Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

I installed a MT7 calibration but still have exhaust “popping” during decel. How do I fix this?

April 26, 2017calibration decel exhaust Fix installed

0

Posted

I installed a MT7 calibration but still have exhaust “popping” during decel. How do I fix this?

1 Answer

0

Posted

Exhaust popping is caused by too rich or too lean a mixture during overrun conditions. If the popping happens immediately after the throttle is closed, adjust the “Decel Enleanment” table lower (= richer) for the temperatures where the problem occurs. If the problem lasts for a longer period of time, try changing the AFR table 4 to 10 percent in the region the popping occurs.