Diamond G (or) kunytec Holeshot?
#1
Has anyone determined which holeshot module works better on the P650/700? I've seen several posts here that lead me to believe that the DG doesn't always deliver much of a bottom end improvement.
Thanks,
Jeff
Thanks,
Jeff
#6
I love mine. You can research the forums, the dg5 has few complaints if any from those who run them. I tried the moose and a dyna cdi and switched back. I don't want to re-jet or loose any reliability. The cdi will run a few mph on top more, but I haven't met anyone on the trail running one that didn't carry the stock one for fear of getting stranded like some here have. I wanted more power, but only with 100% stock reliability.
#7
Did you notice much difference in speed? And I guess your saying it's reliable.
Thanks!
Thanks!
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#8
Here is a quote from another forum that pretty much summarizes module HP. If the author wants to claim it and talk about it on here, that's his choice. I happen to believe what he's saying here:
I get a lot of calls about how much horsepower our modules make, and how we claim you can't get upper RPM horsepower out of them, and some of our competitors claim their's can.
Well, after spending the weekend designing in the low speed retard option into our CDI (you can turn it off if you don't like it), we found out the dirt on it:
The Mitsubishi CDI has a "special" feature that causes the CDI to stop ramping the timing up if the wheel speed is less than 7KPH/5MPH. If you are under that speed, then it holds the timing at 12 degrees BTDC. This neuters the power output of the engine, and prevents the quad from wheeling.
If the wheels are spinning faster than the 7KPH/5MPH, then the CDI allows the map to climb to the specified 28 degrees, and the module has no effect.
Holding the timing at 12 degrees kills about 6HP from the engine, so when you install a module (ours, DG's, KunyTec, Highlifter, Moose, Bob's Modules Inc, or whatever), you just get that ~6HP back off idle until 7KPH/5MPH.
Here's the interesting thing:
The stock units come jetted lean for a couple of reasons. One is for emissions, the other is because of the low speed retard. If you are running optimum jetting (not the lean, stock jetting), then you'll find that the lack of timing advance off idle causes a lot of unburnt fuel to remain in the engine, and it techincally runs really rich for a while after the low speed retard is turned off (something lean jetting would have cured). This robs a ton of power from the engine (in the tune of 4-6HP).
With a module on, then the engine runs properly, and you don't get that loss (hence the reason a lot of people claim they get more power throughout the powerband.) If you hadn't stabbed the throttle from a stop, and had started off slow until you hit that 7KPH/5MPH, and then stabbed the throttle, you'd see no difference with or without the module in.
If you check out Highlifter.com, and check the Dyno graph for the Highlifter ICM, you'll see the difference I'm talking about. Problem about their curve is that it ONLY APPLIES if you stabbed the throttle from a dead stop. If they would have run the dyno passes starting at 7KPH/5MPH, you'd see no difference between the two curves. I'm not sure if they are just ignorant to the above knowledge, or they chose to deceive the public with the plots.
The only way you can get more horsepower in the mid to upper powerband is a degree key or aftermarket CDI. Or a little snort of juice (NOS).
I get a lot of calls about how much horsepower our modules make, and how we claim you can't get upper RPM horsepower out of them, and some of our competitors claim their's can.
Well, after spending the weekend designing in the low speed retard option into our CDI (you can turn it off if you don't like it), we found out the dirt on it:
The Mitsubishi CDI has a "special" feature that causes the CDI to stop ramping the timing up if the wheel speed is less than 7KPH/5MPH. If you are under that speed, then it holds the timing at 12 degrees BTDC. This neuters the power output of the engine, and prevents the quad from wheeling.
If the wheels are spinning faster than the 7KPH/5MPH, then the CDI allows the map to climb to the specified 28 degrees, and the module has no effect.
Holding the timing at 12 degrees kills about 6HP from the engine, so when you install a module (ours, DG's, KunyTec, Highlifter, Moose, Bob's Modules Inc, or whatever), you just get that ~6HP back off idle until 7KPH/5MPH.
Here's the interesting thing:
The stock units come jetted lean for a couple of reasons. One is for emissions, the other is because of the low speed retard. If you are running optimum jetting (not the lean, stock jetting), then you'll find that the lack of timing advance off idle causes a lot of unburnt fuel to remain in the engine, and it techincally runs really rich for a while after the low speed retard is turned off (something lean jetting would have cured). This robs a ton of power from the engine (in the tune of 4-6HP).
With a module on, then the engine runs properly, and you don't get that loss (hence the reason a lot of people claim they get more power throughout the powerband.) If you hadn't stabbed the throttle from a stop, and had started off slow until you hit that 7KPH/5MPH, and then stabbed the throttle, you'd see no difference with or without the module in.
If you check out Highlifter.com, and check the Dyno graph for the Highlifter ICM, you'll see the difference I'm talking about. Problem about their curve is that it ONLY APPLIES if you stabbed the throttle from a dead stop. If they would have run the dyno passes starting at 7KPH/5MPH, you'd see no difference between the two curves. I'm not sure if they are just ignorant to the above knowledge, or they chose to deceive the public with the plots.
The only way you can get more horsepower in the mid to upper powerband is a degree key or aftermarket CDI. Or a little snort of juice (NOS).
#10
I don't know what module that guy has, but I have raced my bf750 against a stock one and I always beat him, even if starting at 10mph rolls. I'd guess they I stop pulling ahed at around 5omph. He is always about 4 quads back by then. Maybe that is why dg says the dg5 was different and made for the bf750. I looked into this all before when dg said the bf750 had a different cdi and dyna, hl, and everyone else said they are all the same. Then later they changed their tune and said it is different. Seems like dg always knows stuff first, then the others act like nobody else knew about it when they tell it so go figure.


