The Bog is GONE!!!

[DusterB]

Finally after 2 years on my 06m7 the bog is gone thanks to a boondocker box! I tried everything under the sun before the box it fix it but nothing worked. My last mods in conjuction to the box was a tsled intake, some mo-flows and sno-stuff can.

Question: After some testing - I had to ADD fuel to the 3000 (01 01 00 00) 5000 (01 03 00 00) to get rid of the bog. Now the sled seems a little on the week side as far as power from 3000 - 6000 rpm. I know the M7's are lacking in low end torque but and maybe that's what I'm know feeling? (before the bdbox it had pretty good snap with the gold/orange @67g heeled)

Now I have messed with the oiler from time to time but have always turned it back to stock. (Just scared of burning down the seld i guess) I know some sleds came 50:1 (not sure what mine is but it uses the bluemarble like Willis uses crack ) and maybe that was the issue all along...

Back to my question, I've never ran a bdbox before and not really sure what I should be expecting out of the box. I added enough fuel to clear up the bog - should I add additional fuel to wake the sled up? I've checked other fourms and none talk about a stock sled (no pipe and ypipe anyway)

Thanks in advance!

 

[Knizer8hun]

More fuel took the bog away?

That seems weird; I thought that most bogs had rich settings as the culparate?

 

[Wiskey7]

More Fuel = NO BOG?

I also agree that is wierd, on my 06 M7 I installed a fuel pressure reg to reduce the fuel press from 48PSI to 43PSI and no more bog, I would go the other way with the numbers on the BD Box, JMO.

 

[IShartd]

Your never gonna be able to tell unless your reading your Plugs. Take a day and just test. Make pulls at certain RPMs and pull the plugs and read. Many threads dedicated to this on Snowest, do a search, youll find what your lookin for.

 

[DusterB]

I also agree that is wierd, on my 06 M7 I installed a fuel pressure reg to reduce the fuel press from 48PSI to 43PSI and no more bog, I would go the other way with the numbers on the BD Box, JMO.

I'd would also agree BUT when I subtracted fuel it still ran poorly. My fuel pressure is 43psi stock. - I started with 3000: -01 -01 00 00, 5000: -1 -2 00 00 and -02 -03 00 00.

I guess I was so F++king excited that this sled didn't bog anymore I stopped and ran with what seemed to work. It seems like the box might have a mind of its own... for example with everything set to 00's the machine runs a little rougher and at a lower idle 1400 rpm compared to 1600 - 1800 with the direct connection of the ecu and also a little sluggish... As mentioned before I have no experience with a bdbox and wondering if this is a "normal" situation or just more plague for my sled...?

 

[GlennRMK]

I had added a number or two in the 3 and 5000 settings in order to get rid of that bog

A lean bog can be worse then a rich bog.

I don't why people think its weird

 

[WyoBoy1000]

Its all about F/P, But I would through away that tsled intake have yet to see it better a sled, had many people say they work but then watch a stock sled beat them. I'd keep adding fuel, have you tried adding fuel in the high range, keep adding until it gets worse then go back til you think your in the power. check plugs throughout rpm ranges you might be able to get more power out of it at all rpm ranges.

 

[jakecease]

I just ran my sled today and was experiencing a low end bog also 06 m7 w/800 kit, I also run a O2 gauge and noticed with the sled idling I was getting a 13.2 reading which was a little rich (leaned it out to -2,-3,0@3000. After that adjustment I was getting 14.0/14.2ish numbers at idle

When running the sled at around 5000 rpms the 02 gauge was reading around 14.7-15.0 so at 5000 I added 3,4,0@5000. Now i'm getting consistant 13.5ish numbers @5000rpm I have no idea what my fuel pressure is at but these were just my experiences w/an O2 gauge hooked up.

I still have a rich spot at around 7000rpm that i'm working out... but all in all its rips pretty good for a little 800.

 

[KMMAC]

Back in the day of carbs. you also had to add fuel to get rid of a bog. Which makes sense if you think about it. With less fuel in the mix most engines have nothing for the explosion to take place so all you you get is hesitation add a little excelerant and boom away it goes. The more excelerant the bigger the boom to a point.

 

[Elkhorn]

I added fuel to mine for the low end bog, especiall with an intake

 

[fastgas]

The low-end lean bog is a well known issue on M7's, and with the slightly leaner programming on the 06's it can be a real issue at higher elevations. With a stock intake and pipe, you can pull some fuel on the top end for a little more power (esp on the 05's), but I suggest doing this with EGT's or carefully checking plugs. I've heard that certain exhaust cans and intake mods can make tuning a little more tricky (some require more fuel, some less). I'd suggest getting a stock baseline - if you have the plug-in jumper, you can quickly unplug the box and plug the jumper in it's place, or you can load an unused map with all zeros into the box (should run same as stock), or if you suspect the box is disrupting something (usually due to wiring issues - be sure to check sled's ground wire connected on back of bolt holding steering support on MAG side of tunnel), plug the stock injector connectors back on the injectors.

