 For flat sixes: Webers v MFI v EFI, Ecologically speaking… |
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| horizontally-opposed |
 Jun 5 2020, 03:34 PM
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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 
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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) |
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| echocanyons |
Jun 7 2020, 12:17 PM
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Advanced Member Group: Benefactors Posts: 2,094 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California 
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I have essentially the same setup as Steve in my 914 using the Rasant harness and the AEM infinity EMS.
As far as maximizing power and tune ability this is the only way to go. Also, by far the cheapest option to go to twin plugs. Definitely not cheap though. Attached thumbnail(s)  Attached image(s)  
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| horizontally-opposed |
Jun 7 2020, 12:53 PM
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#3
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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
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QUOTE(echocanyons @ Jun 7 2020, 11:17 AM)  I have essentially the same setup as Steve in my 914 using the Rasant harness and the AEM infinity EMS. As far as maximizing power and tune ability this is the only way to go. Also, by far the cheapest option to go to twin plugs. Definitely not cheap though. Thanks for posting this—looks great, and your and Steve's positive experiences go a long way with me. Sounds like, for me anyway, EFI > carbs or MFI. I tend to think of EFI as a "$10-15k" hurdle, but selling my running/setup Webers and Clewett/Electromotive crankfire ignition system may offset or even cover the 40mm PMO EFI setup—meaning the hurdle is more like $4850-$7200~ for AEM or Motec plus the time to do the swap and set it up. Don't need twin plugs or more power, but better drivability from a cleaner, crisper, more efficient engine certainly has its appeal. Again, thanks for the input, everyone. This is turning out to be a very informative thread. |
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Posts in this topic
horizontally-opposed For flat sixes: Webers v MFI v EFI Jun 5 2020, 03:34 PM
sixnotfour efi is the old school Boss..not so correct for the... Jun 5 2020, 03:57 PM mepstein A properly restored and tuned MFI setup will be cl... Jun 5 2020, 04:33 PM worn
Currently have a 2.2E/S with Webers. It runs well... Jun 5 2020, 04:34 PM
SirAndy Cross country I got a little better than 25 mpg wi... Jun 5 2020, 06:29 PM burton73 I can tell you one thing, MFI on an E or S when tu... Jun 5 2020, 04:53 PM colingreene EFI is the only way to go if you dont mind spendin... Jun 5 2020, 05:10 PM raynekat MFI is good for power, but not fuel economy or low... Jun 5 2020, 05:16 PM morgan_harwell MFI will not get better MPG or Emissions than woul... Jun 5 2020, 05:32 PM horizontally-opposed Appreciate the replies so far. Have driven MFI—I... Jun 5 2020, 06:19 PM Sway Bar Interesting...I think most of 6 drivers don't ... Jun 5 2020, 06:26 PM roblav1 My 2.2E targa MFI got 17 mpg highway back in 1982.... Jun 5 2020, 09:15 PM horizontally-opposed
My 2.2E targa MFI got 17 mpg highway back in 1982... Jun 6 2020, 12:35 AM Charles Freeborn https://rasantproducts.com Jun 5 2020, 09:22 PM gereed75 I have been collecting parts for a few years now t... Jun 5 2020, 09:51 PM porschetub
I have been collecting parts for a few years now ... Jun 6 2020, 12:07 AM Chris914n6
Cross country I got a little better than 25 mpg w... Jun 5 2020, 10:40 PM stevesc_us Pete,
You’ve seen my car at the EASY get togeth... Jun 5 2020, 11:32 PM gereed75 My carbed 2.4 in S trim runs good, pulls smoothly ... Jun 6 2020, 05:53 AM roblav1 A problem with carbs and MFI is that a lot of unat... Jun 6 2020, 06:52 AM horizontally-opposed
A problem with carbs and MFI is that a lot of una... Jun 6 2020, 11:22 AM jd74914
[quote name='roblav1' post='2822540' date='Jun 6 ... Jun 6 2020, 01:58 PM mb911 I plan to do 1 of 2 things on my car.. Use my webe... Jun 6 2020, 06:52 AM Mark Henry
I plan to do 1 of 2 things on my car.. Use my web... Jun 7 2020, 06:34 AM sixnotfour https://www.x-faktory.com/store/p3/EFI_Kit_RHD-EFI... Jun 6 2020, 01:36 PM roblav1 I paid $300 for 8 low mileage Suzuki ITBs, wi... Jun 6 2020, 03:24 PM sixnotfour http://forums.pelicanparts.com/search.php?do=proce... Jun 6 2020, 03:42 PM mepstein I would give Al a call about his x-faktory kit and... Jun 6 2020, 03:46 PM sixnotfour Als a great guy , would make a great article too.
... Jun 6 2020, 04:14 PM roblav1 I've got the same cams as Mark in my Carrera 3... Jun 7 2020, 07:22 AM Mark Henry
I've got the same cams as Mark in my Carrera ... Jun 7 2020, 08:36 AM roblav1
I've got the same cams as Mark in my Carrera... Jun 7 2020, 09:19 AM horizontally-opposed I can see where PMO carbs are attractive to someon... Jun 7 2020, 10:07 AM Chris914n6 MS3pro is a completely different system than the M... Jun 7 2020, 12:48 PM |
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