ok i have an 87 iroc z28 wit the 350 tpi and i want to advance the timing but i just want to make sure the injectors timing doesnt run off the distributor timing ..and also wut would b the best advance if it do able

 

The ECM uses the same signal from the distributor to operate the injectors that the distributor does to time spark. It doesn't matter for the injectors, since they are batch fired. Altering the distributor advance will not affect fuel delivery.

 

thank you very much for the response it was exactly wut i was lookin for

 

what fuel are you running?
6* stock
8* is usually good for 87..
12-15* for 93...

make sure you unplug the white and brown wire from the pick up..

 

fuel is 91 octane most of the time and 94 on special ocassions..lol or when ever im around a sunoco everywhere esle around me only has 91 so i was thinking around 10*??

 

start at 8* and advance it 2* until it pings....when it pings back it off 2*

 

aiight thank you very much