I'm new to the whole Cobra Mustang seen and I'm soon buying a 96-98 Cobra and I hear a lot of people talking about IMRC's. I have no clue as to what they are and what they do. All I know is it's something to do with the intake system somewhere. Can someone please help me out and tell me why everyone deletes them?
IMRC Question...What the heck are they?
- Thread starter baller760
- Start date
They're butterflies in the intake set to open at around 3600 rpm, essentially making the intake a two-stage. The idea was to raise torque at lower rpms and then open to shorten the runner for high-rpm HP.
Some guys with blowers have removed them w/ the delete kit, the idea being increased airflow and a shorter air path. Recently I've heard that dyno testing reveals there is actually a power loss w/o them.
Some guys with blowers have removed them w/ the delete kit, the idea being increased airflow and a shorter air path. Recently I've heard that dyno testing reveals there is actually a power loss w/o them.
missouri_guy197
New Member
They actually open at 3250rpms, and they are actually located between the intake and the heads...IMRC stands for Intake Manifold Runner Control...Here's a picture of some really dirty ones from out of my car...I have since deleted the butterflies but I don't recommend it for anyone that's not blown or doesn't have a ported intake or heads...
missouri_guy197
New Member
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