8
hey guys i just purchased a 2005 m7 with a bmp 800 bb. the sled runs awesome at home (1400ft) is there anyway that i can determine if it is going to run well at 6000-10000 before i get out there?
BMP 800 big bore
- Thread starter 8rmk00
- Start date
8
anyone??
they dont work good past about 5k feet! There are a few of em around here that I ride with and they all run like crap!
8
what causes them to run bad. rich, lean?
B
I had a 06 M7 with BMP big bore Kit and twin D+D pipes , on some days it would pull every thing on the hill . On other days it didn't matter what I tryed it wouldn't pull the scum off rice pudding. I pulled my hair out trying to make it work right then I sold it to a buddy . He removed the fuel injestion and went 40 mm carbs now ti is all ways a kick *** sled . Cat can't seem to get the mapping to work constant on the M7 . I have a buddy that has the same problem with a stock M7 and the dealers say there is nothing they can do to fix it.
O
X2 here, some days it was the best thing on the hill some days it would hardly run off the trailer. never could get it figured out so i sold it this past summer! only time it was consistant was around my house (1000 ft)
My older BMP with Wiseco forged pistons ran fine at elevation, but you'll probably need to tune it. The Altitude compensation works for 3000' elev. ranges when running a box. What domes do you have in it? low or high comp? I run F-35's at 10K. What weight in the primary? What springs? Boondocker box? and what #'s you running?
The new BMP cast piston kit/high comp with jaw twins has been a PITA, but i'm working on it. It has a trouble spot transitioning from 6700 to 7800. It will only transition well and not load up when you lean out the top-end to the point that it's way too lean. Had my box reprogrammed and now has a 7250 range and some transition adjustments that should help dial that in.
The new BMP cast piston kit/high comp with jaw twins has been a PITA, but i'm working on it. It has a trouble spot transitioning from 6700 to 7800. It will only transition well and not load up when you lean out the top-end to the point that it's way too lean. Had my box reprogrammed and now has a 7250 range and some transition adjustments that should help dial that in.
8
i just bought the sled this year the owner said that he installed the kit last december so maybe AC pistons? the only other mods besides the big bore is a bmp can and bdx intake. the numbers in my boondocker box r from bikeman i was was told.
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if forgot to mention it also has a timing key and something with the exhaust valves
M
Put it back to stock timing, timing advance doesn't work in elevation.
8
is it a big process to take out the timing key?
M
It isn't the easiest thing if you have never done it before, but if your mechanically inclined, you shouldn't have any problem.
8
would you guys recomend taking in out b4 my first trip or try it first to c how it runs? and if so what r the chances it will run good at elevation?
T
X3 here somedays it was pulling your arms off and other days you where being pulled back with piston on your plugs. pm Shain he has a fix.
S
800
Have heard issues with the BD boxes.Poss try a different box migth help you out.
Have heard issues with the BD boxes.Poss try a different box migth help you out.
8
well i have not tested in out west yet but i just want a reliable sled and doesn`t need tinkering all the time. and maybe i shouldn`t have bought this sled with the bb kit but i am crossing my fingers!
