Hi everyone.
Since a few days I have a idle pb on my GTS 97 Viper. I have AEM EMS. My idle was perfect but a little bit too high (900 minimum), I start to modify the tune (I made it myself a few month before) and I suceed to lower it to 750rpm (I got cam, heads, 725cc injector, fuel rail ....). But sometime even cold or hot the idle goes between 1500 and 1700rpm .... up and down ... If I continu to drive the pb stop by itself and come back randomly ...
The only thing I modify to lower the tune was idle% vs idle target, ignition map, fuel map and ... Idle PW frequency (31hz instead of 15Hz).
so now I have a lower idle but unstable
As sometime it's work and sometime not, it may be the idle valve itself ? but it's weird that the valve dead as the same time as I change some parameter in the tune ...
Thanks for you help ....
Here is the screenshot of the idle parameter on the AEM. the Idle% vs idle RPM is perfect, no correction at all between 800 and 1500rpm at normal condition - when it's work
Since a few days I have a idle pb on my GTS 97 Viper. I have AEM EMS. My idle was perfect but a little bit too high (900 minimum), I start to modify the tune (I made it myself a few month before) and I suceed to lower it to 750rpm (I got cam, heads, 725cc injector, fuel rail ....). But sometime even cold or hot the idle goes between 1500 and 1700rpm .... up and down ... If I continu to drive the pb stop by itself and come back randomly ...
The only thing I modify to lower the tune was idle% vs idle target, ignition map, fuel map and ... Idle PW frequency (31hz instead of 15Hz).
so now I have a lower idle but unstable
As sometime it's work and sometime not, it may be the idle valve itself ? but it's weird that the valve dead as the same time as I change some parameter in the tune ...
Thanks for you help ....
Here is the screenshot of the idle parameter on the AEM. the Idle% vs idle RPM is perfect, no correction at all between 800 and 1500rpm at normal condition - when it's work
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