sw20 3sgte losing sync

[jabran]

I have this mr2 with an sw20 (uk car converted to 3sgte) converted using an oem loom.

When I get to around 3000rpm the engine loses sync once it revved past to 4000 but I had to abort the run as afr was becoming a bit lean.

Is it noise or maybe faulty vr sensor

Customer mentioned it before but kept calling it fuel cut as he had larger turbo on stock ecu I assumed maybe he was correct (big mistake I know lol).

I am suspecting a faulty distributor/vr sensor, I haven't experienced noise issues in my installs before so I am not too equipped to make that call so i thought I would post here.

[spla300]

I had a very similar issue but with the emu black edition.
One of the ground pins wasn't connected properly.
Make sure every single ground pin you find on ecu is connected to ground properly.
Maybe one of the wires wasn't crimped properly and it's sometimes losing contact.

[Paulo11]

Maybe it´s just too high signal from senzor. Try set lower(3000) rpm on senzitivity switch. Or you can try put a spacer under senzor.

[gips]

Make sure that the cables running from distributor to the EMU are shielded from interference of other signals. At some point someone may have decided to remove the shielding. if loom wasn't tampered with you should need to shield probably only the part , where you have cut the stock loom to attach the EMU plugs.

[gips]

One more thing though. It could be at certain point in time someone disassembled the distributor to replace the inner seal and bearing. When this is done you need to align the magnets on the sensor to the trigger wheel. There is only one specific position , when the wheel is close enough to both trigger points. If this was not done properly its possible the space between one of the magnets and the trigger is too big hence resulting in weaker signal. If you open the distributor the space between the trigger wheel and the magnets should be around 0.15mm-0.3mm at most.