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Hello everyone, I swapped the f20b into my 98 prelude keeping the stock ecu swapped all obd2a sensors onto my f20b and still have a pretty bad idle surge after warming which leads to stalling of motor once the thermostat kicks in. I've checked vacuum lines, replaced fitv, iacv I cleaned with carb cleaner someone mentioned this could still be issue but wouldn't it throw an engine code? Timing is good, my buddy noticed I kept the f20b im and fuel rail and says I should swap to h22a IM, fuel rail, and injectors which I would have to buy, thought I'd see if you guys thought this would be worth swapping? Didn't think the injectors would throw it off this bad but it is a 2 litre compared to a 2.2, message me for my whats app if you want to hear the idle surge. Thanks guys.
 
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