I installed my 1.6;s today and I love them quite the noticeable power increase. Install was a piece of cake but i do have one question. I got a slight variation in rpm's at idle. 25-30 max im just not sure thats normal or not. nothing leaks ant it runs great I just wasnt sure.

 

sounds normal mine does the same thing I think its the Ecm tring to compensate for the extra fuel squirted in by th 1.6s

 

sounds good thank you.

 

I'm not sure about your idle but my Mach 4's idle smooth as glass.

 

Do you think an apps relearn would help anything

 

It's been a long time since my last injector swap, but I think things should smooth out for you in a few days/weeks. I wouldn't worry too much about it, especially since some trucks have been known for the uneven idle even when stock. Hope you enjoy your new injectors!

 

I tried Mach 1.5 or 1.6s one time and they had the same idle you talked about. Must be something with the way the injectors are setup.

 

thanks for the info guys, its reall not a big deal, you really got to pay attention to even notice it but I love the power. great daily driver injector

 

Mine does it at idle and also between 17-1900 rpm when rapped up in park, I noticed this even more since the new IP