- Sep 1, 2003
you guys with the IMRC deletes where did you get them and what am i looking at as far as pricing? Also is it a waste of time. Thanks fellas.
Tat98Cobra said:...The car was set up from Ford with IMRC's on for a reason - these 4v's need them...
Some additional food for thought - in 99, Ford redesigned the heads and intakes- which eliminated the need for them.COBRA90GT said:Devi's Advocate:
Then why did FoMoCo decide to do away with them on the 99+ design?
I've read about some positive experiences with IMRC deletes, so getting rid of them on a 96-98 can be beneficial (certainly, it depends on the application: supercharged, etc).
Just some food for thought...
missouri_guy197 said:On a blown car with proper gearing at the race track, IMRCs certainly aren't necessary since you probably won't be below 3250rpms anyways, and taking the butterflies out will only help with airflow above that RPM...on an N/A car, you better have a ported/polished intake with shortened runners and some high flowing exhaust with Long Tubes or you'll really notice the loss of power down low...but you'll gain some up top with them also...so it's kind of a give and take situation...
It's very easy if you know how to get them out...and yours are plastic so even easier yet...you'll just need some hi-temp epoxy to fill the holes between the ports once the rod and butterflies are gone and a screwdriver to take them apart...then some sand paper or a dremel to smooth out the epoxy out once it's dry...also you'll need your chip burner to turn off the IMRC flag in your chip to tell the computer that they aren't there anymore...healerhand said:I was running 17 psi on my 98 Cobra and my IMRC got stuck closed for the second time. Tired of changing it. I was told because i run such a high boost, it affect the closing of the butterflies. I was told the 17 psi from FI is pushing it closed.
Anyone have DIY and Parts i need to the delete procedures. I am tired of spending 5-6 hundrends everytime.