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Re: Knock - Burst knock? knocking on throttle Movement
Posted: Sun Dec 06, 2015 7:46 am
by The1
is it standard TB or 69mm? usually the larger ones need that much extra.
Re: Knock - Burst knock? knocking on throttle Movement
Posted: Sun Dec 06, 2015 10:42 am
by immortality
69mm TB.
Yes, without any extra AE it feels like it has a flat spot. Quiet noticeable when cold.
Re: Knock - Burst knock? knocking on throttle Movement
Posted: Sun Dec 06, 2015 11:20 am
by vlad01
A machined TB on ecotec will need a ton more as stock ones is lipped around the plate to give the first couple of deg finer control by limiting air flow. basically acting like a 2 stage TB. Once machined the bore becomes straight and works somewhat inverse log for air flow vs TPS deg.
Re: Knock - Burst knock? knocking on throttle Movement
Posted: Sun Dec 06, 2015 1:32 pm
by immortality
Stock TB is what I call the granny mod
and its' the first thing to get changed, even my missus complained about the poor throttle response with the granny TB fitted.
Re: Knock - Burst knock? knocking on throttle Movement
Posted: Sun Dec 06, 2015 2:05 pm
by vlad01
immortality wrote:Stock TB is what I call the granny mod
and its' the first thing to get changed, even my missus complained about the poor throttle response with the granny TB fitted.
lol I know what you mean. Drove a few stock ecotecs and thought something was wrong when it did jack until half throttle. At those same throttle % my cars are certainly moving.