 

[mtn_extreme]

You could potentially reduce numbers all across the board and just use the acel mode for a fuel boost on the hole shot to get rid of the bog. This might give you better response thru the range.

 

[ndmtnsledder]

I had to do the same thing on mine to get rid of the bog. I have a pipe, timing key, and reeds with a 06 program on ECU. I'm still removing a lot of fuel in my upper RPMs.

 

[Big Kahuna]

I just finished an RKT m7-8 big bore and think i was mistaking my low end problem for being rich, but i am learning now that i might actually be lean instead.
I plan on going out on monday and increasing my 3,000 and 5,000 numbers (constantly checking plugs of course) and see if i can solve this problem.

BK

 

[polemite.productions]

my 05 m7 bogged quite often the first season i got it. stock pipe, can, and intake. i bought it used, and the previous owner had the ecu reflashed with the 06 program.
last season i put on an rkt head and a can, and the bogging cleared up quite a bit. still happened once in a while, but not often.
this summer i was thinking about how cat went to a 2 plug per cyl set up after the m7. that made me think that the spark must have been weak up to that point. so now i'm trying out the direct hits spark amplifiers, and so far so good. throttle response feels more crisp, and no bog as of yet (although i admitt i only have a couple of days on it so far). i've read here on the boards that the exhaust opening lets a lot of fumes back into the engine bay and can cause some bogging, so sealing up that hole around the pipe will be the next thing i do.

what i've been doing seems to be working, but that in combination with what jakecease is doing with the o2 sensor and a/f ratio meter would most likely yeild the best results for performance and reliability.

 

[SANDBAGGER]

You could potentially reduce numbers all across the board and just use the acel mode for a fuel boost on the hole shot to get rid of the bog. This might give you better response thru the range.

Your right, but you might confuse people now. Haha. Bogs can be both lean and /or rich. Popping or is it cutting out or lazy ? 1 or 2 points really shouldn't make a difference as the amount is so small. Its also an issue with the altimeter possibly as it changes the Fuel mapp , the bog might only happen at specific altitudes. I have pulled filters off before just to see if the bog worsens or is aleviated when it occurs consistently. I think there have been several reasons the M's have had bogs, making it even harder to reliably diagnose.

 

[Trom]

What altitude?

Question: After some testing - I had to ADD fuel to the 3000 (01 01 00 00) 5000 (01 03 00 00) to get rid of the bog. Now the sled seems a little on the week side as far as power from 3000 - 6000 rpm. I know the M7's are lacking in low end torque but and maybe that's what I'm know feeling? (before the bdbox it had pretty good snap with the gold/orange @67g heeled)

What altitude you running at?

 

[powder junky]

Fastgas is right on. These things have a lean bog. The tsled intake doesn't help either. I had the snopro air box on mine at first. It got better without it. Mark at Union Bay told me to get rid of it. He said the stock intake gets the air moving faster thru the system and this helps with the bog too. Makes sense when you compare the stock setup to the mod setup.

 

[Uller]

DusterB,

I've got the 06 M7 EFI too. Added T-sled intake, RKT Head, SLP Can, D&D Y Pipe, BMP Pipe Mod, and BD Box. I at first added fuel like you and it helped the bog on the bottom but going from bottom to mid still got a bog. Did a lot of reading on here and heard of others noticing that it is rich on the bottom, lean in the mid, and rich on top. I then got the EGT guage and started really playing with the settings. I have taken away fuel on the bottom, added in the mid, and taken away on the top. I have rather consistent EGT #'s (around 1200), what seems like a much better running engine, and no more bog.

I'll start the sled up and get the exact #'s and post them up tomorrow.

As for getting rid of the T-sled intake, I have to disagree. Yes, you can get rid of or lessen the bog by removing it but, the intake (at least to me) isn't really about more cool air or less weight. It all has to do with the stock intake getting covered with snow and completely choking off the sled. I would rather deal with a small bog at a known RPM than having my sled shut down to 4000 RPM cause it can't get air and having to one hand it to clear the snow off the intake while pulling a side hill.

 

[DusterB]

7500 - 10k ft

I played more with mine at 7500 ft and still never found the lowend snap I once had. The lower altitude helped but never the less. At least my sled is consistant when I stab the throttle - I'm happy (well almost)

Uller, that's alot of mods! I'm stock except for the can and tsled air box.

My opinion on the airbox is if you don't like alot of noise on your sled - stay stock. I vented my hood and added a snostuff can and I can barely stand it.

I put on the 10.4 and it really helped the snap but still sluggish at 3500-4500 rpm. I lost 15mph track speed though with the 10.4.