does anyone know how much the advance is on v8 hp ignition modules?

its about 32 deg on my mefi3, i believe.

not the total timing how much does it advance from base? usually there marked like v8 26 or v8 24 but we cant find this v8 hp module and im trying to set the base so the total is at 34

Not sure what ignition your speaking of but a TB-IV Thunderbolt HP module is 20*.
The TB-V is 20* as well but has a few other variables associated with the curve.
Base 14* and full 34* on average.
Dave

Also set the timing at full advance (~3000rpm) and let it fall back to wherever on the TB-IV.
The TB-V must be grounded to lock out the timing and set at the recommended # at idle.
Dave

i just got done setting the timiming on mine. the book says 8 deg base with the system in service mode. what service mode does is just keep the computer from screwing with it while you are trying to set it... so i set mine at 8 as factory and at full advance it goes directly to the 40 mark on both motors... so to me that means my mefi3 has 32 deg of advance built into it. when you take it out of service mode after you set it, the timing moves all over the place until you rev it and then it appears to stabilize at 36 to 38...

thanks for the advice i think im going to set it at 10 on the stands which hopfully will give me around 30 total but i will check for shure when i take it out this weekend then after break in ill move it up to 34

Right On!

Here is a link to specs on the Mercury modules.

http://www.mtboats.com/mercuryigniti...cemodules.html

thanks rbtnt thats awsome very helpfull