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Engine braking under deceleration

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Old Jan 26, 2007, 07:58 AM
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Question Engine braking under deceleration

Hey, I am still new to the whole turbo scene and I my question/concern is that while at 4000rpm and up my car seems to have basically no engine braking while decelerating. I understand that the turbo is still spooling, but if when I finally get a custom tune will that fix my problem/concern? Any ideas let me know.
Old Jan 26, 2007, 08:20 AM
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mine is the same i think its b/c of the low compressio ration of the turbo cars
Old Jan 26, 2007, 08:23 AM
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05's and later evo's are like that.
If you were on more than 30-40% throttle, it will try to burn off excess fuel.
This is why it seems like you're still on slight throttle for a few seconds.

My car does the same thing.
My 03 never did it though.
It's not a big deal for me.
Old Jan 26, 2007, 08:58 AM
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Originally Posted by 19psi
05's and later evo's are like that.
If you were on more than 30-40% throttle, it will try to burn off excess fuel.
This is why it seems like you're still on slight throttle for a few seconds.
Correct, it is an emissions feature. To turn this happens to drop the RPMs back to normal - push the clutch in/out a few times, this will "turn off" is code.
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