You can remove , just be careful not to break the timing cover during removal. I think there are long set screws that run through the girdle which thread into the timing cover. Or at least that's how mine is.
I have the same issue intermittently..... I get a squeak every once in a while. Take a blow gun and blow the $hit out of the brakes. I recommend eye protection and even a dust 😷 That will clean up the dust and the low speed squeak should go away for a while. Just had to do this to mine last...
Yes, the FT170s run well on E85. I have no experience with the 160s. I considered the Injector Dynamics but I also considered the price point of each and value added for my particular situation.
I believe Fuel Tech has that info available regarding minimum pulse width on their site. The 170s...
Some feedback to share with the FT170 and FT240s. Very user friendly but the user needs to understand how to tune an aftermarket ECU. I personally run the FT170s, they haven't missed a beat. The FT170s have a little better tunability idle manners than the FT240s in the Buicks from my experience.