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Registered
Join Date: Nov 2005
Location: eastern pa.
Posts: 232
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Replacing motronic with megasquirt.
Ok, tell me why this is stupid...or not. If I were to replace the motronics with a megasquirt ECU I could eliminate the AFM completely. It also would be a path to a 946 plastic intake [better flow so I here] and eventually ITB's. I would think that the unit programed by Tbitz [for the 3.0 sc] would be a reasonable starting point. It should be inexpensive and fairly flexible. Any insight would be greatly appreciated.
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03-26-2008, 04:14 AM
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Join Date: Nov 2005
Location: eastern pa.
Posts: 232
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Wow. No response,I didn't think it was that stupid!
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03-26-2008, 01:35 PM
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Try a search on Tbitz or megasquirt, I think you have answered your own question. MS is great if you like to tinker. It is a combination of art and science. It will require some new sensors and work to get it right, hot and cold weather requires even more tuning.
I want to eventually go there but will wait for a rebuild and engine enhancement.
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DonMo 1984 911 Carrera Targa 3.2 liter, SSI's, Dansk 2 to 1, Steve Wong Chip Columbia, SC "Go Hokies" |
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03-26-2008, 05:24 PM
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Join Date: May 2005
Location: Cridersville, OH
Posts: 1,879
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What year car? What motor?What are you using the car for? Track, daily driver, weekend warrior , etc.
I like mine but I'm not sure it's for everyone. Be ready to spend many hours reading and tinkering.
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75 911 Indian Red- RUFWAN2B 2000 Boxster 2000 & 2007 Dobies www.stahlwerks.com Cages and preparation for your Porsche “People who never make mistakes must get tired of doing nothing” Bill : The origin of the orgy of Porsche |
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03-26-2008, 06:15 PM
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Let's be really clear. Megasquirt has all the abilities and then some of the existing Motronic in a Carrera. The fact that "tinkering" is made so easy invites one to do just that. Ask me how I know. But once done right, tuned right and left alone it will be a very reliable system.
I think you need to answer one question honestly to yourself: What do you expect over your existing system? Or in other words what is your motivation to consider this project in the first place? If it is a challenge and/or learning project then go for it hands down. If it is for performance improvement be prepared for a lot of learning and throwbacks before it'll pay off. There are cheaper, easier solutions proven solutions (think new map/chip). One very specific comment: The new code base 2.883j for MS-II seems to be a landmark breakthrough in terms of what can be achieved with Megasquirt. The higher sampling and new acceleration enrichment make a world of a difference. It transformed the turbocharged T4 engine in the 550 replica I've been working on. Cheers, Ingo
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1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
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03-26-2008, 10:11 PM
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never ending projects
Join Date: Oct 2003
Location: greensboro, NC
Posts: 671
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Glad to see that the new code worked out for you guys. Pretty cool watching your engine parameters live as you tune and datalog but I agree research and know exactly what you are getting in to. Personally I think its a lot of fun but maybe not necessary if you are going from motronic in a non turbo application.
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03-27-2008, 02:31 AM
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1984 Porsche Targa 3.2
1974 Porsche 911 Targa 3.6
