If 10 degrees BTDC is standard timing, what is advance?

troyGT03 said:

the open loop mode only uses certain sensors such as tps,etc. when a certain temp is achieved the closed loop begins and all sensor inputs are used to tune air/fuel mixture.

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slow5poh said:

hissin, i don't know what a piezo sensor is, i have never heard of one.
And im a parts dude so i know my sensors. what is it?

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nosmatt said:

well, you need to also remember, whatever you run initial, the computer is going to add it's timing to it.........then, you need to really start worrying about your total timing. at WOT, the computer is not in closed loop.

i dont care what any sensors sans the maf, and tps are doing, you dont need any others at wide open throttle....


so, say you have an al9, that adds areound 26* on the top, you run stock intial of 10*, thats 36* total timing.

now, run 20* initial, if you have no way to tune the eec, and remove some top end timing, your going to be running 46* of total timing, which is not good on any combo i have ever seen.

the 20* may help you in the low and mid range, but at the top end, that extra 10* is costing power.
no two ways about it.


the eec tuner, and tweecer are your freind..........

fwiw, i ran 17# of boost on a 89 with 9.85:1 compression, on 91 octane cali pump gas, and it did NOT ping ever. (tfs heads)

i also ran 17* initial timing on that motor......but, i ran 15* TOTAL timing, and i ran NO boost retard device.

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