my car wont hold idle

[redclaw05]

I have a 2017 mustang gt

It has a PMAS no tune required (installed the supplied Mass air flow sensor) and I have a Corsa extreme catback.

I have been driving fine for the last couple of weeks.

this morning I start my car and it wont hold idle. It would just bog down and die.

help pls.

I unplugged the maf. and started the car - it would stay running but a check engine light would pop up. So I am sure the maf is the problem. Before I order an Ngauge is there anything else which can fix this?

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[F1scamp]

Put the old intake and maf on and see if it runs ok?

 

[Type550]

Vacuum leak? Checked all vacuum connections?

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