Anybody have a map available to them for a safe amount of ignition advance from vac to 15psi on stock turbo (1991 13BT)



FMIC

550/1600

Walbro

FPR

FJO



I have the fuel map taken care of I just dont know how to set up ignition map. Is hitmans stock 13bt map safe, should I advance more? I need it to be safe on 91 Pump.

Check out the haltch map section, I have a map with ignition mapping setup very good.

make sure your timing is setup correctly and it is 100% accurate!

94: Is your map for a s5 turbo?



Vosko: I lined up timing hitmans method, will check with timing light before boosting.

No its not, but the timing should be the same.

yup verify with a timing light to make sure its zero'd out. its very important. timing is gonna be very similar for differrent setups. if you want you can also run very little flat across the board just to make sure the E6K is controlling the timing right

i dont think the 2 maps are gonna be that different, but i was gonna say if you're unsure go about 1/2 way and see how the car likes it



mike

Yeah just listen to make sure you don't get any ignition breakup while your going wide open. If you do you may want to retard it a bit. The ignition in my map works perfect for me, if I raise it 3 degrees it begins to break up in the higher rpms.

I try not to run over 17' adv on the plugs at 15 psi and no more than 15' adv above 17psi to be safe from 7000 rpm up... Loosing a few HP and not killing the engine is :bigthumg: ....

yah, sometimes less timing is not a bad thing.



mike