August578
Proven Member
- 101
- 28
- Jun 15, 2021
-
Eastvale,
California
Hi,
So I switched to idle air clamp because I was having trouble sealing my recirc tube on my fp intake and to the ngr type S since the diameters are different. It would keep flying off whenever the bov goes off no matter how tight I clamp it.
My main problem is that I’m having trouble tuning with the Idle Air Clamp Function.
I still have rich conditions/bad afr such as
Free revving
Getting out of gear to neutral
Bad afr’s while moving at low speeds like parking lots/structures
Rich between shifts
Coasting off throttle sometimes
I already tried playing with the values but this is the best I could get it to act, most of the time its the same result regardless if I bring the values up or down. When sitting at idle the fuel trims are perfect but whenever I start getting on the gas thats when things go funny.
A great example is at 641 seconds to 657 Seconds where after revving everything looks fine but then my STFT goes all the way to -14% causing it to have trouble balancing the correct afr and causing rough idle.
Any help is appreciated
Thanks!
So I switched to idle air clamp because I was having trouble sealing my recirc tube on my fp intake and to the ngr type S since the diameters are different. It would keep flying off whenever the bov goes off no matter how tight I clamp it.

My main problem is that I’m having trouble tuning with the Idle Air Clamp Function.
I still have rich conditions/bad afr such as
Free revving
Getting out of gear to neutral
Bad afr’s while moving at low speeds like parking lots/structures
Rich between shifts
Coasting off throttle sometimes
I already tried playing with the values but this is the best I could get it to act, most of the time its the same result regardless if I bring the values up or down. When sitting at idle the fuel trims are perfect but whenever I start getting on the gas thats when things go funny.
A great example is at 641 seconds to 657 Seconds where after revving everything looks fine but then my STFT goes all the way to -14% causing it to have trouble balancing the correct afr and causing rough idle.
Any help is appreciated
Thanks!
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