S50 Swap CEL stays on

[///Mpowered]

Hello, so I completed the s50 swap on my 1989 vert e30 and I noticed my Check Engine Light stays on all the time. The engine came with pink injectors, 3.5in maf and a chip. I'm trying to figure out if those upgrades are causing the light to stay on or is there something else I'm not seeing. I tried performing the stomp test to see if i could get a code, but it doesn't seem to be working. The car drives and starts normal without no hick ups however, I just want to figure out whats keeping my Check Engine Light to stay on? Any advise would help.

Thanks,

[KIRIEIW]

The stomp test can be tricky but it should work. The other option would be hooking up a scan tool compatible with OBD1 but the stomp test should be working for you.