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Originally Posted by AlmostStock
My question is why do they do this and is there any way to make these FI pcm controlled engines deliver instant engine braking on throttle release like the old carburetors did? Thanks.
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Yes, there are a couple params in the ECM software that control this and can be changed. You however need to purchase the software/hardware to do this, or find a shop that can. The IAC reaction speed and throttle shutdown can be modified close faster.
Jim
SR Racing