Rover v8 ignition timing

[gacksen]

Hi there,

just recently upgraded my standard RV8 plenum to a custom made twin 2x 55 jenvey plenum that we have
fabbed up. engine is a 4.6 JE unit with different cams, heads, canems ecu and decat.



this is my current spark table :



as the engine gets more air now and the AFR gauge went from high 12s to mid 13s on WOT
gave it a little bit more fuel to bring it down to the high 12sx again.

question is now leave the ignition or further advance it to 29 or 30 or go down to 27 or 26 on WOT ?

[stevieturbo]

gacksen said:

question is now leave the ignition or further advance it to 29 or 30 or go down to 27 or 26 on WOT ?

Only the dyno or some other means of performance measurement will give you that answer

[350Matt]

Stevie is right

plus if you're still on a distributor you have to tread a bit more carefully as the when of the actual spark timing is not that accurate due to the winding up of distributor mechanisms etc
if you're on coil packs then you push a bit more