 PM
The tune could probably wait a bit, just use the tune provided by Fuelmoto, get it tuned later when your money recovers. When my bike was thrown on the dyno, the tune was spot on until the upper RPMs WOT it was running rich. He took some fuel off on the top end and minor tweeks and she is running even better. Better gas mileage, but I don't watch the amount of fuel I'm going through, I'm just holding on and grinning from ear to ear! I wish I didn't do the tune so soon, I was just anxious to see the results. I want to swap to a 2n1 exhaust and maybe a TB to squeeze some extra ponies out of her. I want to get to 120HP, I only got 112 hp/126tq
#1514
01-31-2015, 05:35 PM
That setup is sweet. Unfortunately I don't think it will fit my 07 with the older model frame.
Good points though, I suppose the 2-into-1 would grow on me, and also good point of getting the engine work done all at once. Unfortunately it would need to by dynoed again to get it really well tuned.
I think one of the big value adds to having FM install it all is getting on their dyno with their expertise. It's tough to package that expertise and send it to us, as good as they are over the phone, nothing beats having it there in their shop. ..and please don't take this as a slam to anyone elses expertise, I know there are a lot of very good tuners out there. We have one close to me, but he's a bit of a mad scientist.
Just made my reservations for the Country Inn and Suites, Little Chute Wisconsin. .6 miles from Fuel Moto USA.
Good points though, I suppose the 2-into-1 would grow on me, and also good point of getting the engine work done all at once. Unfortunately it would need to by dynoed again to get it really well tuned.
I think one of the big value adds to having FM install it all is getting on their dyno with their expertise. It's tough to package that expertise and send it to us, as good as they are over the phone, nothing beats having it there in their shop. ..and please don't take this as a slam to anyone elses expertise, I know there are a lot of very good tuners out there. We have one close to me, but he's a bit of a mad scientist.
Just made my reservations for the Country Inn and Suites, Little Chute Wisconsin. .6 miles from Fuel Moto USA.
And have Jamie put a Power Vision on it. And load a map and dyno it.
You will be good.
If you don't do the head work, you will be saying to yourself. Wonder what it would be like if I had of done the heads.
You are gonna get used to this after about a year. And say I think I want a little more.
But bottom line. This is a very good kit. Puts out real good power.
The kit is not the strongest 107 kit as Fuelmoto has said. And it ain't the weakest kit either.
Later on if you change your exhaust, and if its poppin or anything. you use the map in it and send it to jamie and request another one and tell him the changes you have made.
Fuelmoto has a lot of maps that they have dynoed. And after they send you a map. You can call and talk to them.
They will tell you what to do, and send the map in your bike to them. Jamie can edit it on his computer and send you a map back.
If push comes to shove, if you can get the 2 in 1 exhaust with the 18mm bungs and get the auto tune kit to go with the Power Vision.
When you pull the torque up toward 125 or 126 and HP at around 115 you can feel it pull harder with the head work.
And you know with a Harley Torque is what you are looking for.
I ran all day today on less than a tank of fuel on the 107 kit with the Power Vision. I was gettin 39-41 mpg. Was riding 2 up and had the bike full of clothes, rain coats. Sweatshirts and all.
And the compression that the kit was done in was 10.5.1
With the 555 cams, you need the compression at 10.5.1 to wake up the motor.
If I'm wrong ask Fuelmoto.
They are the ones that designed the kit. And been puttin them together and dynoing them over and over.
I put my own kit together with the help of a buddy. Its a lot of work too.
Last edited by cardboard; 01-31-2015 at 05:39 PM.
#1516
01-31-2015, 07:29 PM
I was judging by a dyno sheet on Fuel Moto
107, tw555 no head work, it was actually 106hp and 118 trq
Here is the link, last sheet on the page
http://www.fuelmotousa.com/performance-cams.html
107, tw555 no head work, it was actually 106hp and 118 trq
Here is the link, last sheet on the page
http://www.fuelmotousa.com/performance-cams.html
#1517
01-31-2015, 11:25 PM
The tune could probably wait a bit, just use the tune provided by Fuelmoto, get it tuned later when your money recovers. When my bike was thrown on the dyno, the tune was spot on until the upper RPMs WOT it was running rich. He took some fuel off on the top end and minor tweeks and she is running even better. Better gas mileage, but I don't watch the amount of fuel I'm going through, I'm just holding on and grinning from ear to ear! I wish I didn't do the tune so soon, I was just anxious to see the results. I want to swap to a 2n1 exhaust and maybe a TB to squeeze some extra ponies out of her. I want to get to 120HP, I only got 112 hp/126tq
#1519
02-01-2015, 01:22 AM
Seasoned HDF Member
The tune could probably wait a bit, just use the tune provided by Fuelmoto, get it tuned later when your money recovers. When my bike was thrown on the dyno, the tune was spot on until the upper RPMs WOT it was running rich. He took some fuel off on the top end and minor tweeks and she is running even better. Better gas mileage, but I don't watch the amount of fuel I'm going through, I'm just holding on and grinning from ear to ear! I wish I didn't do the tune so soon, I was just anxious to see the results. I want to swap to a 2n1 exhaust and maybe a TB to squeeze some extra ponies out of her. I want to get to 120HP, I only got 112 hp/126tq
#1520
02-01-2015, 08:11 AM