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| Is anyone useing an aftermarket ecu with their 2.8 V6 (Page 1/2) |
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sleek fiero
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JAN 02, 07:58 PM
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Just wondering what ecu's are being used on 2.8 V6 cars besides the stock ecu
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pmbrunelle
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JAN 02, 08:03 PM
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GM 7730
Haltech E6GMX
MegaSquirt 2
MegaSquirt 3
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jdv
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JAN 02, 09:02 PM
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fierosound
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JAN 02, 10:40 PM
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Xenoblast
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JAN 02, 11:32 PM
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Ive thought about making a speeduino work on my fiero, I even bought one and had most of the board soldered together.. In theory it shouldnt be that hard to do because all the speeduino guys use all the same gm sensors.
I bought an lq1 before finishing tho so i have another abandoned project 
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sleek fiero
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JAN 03, 12:37 AM
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I started with a 1227730 and a set of batchfire coils. It ran well but did not produce the power I expected. I have an autoprom chip writer from Moates but still could not get good results. I bought an Emtron sl6 and built a new harness and used Bosch sensors and finally got the results I hoped for. Adrian Norton from Emton remote tuned it on a dyno dynamics dyno. Now I really wish I had not played around with all the other junk. anybody wants some Moates gear and a couple of 1227730 ecus just pay for the shipping and its yours.
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pmbrunelle
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JAN 03, 02:53 AM
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| quote | Originally posted by sleek fiero:
I started with a 1227730 and a set of batchfire coils. It ran well but did not produce the power I expected. I have an autoprom chip writer from Moates but still could not get good results. I bought an Emtron sl6 and built a new harness and used Bosch sensors and finally got the results I hoped for. |
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A programmable ECU is simply a means to run an engine with a certain AFR and ignition timing.
How can one ECU make more power than another ECU, if AFR and timing are the same?
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claude dalpe
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JAN 03, 09:52 AM
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Good point Patrick,
I think it's the tune that is the key to the power you want and not the ECM
Me with my 3.5 LX9 and 7730 ECM spent a lot of time tuning the ECM to get the power all over the rev range
The stock tune for my 7730 is from a 1992 Chevrolet 3.1 V6, it can't work with a 2005 3.5 LX9 without a lot of changes in the tune
We start with a 140 HP engine to go with 210 HP rated by GM
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sleek fiero
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JAN 03, 10:45 AM
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Sorry I did not explain myself very well. I found the Emtron gave me more options, most importantly I am able to use 2 lambda o2 sensors for very accurate air/fuel ratio sensing . Iam also running 2 knock sensors ,fuel pressure and fuel temp. Air intake temp and air pressure sensors before and after the 56 mm Bosch throttle body. I machined and installed a crank trigger wheel and used an LS crank trigger.. I took the old distributor and machined a wheel for it and built a cam sensor out of it. As for throttle pedal I modified a Nissan 370zx pedal to fit .Definitely it has been a lot of work but it was fun and I learned lot about tuning. the car is 85 gt and has full suspension package that the Fiero store used to offer .My 2.8is Bored and stroked to 3.208 liters and is balanced , Diamond 10.5/1 forged pistons , scat rods and new 3.1 crank. Crower 03050 cam , stainless valves, performance springs and roller tip rockers. Headers and Ocelot stainless exhaust. Champion 3 core aluminum rad with ac delete. 235/17 Yokohama tires on RTX rims.
I have had the car for 29 years .
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claude dalpe
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JAN 03, 11:28 AM
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Sorry but you spent lots of money and time for maybe a few more HP
$ 2 700 for your Emtron sl6 ECM + all your fabrication for crank and cam sensor + the Nissan pedal
All of that for bring a 2.8 (3.1) to the limit !
I don't want to tell you that you didn't do well As you say you had fun doing it that's very important
Did you run the dyno test to see the difference between different ECU's and tune?
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