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I run one, DJ runs one, and Money runs one.

I cant say that I felt any differance becasue I changed 40 things all at once. And now that I have switched to alky I havent even got it tuned yet.
 

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I run one on my little bike and i know with it being super fat on alky it fires right up even after purging the crap out of it.

Dont know if it made it faster but i know it starts it.
 

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They definately put out more energy, enough to scramble the computer on a dyno. Do your dyno guy a favor and change it before you get there. Gain wise.... well there isnt any, you either have enough spark to light the fire or you don't, and if you don't it will be pretty obvious to not only you, but everybody else at the track. You'll be shootin ducks if you don't have enough fire.
 

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QUOTE (REDLINE @ Oct 4 2008, 02:40 AM) index.php?act=findpost&pid=12382They definately put out more energy, enough to scramble the computer on a dyno. Do your dyno guy a favor and change it before you get there. Gain wise.... well there isnt any, you either have enough spark to light the fire or you don't, and if you don't it will be pretty obvious to not only you, but everybody else at the track. You'll be shootin ducks if you don't have enough fire.
by that meaning then a pvl would do the same thing and nology coil use a pvl coil. but say you got a pvl with 2 big coils is putting out the same energy to screw up a dyno computer??
 

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PVL's will whack out a dyno as well, it doesnt seem to be quite as bad, not every one of them will, but most. No I dont buy into it Dave, My thought is that you either have enough energy or you don't, I don't see the reason for overkill. There is an oppotunity to loose power there if the stock coil doesnt fire, but no opportunity to gain extra power just because you have a hotter spark to light the combustion. After all; you are only STARTING the flame with the spark, once the flame lights, it takes off itself, I would use a propane bbq as an example. Misfires on the dyno become very evident, showing gaps in the torque line, you can see exactly at what rpm you lost spark and where it came back. I have spent an awful lot of time on the dyno trying to exctract every last bit of hp and torque, and have never seen any improvement in either with a hotter spark..... unless the stocker was failing to light it already. Trust me, if I had seen an improvement I would have em on my bikes, but I don't. If you show up to the dyno with either a pvl or a nology coil, be prepared for it take more time (and more money).
 

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QUOTE (REDLINE @ Oct 4 2008, 09:02 AM) index.php?act=findpost&pid=12397PVL's will whack out a dyno as well, it doesnt seem to be quite as bad, not every one of them will, but most. No I dont buy into it Dave, My thought is that you either have enough energy or you don't, I don't see the reason for overkill. There is an oppotunity to loose power there if the stock coil doesnt fire, but no opportunity to gain extra power just because you have a hotter spark to light the combustion. After all; you are only STARTING the flame with the spark, once the flame lights, it takes off itself, I would use a propane bbq as an example. Misfires on the dyno become very evident, showing gaps in the torque line, you can see exactly at what rpm you lost spark and where it came back. I have spent an awful lot of time on the dyno trying to exctract every last bit of hp and torque, and have never seen any improvement in either with a hotter spark..... unless the stocker was failing to light it already. Trust me, if I had seen an improvement I would have em on my bikes, but I don't. If you show up to the dyno with either a pvl or a nology coil, be prepared for it take more time (and more money).


I dynoed my bike a few times with a pvl a few years back..... I cant remember having any problems but the one time we had to block it some how. I cant remember why or even how we did it. To long ago.lol
 

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I HATE pvl's, they are too hard to adjust, the curve is too harsh, I don't trust the "no key" thing in the flywheel, on and on and on. If they made one with a programmable curve so I could change it, they would be the shiz, but they don't. I have tried several times to shield with peices of metal etc. to keep the electromagnetic interference from getting to the computer, but they didnt work. For them to work they should have a ground rod into the concrete grounding and surrounding.
 

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QUOTE (dajogejr @ Oct 4 2008, 08:34 PM) index.php?act=findpost&pid=12445I don't get the whole PVL thing myself...too much headache if you ask me...
ZACTLY.... we are used to changing timing by degrees, not thousandths. So I have to get on the computer and figure out how many thousands I need to move to go 3 degrees, depending on the stroke and rod length, then remove the gas tank, bla bla bla. And if you have a big motor.......... forget about it, you ARE going to break your small basket gear and kickstart gear from too much initial timing. They are just not worth the hassle.
 

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QUOTE (REDLINE @ Oct 4 2008, 07:46 PM) index.php?act=findpost&pid=12451ZACTLY.... we are used to changing timing by degrees, not thousandths. So I have to get on the computer and figure out how many thousands I need to move to go 3 degrees, depending on the stroke and rod length, then remove the gas tank, bla bla bla. And if you have a big motor.......... forget about it, you ARE going to break your small basket gear and kickstart gear from too much initial timing. They are just not worth the hassle.

This is just mho dont take no offence in any way. I love my pvl very nice set up . 90% of the banshee that run at our track runs them and wont go stock for anything
 

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Marriage made in heaven 332, I have several customers that I have made take those pvl's off and buy stock ignitions before I would waste my time tuning on, sounds like you might have several guys with stockers sitting around? I'll trade you straight across........
 

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QUOTE (REDLINE @ Oct 5 2008, 01:20 AM) index.php?act=findpost&pid=12479Marriage made in heaven 332, I have several customers that I have made take those pvl's off and buy stock ignitions before I would waste my time tuning on, sounds like you might have several guys with stockers sitting around? I'll trade you straight across........

How many complete pvl's do you have. I will see what I can dig up.
 

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QUOTE (REDLINE @ Oct 5 2008, 01:20 AM) index.php?act=findpost&pid=12479Marriage made in heaven 332, I have several customers that I have made take those pvl's off and buy stock ignitions before I would waste my time tuning on
That's probably a good thing!

I had several PVL issues ranging from not being able to get an answer out the manufacturer regard timing performance of the unit, to having performance problems created by not being able to tune a couple of engines without alot of trial and error screwing around because of the somewhat random performance of the stupid PVL.
 
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