Fuel Injected dogs
- Thread starter zer0t
- Start date
erldawg
Guru
I've got EFI on my Harley and the K-9 I just picked up. With that in mind I haven't had the K-9 long enough to form an opinion but no problems as of yet. Love it on the Harley.
Look here...EFI Topics - BIG DOG Motorcycle Forums
Look here...EFI Topics - BIG DOG Motorcycle Forums
Nomad2day
Longhair Redneck Geek
If your goals are just to change out the pipes and get on and ride the bike, you should be good to go. If you have some issues with the pipe change tripping the engine light, BDM would probably clear the alarm for you and write in the learned settings so it won't trip the engine light again.
They will have to do it for you seeing how it is a locked propriety map in the ECU.
Neil
They will have to do it for you seeing how it is a locked propriety map in the ECU.
Neil
I can't remember where I heard, or read, that the EFI was designed by Cessna? I am curious if anyone has done any serious performance mods and how that has worked out?
When I had my Ridgeback, I seriously consider the PSI big air carb for it. I haven't kept up with these at all.
When I had my Ridgeback, I seriously consider the PSI big air carb for it. I haven't kept up with these at all.
Nomad2day
Longhair Redneck Geek
Explain serious performance mods..........There are some built bikes out here.
skidmark racing
Active Member
EFI vs CARB
I have access to a brand new '07 K9 with EFI, BR pipes and cone intake (sitting in my barn). On Saturday, I am going to ride it "back to back" with my '07 K9 with carb, BR pipes, and .600 cam. My bike has about 4600 miles, the other K9 has about 250 miles. I want to check out the "seat of the pants" power of each bike, the throttle response, etc. Also want to check out any balance/weight distribution issues because I just put an open primary on my bike.
Oh yeah, it's going to be about 72 degrees and partly cloudy.
I have access to a brand new '07 K9 with EFI, BR pipes and cone intake (sitting in my barn). On Saturday, I am going to ride it "back to back" with my '07 K9 with carb, BR pipes, and .600 cam. My bike has about 4600 miles, the other K9 has about 250 miles. I want to check out the "seat of the pants" power of each bike, the throttle response, etc. Also want to check out any balance/weight distribution issues because I just put an open primary on my bike.
Oh yeah, it's going to be about 72 degrees and partly cloudy.
Nothing But Problems!!!!
I've had nothing but problems with my 2008 K-9 EFI. How would you feel if every time you left the house on your bike you had to worry if it would leave you stranded on the road? The engine simply quits, no warning nothing. The solution from Big Dog is take it to the nearest dealer (120 miles away) leave it while the dealer mechanic talks to the factory technician and hope they can figure out what the problem is within a reasonable time, say a week or two or three? I'm broke down again and trailering back to the dealer hopefully for a solution. For me, Big Dog experience, been there, done that, not again!!!!!!!!!
:down: :down: :down: :down:
I've had nothing but problems with my 2008 K-9 EFI. How would you feel if every time you left the house on your bike you had to worry if it would leave you stranded on the road? The engine simply quits, no warning nothing. The solution from Big Dog is take it to the nearest dealer (120 miles away) leave it while the dealer mechanic talks to the factory technician and hope they can figure out what the problem is within a reasonable time, say a week or two or three? I'm broke down again and trailering back to the dealer hopefully for a solution. For me, Big Dog experience, been there, done that, not again!!!!!!!!!
:down: :down: :down: :down:
skidmark racing
Active Member
EFI vs CARB
I rode the two bikes back to back. The '08 EFI has a cone air intake and BR pipes with the baffles removed. It was loud, and sounded like shit in my opinion. But, the EFI was very nice...no sputtering or hiccups. The bike pulled very strongly up to about 4000rpm. I am sure that it had more power than my '07 carbed bike before I went to the .600 cam, which I attribute to the intake set up on the '08.
After about 4000rpm, the power flattened out. Could be caused by the pipes. I didn't wring it out because it has less than 250 miles.
After about 20 miles, I went back home and got my '07. I like the .600 cam. The motor revs much faster, and on idle it has a good sound. While underway, it feels like the bike is geared significantly lower, requiring shorter shifts. Pulls 6th gear without lugging. Very noticeable difference.
As far as top end, I ran it through the gears up to about 4500rpms and about 110mph. Pulled very strong all of the way up. No noticable loss of top end, although I have ridden the bike faster than that.
Bottom line: I would not buy an EFI bike the first year out, but after the bugs are worked out, I would probably recommend EFI.
I wonder if the '07 tins would fit an '08?
EFI or not, the .600 cam is a relatively cheap mod with significant results.
Other observations about the '08 K9:
1. I don't like the design of the wheels.
2. The seat is ugly, but comfortable.
3. Low fuel light is nice, but no reserve is not.
I rode the two bikes back to back. The '08 EFI has a cone air intake and BR pipes with the baffles removed. It was loud, and sounded like shit in my opinion. But, the EFI was very nice...no sputtering or hiccups. The bike pulled very strongly up to about 4000rpm. I am sure that it had more power than my '07 carbed bike before I went to the .600 cam, which I attribute to the intake set up on the '08.
