Quote from jojopontiac on May 20, 2019, 5:01 am

 

hi I'm French ! so escage me already for my english! I am using the translator . thank you I explain my problem here is a fitech 400 hp for 2 years. I have an external pump 380lh. everything works perfectly until I decide to change it from exactly the same pump. I just added a check valve and change the filters. here is my concern when I normally roll no worries or when I am full gas either. my concern is that when I roll cool and I drop the gas my afr rises to 20 and she coughs. it takes 2 to 3 seconds to recover in these normal afr! thank you for helping me.