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Thread: Which ECU for a 2.4?

  1. #1
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    Which ECU for a 2.4?

    My dad and I are converting a sandrail to a 2.4 ecotec. I am wondering which ECU I should use.

    Plans are for a turbo either from the get go, or later down the road so I want to keep the options open.

    Any advice would be helpful!

  2. #2
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    you already have the engine?

  3. #3
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    Just got word the E67 is the one to use. Does anyone know what cars that came in?

  4. #4
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    Engine is from a 2008 G6 2.4

  5. #5
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    The most pain free way is going to be either the matching PCM to the engine or a dizzy and a standalone. Even something simple like the ems4 or ms2 would work fine for your setup.

  6. #6
    Senior Tuner cobaltssoverbooster's Avatar
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    LE5[edit]


    Ecotec LE5 engine in a 2006 Pontiac Solstice

    The LE5 is a larger 2.4 L—2,384 cc (145.5 cu in)—version of the Ecotec. Both the 88 mm (3.5 in) bore and 98 mm (3.9 in) stroke are larger, and Variable Valve Timing on the intake and exhaust improve low-end torque. Compression is 10.4:1. Power is 164–177 hp (123–132 kW) and torque is 159–170 lb·ft (215–230 N·m). The engine uses a reinforced "Gen II" block.
    Year(s) Model Power Torque
    2006–2007 Chevrolet Cobalt SS 173 hp (129 kW) @ 6200 rpm 163 lb·ft (221 N·m) @ 4800 rpm
    2008 Chevrolet Cobalt Sport 171 hp (128 kW) @ 6200 rpm 167 lb·ft (226 N·m) @ 4800 rpm
    2006–2008 Chevrolet HHR 175 hp (130 kW) 165 lb·ft (224 N·m)
    2006–2008 Pontiac G5/Pursuit 171 hp (128 kW) @ 5800 rpm 167 lb·ft (226 N·m) @ 4500 rpm
    2006–2009 Pontiac G6 169 hp (126 kW) @ 6300 rpm 162 lb·ft (220 N·m) @ 4500 rpm
    2006–2009 Pontiac Solstice 173 hp (129 kW) @ 5800 rpm 164 lb·ft (222 N·m) @ 4500 rpm
    2006–2009 Saturn Sky 177 hp (132 kW) @ 5800 rpm 173 lb·ft (235 N·m) @ 4800 rpm
    2006–2007 Saturn Ion 175 hp (130 kW) @ 6200 rpm 164 lb·ft (222 N·m) @ 4800 rpm
    2008–2009 Saturn Aura 169 hp (126 kW) 162 lb·ft (220 N·m)
    2008–2012 Chevrolet Malibu 169 hp (126 kW) 162 lb·ft (220 N·m)
    2008–2009 Saturn Vue 169 hp (126 kW) @ 6200 rpm 161 lb·ft (218 N·m) @ 5100 rpm

    or switch to stand alone like haltech, motec, aem, linkecu, megasquirt....etc
    **by the way standalone ecu's will fire the factory ignition coils with a few basic tests to set the ecu up for controlling the factory COP Units.
    2000 Ford Mustang - Top Sportsman

  7. #7
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    Not to throw off topic, but what about the opposite of that? Using stock PCM to control aftermarket coils?

  8. #8
    Senior Tuner cobaltssoverbooster's Avatar
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    You need ignition controls which is acceptable if the tables are offered in the ecu

  9. #9
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    Eh I'm not saying I need it. I just know a guy attempting it with a cdi box.

    refering to LSJ btw.

  10. #10
    Senior Tuner cobaltssoverbooster's Avatar
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    if you know someone in programming you could technically re-code the ecu to fire all four cylinders off of cylinder 1 for a cdi cross over but i dont think its possible without a conversion unit or the re-coding.

    msd offers a spark unit for ecotecs and iirc it works on the lsj..might be another option.
    2000 Ford Mustang - Top Sportsman