For flat sixes: Webers v MFI v EFI, Ecologically speaking… |
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For flat sixes: Webers v MFI v EFI, Ecologically speaking… |
horizontally-opposed |
Jun 5 2020, 03:34 PM
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#1
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Advanced Member Group: Members Posts: 3,432 Joined: 12-May 04 From: San Francisco Member No.: 2,058 Region Association: None |
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) |
horizontally-opposed |
Jun 5 2020, 06:19 PM
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#2
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Advanced Member Group: Members Posts: 3,432 Joined: 12-May 04 From: San Francisco Member No.: 2,058 Region Association: None |
Appreciate the replies so far. Have driven MFI—I almost wish I hadn't!—but have not lived with it.
Agree that EFI mops then floor with MFI in most regards, with maybe the only exceptions being 1) fuel pressure > throttle response and 2) noise of that injection pump, particularly right behind my head. Probably the best-sounding Porsche street car I have driven this side of a CGT. Certainly one of them. As to price: No six induction is cheap anymore. Not PMO, not MFI, and not EFI. But MFI is indeed nutty. Last I asked, it seemed like $12k~ to collect, restore, and install. And that was years ago. What's on there now is probably the cheapest option, which is old Webers—but even these aren't cheap anymore and I suppose they can be sold to offset some of the move to EFI. Already have Clewett's crankfire trigger with Electomotive "coil" setup, but the rest of his setup isn't going to come cheap. Do like that it looks like it would work under a factory airbox while looking like carbs. Hmm… |
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