Hi all
I am putting a LT10 into my mates brumby with an EA82t 3 plug ECU a couple of questions if someone has done this.
1. At the moment coming from the dizzy the 4 wires have been cut and only one goes to the coil. I though the ea82t dissy was the same as a crank angle sensor? The 4 wires are the crank input for the LT10 then out to the Ignition modual and to the coil?
2. The TPS seems to have 5 wires but I can only find a 4 wire conversion from the LT10
3. Do you just not hook up the Air Flow meter?
I have put an LT10 into a rotary before but not a pison engine so help would be great
thanks
LT10 onto an EA82t Help
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steptoe
- Master Member
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- Joined: Thu Oct 06, 2005 10:00 am
- Location: 14 miles outside Gotham City
an LT10 is ? an after market ECU?
If it is a 3 plug ECU factory the dizzy is not a crank angle sensor, that goes with the 4 plug.
The cable that goes to and by the dizzy connects to knock sensor on top of RHS block at back with two wires and there is a bundle that go to a KnockControlModule mounted in L efi turbos 3 plug ECU. On Ls they are mounted behind dash between glovebox and door frame.
The 3 plug ecu TPS has 3 pins, central one is earthed I think, the lower one closer to the block is idle switch, the upper should switch on at about 45 degree open
If it is a 3 plug ECU factory the dizzy is not a crank angle sensor, that goes with the 4 plug.
The cable that goes to and by the dizzy connects to knock sensor on top of RHS block at back with two wires and there is a bundle that go to a KnockControlModule mounted in L efi turbos 3 plug ECU. On Ls they are mounted behind dash between glovebox and door frame.
The 3 plug ecu TPS has 3 pins, central one is earthed I think, the lower one closer to the block is idle switch, the upper should switch on at about 45 degree open
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discopotato03
- Senior Member
- Posts: 2134
- Joined: Sun Mar 18, 2007 9:29 am
- Location: Sydney
Yep thats right , the Hotwire AFM (4 plug ECU system) runs a fixed shaft with a thin stainless disc that has two rings of holes punched through it .
From memory the outer 360slots tell the ECU where the crank is and the other 1 or 4 which cylinder is the next one in the cycle .
Usually one of the inners is different and that tells the ECU when No 1 cylinder is next and syncs it for the correct ignition and sequential injection sequence at start up .
If you want to make life easy initially wire the new computer up to do fuel only and all it'll need is a speed input - coil negative pulse signal to get you up and running .
This way the ignition system works as per normal and allows you to tune fueling for starters .
Second phase may involve getting a later optical trigger dizzy/CAS and doing the timing as well .
If you've not previously tuned EFI its lots easier when you don't have the timing side to worry about . Also the std ignition side will attemp to controll detonation if the mixtures are lean .
A .
From memory the outer 360slots tell the ECU where the crank is and the other 1 or 4 which cylinder is the next one in the cycle .
Usually one of the inners is different and that tells the ECU when No 1 cylinder is next and syncs it for the correct ignition and sequential injection sequence at start up .
If you want to make life easy initially wire the new computer up to do fuel only and all it'll need is a speed input - coil negative pulse signal to get you up and running .
This way the ignition system works as per normal and allows you to tune fueling for starters .
Second phase may involve getting a later optical trigger dizzy/CAS and doing the timing as well .
If you've not previously tuned EFI its lots easier when you don't have the timing side to worry about . Also the std ignition side will attemp to controll detonation if the mixtures are lean .
A .
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twilightprotege
- Junior Member
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- Location: Brisbane