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powerboy

Injector rate 1 Engine cycle vs 1/2 Engine cycle

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Hi everybody 

Short question.

I added cam sensor to our engine 2 cylinders (standard engine is only 24-2 crank sensor).
With the cam sensor adding, if i change the injector rate from 1/2 engine cycle to 1 engine cycles.

1. Value in Fuel table must me double or not?
 2. Is it need to re-tune fuel?   (in case of re-tune, i will left 1/2 engine cycle).

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5 hours ago, powerboy said:

1. Value in Fuel table must me double or not?

No the ECU takes care of this.

 

5 hours ago, powerboy said:

2. Is it need to re-tune fuel?   (in case of re-tune, i will left 1/2 engine cycle).

Assuming your injector dead times where accurate then nothing would change, but if the injector deadtimes were'nt quite correct you may need small adjustments to the fuel table at low load/idle.

 

Note if you have added a cam sensor then you should change injection mode to sequential (you wont have the 1/2 eng cycle option), then injection can be correctly timed with valve opening events.

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