1.8T AEB - Giac PC 16 - fuel pressure, part throttle behavior
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Joined: Jan 2010
Posts: 1,668
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From: Brighton, MI
1.8T AEB - Giac PC 16 - fuel pressure, part throttle behavior
I have the standard PC16 setup (315cc, AFPR, FMIC, DP).
Car runs tame (15 psi boost) under WOT runs.
But under part throttle, all hell breaks loose. Boost climbs to 25 psi (or higher?), car runs like a bat out of hell (scary).
Fuel pressure was initially set low (under 2.7 bar = 39 psi); I raised it to the giac stock 3.0 (43.5 psi) bar.
Only change I noticed is that it now take a bit more throttle angle to open the gates to hell.
What is causing this part throttle behavior?
How can it be tamed?
Can spark plug or coil packs create such behavior?
I have a few VAGcom logs, not cleaned up yet.
I can take more; let me know what groups/parameters I should log),
Car runs tame (15 psi boost) under WOT runs.
But under part throttle, all hell breaks loose. Boost climbs to 25 psi (or higher?), car runs like a bat out of hell (scary).
Fuel pressure was initially set low (under 2.7 bar = 39 psi); I raised it to the giac stock 3.0 (43.5 psi) bar.
Only change I noticed is that it now take a bit more throttle angle to open the gates to hell.
What is causing this part throttle behavior?
How can it be tamed?
Can spark plug or coil packs create such behavior?
I have a few VAGcom logs, not cleaned up yet.
I can take more; let me know what groups/parameters I should log),
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