3G Hemi fuel: EFI vs Carb

Joe Dokes said
Fifth: I would like to see some deliberate collection of specific instructions to help people with the swap. For example, for Megasquirt your engine profile, your tune, is a .msq file. I'd like to see some of these shared. Not that it would be the exact tune you'd need, but it might be close enough to get someone going. I'd like to see some FAST tunes shared as well, and some AEMs. For the carb guys I'd like to see some specific recommendations on jetting, metering rods, and accelerator pump sizing. Why because this engine swap is hard, and the magazines don't give us information other than a sales brochure for solution that only costs X amount of dollars.

I would have loved information like this when I was starting. I never was convinced I could tune my carb to work with my engine and the stock cam, but that's because I'd never tuned a carb before. I remember asking if anyone had some suggestions for jet sizes back before I had the engine in the car (may have been in the fuel and air thread instead of Hemi) and got nothing. Then, when I got the Megasquirt I was right back to square one all over again. Luckily there are some programs out there that will spit out a rough base map based on engine size and horsepower/torque ratings. If I wouldn't have found one of those my car would probably still run weird. My first go at it the engine ran fine, but there was still some vibration in the car. When I tried the new base map it was like a whole different car, glass smooth running down the road, I never even knew it could run like that. I think that may be one reason so many people are hesitant to do the swap. Sure I can bolt an engine in, but if I can't get it to run what's the point? If I knew there was a base map out there that could get me stock like performance that's one more reason to dive in and start the build.

I think it would be awesome if we started up a sticky thread of Hemi tunes. I know a few members have been kind enough to share some MSD ignition maps with me and I really appreciated it when I was having trouble figuring out some stumbling issues. I passed on what I had to another member who contacted me with a similar problem in the hope of getting his problem figured out.

I'd be happy to share my current Megasquirt tune for someone to use as a base map as well as my MSD map since I have a mostly stock engine. It would be really cool if the site here could host the files so we wouldn't have to worry about maintaining files on some file sharing service. There have been too many times I've gotten all excited because I finally thought I found a file I needed only to find out the link was busted and then trying to get a hold of the original poster to see if it was still out there somewhere. Start up a thread and try to really manage it to just be for info like a tech section. Post your engine specs and any tuning files you have for it like Megasquirt, FAST, MSD, factory PCM Diablo stuff, etc. I'll be the first to throw some files in if the mods would like to get something started.