Advanced timing at idle-S5 T2
#1
Advanced timing at idle-S5 T2
Freshly rebuilt S5 T2 engine but I can't get the timing right . My friend and I have the same set-up so it helps to compare .
when i set the CAS at factory position, I have something like 15 BTDC . Idle is set at 800 rpm hot engine and all . Shorting the test connector doesn't seem to make any difference tho but i know the circuit works cause I can get the codes from the CEL . I have managed to time it by slotting a bit more the CAS to retard it to 5 ATDC . I saw somewhere that putting the CAS drive gear backwards would cause this . So I thought I was all good , was going to let it like that .
Then I decided to double-check that .Placed both engines at the leading mark, I took both CAS caps off and inspect the the teeth & magnets to be align the same way but they wern't ??? To get that result , I had to put my CAS back to it's normal position . that means the drive gear is set right .
So my question is : What the hell can give me 20 degrees advance at 800 rpm with test connector grounded ? Idle is super smooth .. see's engine load or something ???Already tried different ECU,Boost sensor
p.s. : evrything is blocked off on the intake , no ac , no omp but connected . so maybe that's why the test connector doesn't change anything . cause both cars are like that and his gets abused perfectly
Thanks for your help guys , I'm out of ideas
when i set the CAS at factory position, I have something like 15 BTDC . Idle is set at 800 rpm hot engine and all . Shorting the test connector doesn't seem to make any difference tho but i know the circuit works cause I can get the codes from the CEL . I have managed to time it by slotting a bit more the CAS to retard it to 5 ATDC . I saw somewhere that putting the CAS drive gear backwards would cause this . So I thought I was all good , was going to let it like that .
Then I decided to double-check that .Placed both engines at the leading mark, I took both CAS caps off and inspect the the teeth & magnets to be align the same way but they wern't ??? To get that result , I had to put my CAS back to it's normal position . that means the drive gear is set right .
So my question is : What the hell can give me 20 degrees advance at 800 rpm with test connector grounded ? Idle is super smooth .. see's engine load or something ???Already tried different ECU,Boost sensor
p.s. : evrything is blocked off on the intake , no ac , no omp but connected . so maybe that's why the test connector doesn't change anything . cause both cars are like that and his gets abused perfectly
Thanks for your help guys , I'm out of ideas
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#10
Thanks guys ! Endin up finding the problem The narrow range tps was set to high. I had 1.7v at the ecu instead of 1v . Has i was lowering it down , around 1.2v the timing dropped drastically. So I started playing around sit the adjustements on both tps sensors to get to 750 rpm and a 1v narrow range input and now the CAS sits wright in the middle
Thanks everybody
Thanks everybody
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