Couple of question!!!!

[ADD]

Got a few questions if someone could answer them for me:

1) What would happen if the EGBV or IACV actuator sticks when changing gear?

2) If i had a leaking wastegate, what effect would it have on boost,afr's and performance at full chat?

 

cheers for any help

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[Ian C]

1) What would happen if the EGBV or IACV actuator sticks when changing gear?

 

Sticking open or closed, and is this changing gear while tootling through town or a full on blast through the gears? It makes quite a difference which

 

2) If i had a leaking wastegate, what effect would it have on boost,afr's and performance at full chat?

 

Do you mean the vacuum reference leaking (it'd act like a bleed valve and boost would go up) or an exhaust gas leak before or after the wastegate?

 

-Ian

[ADD]

1) Regarding Actuators, its sticking iopen on full chat

 

2) Vacuum reference side. and what if the spring was becoming weak?

[Ian C]

1) Regarding Actuators, its sticking iopen on full chat

 

You should still come back on at full boost, if these stay open they would only cause trouble at

 

 

2) Vacuum reference side. and what if the spring was becoming weak?

 

If the vac ref leaked as I said it'd be like a bleed valve, so boost would go up. If the spring got weak, the wastegate would open easier to theoretically boost would go down - although of course we know the integral wastegate in the stockers can't control boost much at all once you decat, so under those circumstances you'd get a slower buildup of boost as the wastegate opens early.

 

Both a vac reference leak and a weak spring at once might just cancel each other out

 

-Ian

[ADD]

You should still come back on at full boost, if these stay open they would only cause trouble at

 

 

 

If the vac ref leaked as I said it'd be like a bleed valve, so boost would go up. If the spring got weak, the wastegate would open easier to theoretically boost would go down - although of course we know the integral wastegate in the stockers can't control boost much at all once you decat, so under those circumstances you'd get a slower buildup of boost as the wastegate opens early.

 

Both a vac reference leak and a weak spring at once might just cancel each other out

 

-Ian

 

Thats brilliant thank you Ian, ya certainly know ya stuff!!

Sounds like my crank pulley is on its way out so im gonna get that changed then i can send you through my data log.