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Old 11-27-2006, 01:29 AM   #1 (permalink)
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standalone information

anyone here using a standalone system, can you guys give me ideas on price and pros and cons to your system or if you have some substancial info on a specific system.
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Old 11-27-2006, 03:07 AM   #2 (permalink)
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What do you want to know? There isnt much room for standalone upgrading on the rotrex units.
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Old 11-27-2006, 03:47 AM   #3 (permalink)
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What do you want to know? There isnt much room for standalone upgrading on the rotrex units.

ah my young man, id like to know everything
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Old 05-24-2007, 07:22 PM   #4 (permalink)
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tec3 or aem are probably your best bet
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Old 05-24-2007, 08:09 PM   #5 (permalink)
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I'd say your best bet is whatever your tuner is more comfortable with. There are other options. Haltech being another popular favorite of tuners
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Old 05-24-2007, 09:58 PM   #6 (permalink)
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Mega squirt gives the very best bang for the buck, programmable for nearly any motor from 3 to 12 cyl. Even or odd fire.
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Old 05-25-2007, 02:10 PM   #7 (permalink)
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Mega squirt gives the very best bang for the buck, programmable for nearly any motor from 3 to 12 cyl. Even or odd fire.

ms is becoming more popular but unless you are very good with electronics piecing one together yourself will likely not yield great results
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Old 05-25-2007, 08:38 PM   #8 (permalink)
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Learning basic fuel and timing mapping is a must for any standalone ECU being used. If you are not willing to learn at least that leave your car stock.

Even if you know nothing and are at least willing to learn, there are plenty of sites selling preassembled MS systems and willing to set it up or program them with what ever you want, plus sites explaining how-tos on anything. Look here: eBay Motors: MegaSquirt 3.0 Fuel Injection Computer Custom for You! (item 110130639700 end time May-26-07 19:07:23 PDT)

I got a MS III (the best so far with 10x the timing resolution) for 350 bucks. I'm installing in my (soon to be) turbo E30. You can also find MS-1 systems for less than 200 that control both fuel and timing for NA or boosted motors. You can't find any stand alone ECU at triple that price with anything close to the features and support of an MS. The software is open-source, so plenty of people are programing configurations and add ons, such as individual coil fire, coil packs, knock sensor input, nitrous control (min rpm, new timing map or fixed retard), water injection control, real time barometric correction (for guys like me who travel) and plenty more.

You can use the built in map sensor for NA or boosted engines up to 21psi or you can use a modern hot wire MAF. Plus you can modify and DL nearly any configuration and flash it to the MS ECU after it's in. It really can't be beat.
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Old 05-25-2007, 11:13 PM   #9 (permalink)
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Although the use of any standalone, more specifically replacing and/or the modification of factory related equipment in emissions controlled areas can be illegal and may make your car fail local testing. Forcing you to revert back to stock anyway, check your local laws.

This is very frustrating, in spite the fact a well tuned fuel and spark map on an aftermarket ECU can actually have your car run cleaner and more efficient than the stock ECU, it's still illegal. As an example, cold air intakes and open element air filters can actually fail you for emissions and inspection testing if your car comes stock with a thermostatically controlled air intake (heat riser off the exhaust manifold).
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Old 06-03-2007, 09:18 PM   #10 (permalink)
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thanks for the info guys, i figured out what im gonna do.
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Old 06-03-2007, 09:22 PM   #11 (permalink)
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Tec3r?
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Old 06-03-2007, 10:18 PM   #12 (permalink)
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yes sir.
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Old 06-04-2007, 01:25 AM   #13 (permalink)
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get your wiring figured out?
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Old 06-04-2007, 05:56 PM   #14 (permalink)
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I'd suggest more research, the Tec3r is nearly 3 times more expensive and has half the support and features.

First time MS start up, just installed and plugged in, (not mine, not tuned yet either): YouTube - Rob's BMW - Megasquirt Idling

MS built himself with all harnesses, sensors, etc comes in around $650 installed.

Tec3r can't use coil overs, and I have heard about horrible starting issues with them unless you can convert it to true sequential injection.
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Old 06-05-2007, 02:34 PM   #15 (permalink)
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furious are you keeping your sc or going turbo?
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