YZ 250H Ignition Advance Curves

[peter l]

I have run one of these hpi ignitions on my yz250g for about 3years ciscos originaly did mine I think they did the timing curves as well
it did pick up a couple horsepower over stock ignition  on dyno but in real world conditions the bigger horsepower curve isn't that easy to ride on tight motorcross track so I run the other curve that's in my box I don't know if they used the curves posted they told me they did there own I am going to buy the program to play around with timing curve because I think there is more to play with to smooth out power delivery but overall the actual unit has been reliable
peter

[Lozza]

OK.  Here's the HPI curve for the ignition for the model they suggest.



Just looking to compare with the original.  I found one for a 465 but obviously quite different.

Get them to supply a few extra pistons for the holes you will put in them with that curve. Especialy on that curve 2. Looks like a amature guess/stab in the dark. Will run good down low then come to an abrupt brickwall around 7000 then hole a piston if you keep reving it

Gee ever helpfull again.
I realy get a good laugh form your posts. Makes you wonder how 2 strokes ever ran with a pionts system without curves.

sigh rolleyes facepalm

[YZ250H]

Thanks for the feedback Peter.

I'll keep researching and put what I find up on here.

Cheers