has anyone heard anything (good or bad) about hines and vance powerpak ignition modules for sportys?

For a stock sporty at stage 1 the money would be better spent
somewhere else. Once you get up to stage 2 or maybe 3 it
becomes a good idea. TheAVEARAGE stock sporty at stage 1
WILL NOT benefit from any advanced ignition at all.

I agree the only time you need an ignition module change is when you start modifying the engine such as cam changes.

I agree with Mark on that. The module sure won't make you any more power unless you can take advanage of it's higher rev limiter (such as after a cam change).

I just ordered an SE module because I will need a higher rev limiter after my next set of mods .... The thing that bothers me about the 04-05 specific SE module is that it is advertised by H-D to [decrease] timing 5 degrees at wide open throttle. I talked to Nallin about this and they don't like the idea either.

We just can't understand why H-D would have these SE modules do that.

That may be good in a boosted engine, but seems strange for an NA engine.

Ron,

The SE modules for the Twinkies do similar things...they have 2 modules...1 reduces by 5 and the other by 10.

I prefer the Crane HI4 TC programables.......that way I can set what I want and what the bike needs

ok guys, so no need for a programmable ignition until i do the cams. i've taken care of the jets (175/45), se air cleaner, and se slipons on my 96 custom. has anyone gone single fire? i was thinking about that too.

stevo. did you advance or retard rear cylinder timing and by how much? I have hi4 and have not messed with that trim pot yet.

Single fire is nice. As far as peformance goes, I don't think it really gives you more power but I think the motor works easier. After all it isn't wasting a spark. The 04's and up come with single fire as well as the big twin 88's.

G'day Ralph

Rear trim is dependant on how different the compression is between the 2 cyls.

I find if I'm about 1/2 point higher on the rear it doesn't need any offset.

Ya need to test for your own vehicle and set up......buy a box of new plugs and go out on a deserted road and do some plug chops

I didn't think the 04's came with single fire, I thought you need twin coils for that.

As far as retarding the ignition at high rpm I did think the advantage would be to advance the curve not retard it?

I suppose there must be a reason Harley do this.

The twinkies have a single fire ignition....it's 2 seperate coils in the same package....just looks like one, the 04's are the same I think, havn't bothered to look.

How much ignition advance and engine needs at different speeds is dependant on a LOT of variables.

BUT a longer duration (read BIGGER) cam will have more cylinder fill at higher RPM and therefore will need less advance due to that better cylinder fill / compression

The point of ignition spark is irrelavant...the important event is the point of MAX cylinder pressure.
Many things change the time between spark and max cyl pressure