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| LSJ Supercharged Ecotec Swap (Page 4/45) |
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FIEROPHREK
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MAY 22, 10:09 AM
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| quote | Originally posted by ccfiero350:
The throttle body is an issue. The LSJ uses the fly by wire technology and the stand alone EFI units do not incorporate this. I have not researched much in this direction. Can you measure the bolt patern and bore diameter?
Thanks,
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The LS4 is fly by wire  I can measure the bolt pattern and post up a few pics too.
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REMEMBER KIDS 4.9 ARE NOT SBC's
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Austrian Import
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MAY 22, 01:09 PM
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| quote | Originally posted by wftb:
by the pictures it looks like the engine / tranny wiring harness is all complete .can you go and get the donor cars wiring harness ? the ecu and bcu ,large fusebox ,small fuse box and all the relays and connectors are all incorporated into the package .you wont be able to make your saturn guage cluster work without the bcu .the harness it connects to comes out of the bcu .also does the drive by wire incorporate the throttle position sensor ? if it does then it probably goes through the bcu as well .
my swap was very easy to do because i got all the factory stuff out of the donor car . if you are worried about not wasting billable time ,spend the money and get the rest of the donor car's parts that you will need .since you are starting with a four banger ,you need a new fuel pump too .you might as well use the one that was meant for it .when you have all the factory parts , it all becomes plug and play . |
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Yea, that's the only way I would attempt it. Use the stock computer, Dash, fuel pump, engine+tranny, Cat, and everything. Side effect: It should be C.A.R.B. legal in California. (assuming you start out with a CA car (made to CA spec) from the boneyard)
-M
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BV MotorSports
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MAY 27, 08:44 PM
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Nice work. This thread has intrigued me. I think a Fiero would make a very good home to the SC Ecotec. Curious why you didn't save yourself alot of hassle and just go with a stand alone EMS? ------------------
2005 Mitsubishi Lancer Evolution
Nurburgring WARRIOR!!!! I survived the "Green Hell".
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ccfiero350
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MAY 28, 12:16 AM
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I will be using the MSD ecu when it becomes available next month (cross fingers & hope everybody stays on schedule) Once you add it all up it becomes the easer choice. If I had the entire donor car it would have been easer to use the cobolt stuff. ------------------
yellow 88 GT, not stock
white 88 notchie, 4 banger
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wftb
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MAY 28, 11:15 PM
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i was looking at the msd unit too and it looks very promising ,especially since it is ecotec specific and they will also make harnesses .also tuneable just like an hp tuner setup .
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ccfiero350
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MAY 29, 09:56 AM
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There are some trade offs. With the MSD unit it will be techically not be emissions compliant, although it may pass the treadmill test using the 1988 standards for the car.
The MSD unit is a bank to bank batchfire fire, speed density type ecu. So I'll loose a tiny bit of low speed drive manors and a little MPG and it may be a little persnickety untill it warms up.
Here is a link that shows some more information on the ecu.
http://www.umiracing.com/ga...y/Images/Catalog.pdf
The goal of the car is to be a street legal track car that I can beat the snot out of with out the worries of breaking drive line parts. So I can certainly live with all that. ------------------
yellow 88 GT, not stock
white 88 notchie, 4 banger
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Fosgatecavy98
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JUN 14, 02:07 PM
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| quote | Originally posted by ccfiero350:
The alternator are a little smarter then they used to be. The LSJ uses a higher ouput version then the L61 but uses the same control signals. The small 2-wire plug that goes into the alternator turns it on.
On the L61,
Pin 1, OG color, is Generator Turn On Signal, needs 5 Volts to make it generate voltage. The ECU controls voltage with a PWM 15-87% duty cycle.
Pin2, GY/WH color, is Generator Field Duty Cycle Signal, is a PWM output to tell the ECU how much load is on and to adjust idle speed compensate for high electrical loads.
Tying pin 1 to +5volts will turn it on, I do not know if the internal regulator will take over and maintian the battery.
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I just tried this using the TPS 5v reference wire, it did not work and it really pissed MS off, until I unplugged it megasquirt refused to turn on. Anyone know a good way to reduce 12~14.4volts to 5 volts?
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AP2k
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JUN 14, 03:08 PM
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| quote | Originally posted by Fosgatecavy98:
I just tried this using the TPS 5v reference wire, it did not work and it really pissed MS off, until I unplugged it megasquirt refused to turn on. Anyone know a good way to reduce 12~14.4volts to 5 volts? |
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Voltage regulator. You need to know how much power you need to drive it, though.
This looks good: http://rocky.digikey.com/We...T,%20FP%20Series.pdf
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FierociousGT
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JUN 14, 10:05 PM
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| quote | Originally posted by ccfiero350:
The ecotec has many cool things going for it like all the accessories bolt to the block for a nice tight package. But the a/c pump is mounted very low and runs into the exhuast hump on the front cross member.
Roger Thelin (352) 375-8259 makes a kit to bolt in the 2.2L ecotec with the F23 5-speed be replacing the old cross member with one of his design.
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Is Roger Thelin the older gentleman from Gainesville that had the silver Ecotec notchie at the Daytona '07 show?
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wftb
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JUN 15, 12:27 AM
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