Advice on these mods...
#11
#12
I've no idea if this is true in this case or not, but it is a simple matter to have the ECM set a "bit" if it has ever been flashed by a NonOEM tuner. That bit can then be read later to determine is it had ever been modified......
Lon
#13
#15
I would ask yourself what kind of power do you want before dropping a bunch of money. I'm sure the dealer told you what to expect with the stage 2 447 cam. There are dyno sheets on here and on youtube with the results. Most have seen mid-low 100's tq and mid-high 90's hp. If you think that will meet your needs, go for it. I have the 447 cam in my stage 3 and it pulls good from 2500-4500 rpms. As far as the header, i.m.o its the least bang for the buck. Get a good flowing intake. If you're going SE, I found the heavy breather works well.
#16
I would ask yourself what kind of power do you want before dropping a bunch of money. I'm sure the dealer told you what to expect with the stage 2 447 cam. There are dyno sheets on here and on youtube with the results. Most have seen mid-low 100's tq and mid-high 90's hp. If you think that will meet your needs, go for it. I have the 447 cam in my stage 3 and it pulls good from 2500-4500 rpms. As far as the header, i.m.o its the least bang for the buck. Get a good flowing intake. If you're going SE, I found the heavy breather works well.
#18
#19
I was told the same thing by the service manager at my local dealer. He said it stores the last date of modification that HD can see when it's plugged into digital tech. If yours shows an update the day before service it would raise flags but I am not sure what they could do about it if the original tune was in there.