After about 4000rpm, the power flattened out. Could be caused by the pipes. I didn't wring it out because it has less than 250 miles.
After about 20 miles, I went back home and got my '07. I like the .600 cam. The motor revs much faster, and on idle it has a good sound. While underway, it feels like the bike is geared significantly lower, requiring shorter shifts. Pulls 6th gear without lugging. Very noticeable difference.
As far as top end, I ran it through the gears up to about 4500rpms and about 110mph. Pulled very strong all of the way up. No noticable loss of top end, although I have ridden the bike faster than that.
Bottom line: I would not buy an EFI bike the first year out, but after the bugs are worked out, I would probably recommend EFI.
I wonder if the '07 tins would fit an '08?
EFI or not, the .600 cam is a relatively cheap mod with significant results.
Other observations about the '08 K9:
1. I don't like the design of the wheels.
2. The seat is ugly, but comfortable.
3. Low fuel light is nice, but no reserve is not.
rutro123
Active Member
i too have an 08 k-9 efi and still do not have it running right in my opinion. also experiencing the dealer problems as well!!!! gonna try one more dealer to give it a shot to finally figure this out for me as soon as the weather breaks. has anyone experienced their efi's "overheating" very easily. i was the only bike last summer that had problems when we hit mild traffic. the bike would bogg like a fouled two stroke until i hit an open road with some air.????? WTF is this shit?:
vej
Active Member
My carbed 08 Mastiff boggs when it warms up too... especially if I'm down to the last 1.5 gallons or so. I dare not try to cross a busy intersection in a hurry, I have to feather the throttle and clutch so it won't stall.... Since it is gravity fed I attribute it to low fuel pressure... that's all I can figure. Usually when hot.
Nomad2day
Longhair Redneck Geek
On the engines missing when it gets hot is basically covered here.
S&S module also has engine
overheat protection built into the software. If the
cylinder head temperature reaches a predetermined set
point, the module begins skipping sparks. This
noticeable misfire not only alerts the rider that the
engine is overheating, but also cools the cylinder heads
with unburned fuel. If the temperature continues to
increase, the missed sparks become more frequent. This
alerts the rider that the overheating is becoming more
severe, and provides more cooling to the cylinder heads.
The third stage of overheat protection is very noticeable,
and will cause the engine to run badly at idle. The
overheat protection function can not be disabled, and is
one of the factors that allows S&S to offer increased
engine warranty on complete engines sold with the VFI
system.
The head temperture sensor is one of the mounting bolts in your intake on the front jug I think. I posted the temps it starts acting up but can look them up for you if needed. They are in the manual.
Yes it can strand you.
Only in the EFI bikes....
Neil
Nomad2day
Longhair Redneck Geek
You are electronic controlled so they can tune your bike very very lean to meet EPA restrictions. It also helps longevity of the bike as far as they are concerned and less potential for motor damage.....
Less power, less breakage or wear and tear on all the of the mechanical parts.
I thought it sucks that they made it a mounting bolt of the intake on the jug instead of a stand alone sensor.....
I am going to be nice and not say what I really think about the FI systems that come on these bikes.
Anyway,
Thermal cut #1 350 degrees.
Th engine will miss one out of every nine revs. You can ride it as you have experienced but the engine is over heating as far as the software is concerned.
Thermal Cut #2 365 degrees
The engine will miss one out of every seven revs. It is getting pretty rough to ride now.
Thermal cut #3
The engine will miss one out of every five revs. Forget riding the bike and ask your buds to bring you cold beer. The whole point to stop the firing is to allow raw fuel to help cool the motor but you are getting pissed and need something cool too.
Once the temp is below 325 it begins to ride again as it did before it made you pull over and wonder what is wrong with you sh?t, providing as the manual says, it nothing is damaged
No , carb bikes don't do this, they make it to the bar.......
Neil
Less power, less breakage or wear and tear on all the of the mechanical parts.
I thought it sucks that they made it a mounting bolt of the intake on the jug instead of a stand alone sensor.....
I am going to be nice and not say what I really think about the FI systems that come on these bikes.
Anyway,
Thermal cut #1 350 degrees.
Th engine will miss one out of every nine revs. You can ride it as you have experienced but the engine is over heating as far as the software is concerned.
Thermal Cut #2 365 degrees
The engine will miss one out of every seven revs. It is getting pretty rough to ride now.
Thermal cut #3
The engine will miss one out of every five revs. Forget riding the bike and ask your buds to bring you cold beer. The whole point to stop the firing is to allow raw fuel to help cool the motor but you are getting pissed and need something cool too.
Once the temp is below 325 it begins to ride again as it did before it made you pull over and wonder what is wrong with you sh?t, providing as the manual says, it nothing is damaged
No , carb bikes don't do this, they make it to the bar.......
Neil