For flat sixes: Webers v MFI v EFI, Ecologically speaking… Options

[horizontally-opposed]

Currently have a 2.2E/S with Webers. It runs well and makes good power, having been tuned on the dyno and further dialed in since then, but I have discovered I'm just not a carburetor person. Fuel economy isn't good enough for the size of engine/car, and the emissions bother me—both in terms of the smells in my garage and while driving the car. And yes, we've been totally spoiled by low emissions cars.

What I'm curious about, for anyone who has lived with carbs and MFI: Is MFI noticeably cleaner and/or more efficient than carbs?

Or is EFI the way to go? I'm in no hurry on this, but curious for the experiences of others. Yes, Motronic, but I actually like the 2.2 engine.

Thanks! (IMG:style_emoticons/default/beerchug.gif)

[Sway Bar]

Interesting...I think most of 6 drivers don't really worry about efficiency and emissions, especially on 30 plus year engines:)

A small displacement engine on carbs tuned properly can be quite fuel efficient and not smell of fuel/etc. of course never as close as EFI and you have to adapt your driving style.

MFI is kinda the precursor to fuel injection and very rudimentary. Great power band but you drive it almost on and off throttle. Due to fuel injectors at 220psi you get better atomoization and fuel burn for efficiency and of course smell over Carbs but still way short of EFI.

I've done Webers- Simple, quick technology, pain to initially tune and LOTS of compromises.

I've done many MFI- T/E/S, even a real 2.7RS, and my own built 3.0L. Complicated to understand at first and to tune properly. But man that throttle response and sound in addicting.

That being said, unless you have an affinity or like to play with these technologies EFI is the way to go for the best of both worlds. Check out X-Faktory (Al Kosmol on Pelican) he's created some really cool EFI independent throttle body kits for small displacement Porsche (2.0L and up). I haven't seen any with small displacement try this yet but lots are raving about EFI on their old motors.

For me, regardless of the induction, I'm as often as safely possible into 6K/rpm so emissions and efficiency are until the next fill up (IMG:style_emoticons/default/lol-2.gif)

Cheers,

Marlon