I'm having an issue with my BLM reading pretty low. Couple weeks ago it was reading 90-92. I replaced the stock MAF with a 85mm, reset the ECM and drove the car a few miles. BLM is still reading low at 96. Took a look at the plugs to see if there was a noticeable issue and all of them looked fine. I looked at my fuel pressure and it was at 49. I brought it down to 43 line off and there was no difference with the BLM.
Last owner changed the injectors and chip. From looking around, I'm pretty sure they are a set of 009's injectors with Red Armstrong chip. I've looked around and have the following as potential parts that can contribute. Coils, injectors, O2 sensor, possibly red Armstrong chip.
Anyone with a similar issue that can help? I'm trying to avoid replacing all these parts guessing what's causing the low reading. Here's my other readings.
AF - 5
L8 - 32 to 35
Bat - 13.7
Int - 122 to 132
Ats - 126
TPS - .44 to .46
IAC - 0
CC - Range from 0 up to 254
Last owner changed the injectors and chip. From looking around, I'm pretty sure they are a set of 009's injectors with Red Armstrong chip. I've looked around and have the following as potential parts that can contribute. Coils, injectors, O2 sensor, possibly red Armstrong chip.
Anyone with a similar issue that can help? I'm trying to avoid replacing all these parts guessing what's causing the low reading. Here's my other readings.
AF - 5
L8 - 32 to 35
Bat - 13.7
Int - 122 to 132
Ats - 126
TPS - .44 to .46
IAC - 0
CC - Range from 0 up to 254