Hondata

The stock ecu could not be used on an engine swap like this. You really need to test the ECU you are using in another running vehicle to see if the problem persists, or if it is working correctly.

I did notice that you have the disable spool error check checked...why is this?

Was just trying to disable everything that could of stopped it working.

The stock ecu was running it. Was just running lean, which is why I put bigger injectors in and a new ecu.

You need to try this on a different vehicle to help you isolate where the problem is coming from. This is the only way you can easily use process of elimination.

I don't have another vehicle to try it on tho

You should be able to use other forums for your local area or facebook to locate someone else that has a vehicle you can test this in. IF they have an s300 you can even upload their calibration into your ECU so that it is running their car exactly as it should be.

Haven't been able to find anyone. Any other suggestions?

You should take this to a Hondata dealer near you to have them check this and help you diagnose the problem.

https://www.hondata.com/international-dealers

There isn't one that close and obviously I can't drive the car there.