Quote:
Originally Posted by integraworks
I have ESS Tune Stage II installed on my s35i and have had no issues with it up until this summer.
When I am in 2nd or 3rd gear, and accelerate hard, I get a distinct 'warble' in the power from the engine and in the exhaust note. This is most noticeable between 3000 and 5000 rpm. It is also much more noticeable on hot days and when the car has been run long and hard. (hardly noticeable when the car is cold or on cool mornings)
There are no warning lights or other indicators of anything going wrong. Just the blasted warble which is quite annoying.
I am hoping that Roman will be able to chime in here and offer some suggestions.
Thanks in advance.
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Have you tried to tune it back to stock and see if the 'warble' remains.
That should tell you if it's the tune or the engine.
Just an idea
Hope this helps.