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karmanbuilt |
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??? ![]() ![]() Group: Members Posts: 72 Joined: 7-July 08 From: Emmett, ID. Member No.: 9,262 Region Association: Pacific Northwest ![]() |
This topic has probably been asked before, but.........can MFI mechanical fuel injection throttle bodies be setup on the 14, instead of running EFI?? Saw PMOs MFI for the 911, soooo.............
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Cap'n Krusty |
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Cap'n Krusty ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California ![]() |
MFI and CIS are two different things in Porscheworld, and it appears you know little about either. Well setup MFI has HP advantages over carbs, CIS, and EFI. Right off the bat, there's more HP, you can use seriously rowdy cams, and the throttle response can be phenomenal. CIS makes the car pull like a tractor from minimal RPM to redline, but requires a relatively mild cam. EFI is cleaner, but also requires a mild cam and loses HP and torque. Carbs are dirty, inefficient, and offer poor fuel economy. Good throttle response, but they require serious tinkering to get as right as they can get, which isn't very. The Cap'n
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ghuff |
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This is certainly not what I expected down here. ![]() ![]() ![]() Group: Members Posts: 849 Joined: 21-May 09 From: Bodymore Murderland Member No.: 10,389 Region Association: MidAtlantic Region ![]() |
MFI and CIS are two different things in Porscheworld, and it appears you know little about either. Well setup MFI has HP advantages over carbs, CIS, and EFI. Right off the bat, there's more HP, you can use seriously rowdy cams, and the throttle response can be phenomenal. CIS makes the car pull like a tractor from minimal RPM to redline, but requires a relatively mild cam. EFI is cleaner, but also requires a mild cam and loses HP and torque. Carbs are dirty, inefficient, and offer poor fuel economy. Good throttle response, but they require serious tinkering to get as right as they can get, which isn't very. The Cap'n That is great, it appears you do not understand what EFI can do. Just how different is MFI than CIS? Both mechanical fuel injection, both garbage. If you think "rowdy cams" are a problem, then please do explain how K20 powered honda cars run cams that are so huge and locked into vtec all the time on what is essentially a stock ECU with a map sensor? These cars run enough cam to where if I posted a video of my friends running you would think it had a giant vacuum leak. He has no problems cruising around and daily driving this car. Because in the real world, EFI is EFI. "Rowdy cams" cause the same odd pulses in a honda or vw motor that they do in a porsche motor. Do you think a porsche motor with cams is super special because it makes little to no vacuum? How are you losing hp and torque with EFI? How are you metering your air and changing it for MFI? This efi makes less power talk might have been true in the 70's or 80s but this is 2009 and cars do not come with flapper airboxes or some cruddy d-jet map sensor. Carbs take tinkering and you get more tunability than you would out of CIS. |
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Lo-Fi Version | Time is now: 16th June 2024 - 03:39 PM |
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