Yep, that's what's called *mapping* Riley You're basically altering the ignition/fuelling parameters at certain load and speed 'sites' with a lap top plugged into the serial port. Info here Edited by: G_V_K
cheers gvk,some interesting stuff to be reading there ill admit i dont know much about that side of things madman im just using 16v ecu,original 16v dizzy with mk1 tci,.ive got the vacuum pipe from the ecu connected to the one way valve in the brake servo pipe from cylinder no.4.i know im gonna get told its not right but it ticks over bang on a grand and runs really well Edited by: riley
riley have you or cna you tell me what the ignition advances to on high rpm take its on about 7 at idle
Just looked in haynes, should have 18 deg adv due to engine speed and 20 degrees adv attributable to engine vacuum, both at 4600rpm, so that`s 38 degrees advance with both working properly, 5 to 7 degrees adv at idle.
mad man,not sure what it advances to at high rpm,would be interested to find out my self really. next time its out ill nip to my mates garage and get it checked.
thanks guys kieth sounds spot on mate as mines set to 32 degrees allt he time now question is it a)safer to leave it at 32 degress all the time b)leave it at 7 degrees all the time c)fit ecu so it advances but not properly due to only one vacum feed d)yes i kno management the right thing but bloody costly riley that would be realy helpfull thanks mate just need to chuck a gun on it at aporx 4500rpm and 1000 rpm
ive thought about this question too so the correct way is dizzyless management? ill let ya know on the advance etc...
Msad Man, if it`s not pinking at low revs I`d leave it alone although I don`t know how the lower advances would affect the engine responce? If you do feed the vacuum to the ecu you`ll have to retard the ig timing by the 20 degrees. I would have thought it may be set up to overfuel at low revs to minimise the pinking?
