I have a cpi kit installed on my car. It's an easy install, the fuel pump on my car was a but annoying to deal with but that was the only difficult/stressful part of the install.
Your intercooler/charge pipe bung will also play a part in how annoying/difficult/easy it is to install. Also plays a part in the performance from what I understand. I have an IMR intercooler, the bung is higher on the charge pipe which means that my bumper doesn't need to come off to install. It also means that I don't have as long to atomize the ethanol and get more gains. How much is being left on the table, who knows?
One thing I don't like is that it's reliant on the JB4 to operate. I have an ecu tune. I don't like the idea of 2 items trying ro tell the car what to do. Too much potential for errors or issues and people have run into that. I'm not sure if that's been the case with cpi mod. I have not had it happen with cpi. But I did experience earlier this year my ecu and jb4 not playing well together.
E85 burns cleaner than pump gas. Our cars a GDI engines which deal with carbon build up. Someone with more knowledge than me can weigh in on if we would benefit from it and have less carbon build up by running more E. I'm sure it probably has to due with where fuel is sprayed etc and o just don't know the answer. So at best, maybe there's added bonus.
Performance. Your car will pull and pull and pull on top end. Another member actually ran wmi and then ran cpi on his car. Tested it out and saw zero difference in terms of performance.
If you go cpi, your costs is lower than wmi. But depending on where you live, it could be inconvenient. There are 2 E85 pumps within a 50 mile radius of where I live. Closest one is minimum 20/25 min drive from my house. I still chose CPI knowing this. Not sure where you live but that's something you'll need to be keenly aware of. It also burns faster than pump gas which means you'll run our faster. And I think it burns leaner? Tune is even more important when running more ethanol.
I didn't want wmi because my kid is in the car and I don't feel like worrying about hoses, leaks, etc. There are tons of members that don't have those issues. I know I just don't feel like worrying. With cpi, it's set it and mostly forget it. Fuel pump crashes if cpi is not flowing. System can be buggy if you're not constantly up to date on most recent firmware. The hardware from Burger is quality, I'm happy with the system. Best person to get help you with it if you decide to go that route is
@Avant. The guy is a well of information and super helpful.
You have to slowly work your way up to higher ethanol amounts. Don't just go full blast. There will also be an adjustment period the ecu goes through because your ethanol amount can very.
For me, cpi works and I would choose it again.
