3SGTE -Does changing the idle timing vary the timing at 7000 rpm ?

Re: 3SGTE -Does changing the idle timing vary the timing at 7000 rpm ? (TwoDogs)

Thu, 07 Jun 2018 15:17:56 GMT

Thanks, Kojab

Re: 3SGTE -Does changing the idle timing vary the timing at 7000 rpm ? (kojab)

Thu, 07 Jun 2018 15:00:26 GMT

TwoDogs
Does the ECU vary the ignition timing at 7000rpm based on various sensor information ?
or is it simply a calculation against rpm ?

Yes the ECU will vary the ignition timing at 7000rpm based on map sensor/maf sensor readings along with water and air temperature also knock sensor

TwoDogs
The BGB says idle timing for the SW20 is 10o BTDC, but presumes the engine will boost to 11psi and is using 94 octane fuel (according to KO racing - not sure where they got the info). I use 98 octane fuel and I'm only getting 8.5 psi currently, so could use a few more degrees of timing. Easy enough to do, but does +3 degrees at idle mean I will get +3 degrees everywhere ?

cheers
Nige

As a general rule, yes you will get +3 degrees everywhere if it is not set correctly at idle.

3SGTE -Does changing the idle timing vary the timing at 7000 rpm ? (TwoDogs)

Thu, 07 Jun 2018 11:23:22 GMT

Does the ECU vary the ignition timing at 7000rpm based on various sensor information ?
or is it simply a calculation against rpm ?

The BGB says idle timing for the SW20 is 10o BTDC, but presumes the engine will boost to 11psi and is using 94 octane fuel (according to KO racing - not sure where they got the info). I use 98 octane fuel and I'm only getting 8.5 psi currently, so could use a few more degrees of timing. Easy enough to do, but does +3 degrees at idle mean I will get +3 degrees everywhere ?

cheers
Nige