Originally posted by Big Jim:
Originally posted by DemonSVT:
I relocated my IMRC to a box under my work bench.


Does that count?



OK, but what other mods have you made to diminish the need for the IMRC?

That is a great response though.


Man I don't have all day to type that out...

I will agree that I do not recommend removing it to 99% of the people out there.


I will also agree that you CAN NOT just remove the IMRC. THE PCM will not like it AT ALL! (Severe limp mode)
Even turning it off in the PCM (if the tuner can actually do it) still IS NOT the proper way to do it. That leaves you with a very weak spark curve no matter what you program it for.
The PCM overrides all the spark & fuel tables with the IMRC off, bypassed, or disconnected. Stock, chipped, flashed, everything!

Tuning by dyno is one thing but without datalogging as well it is just a very small part of the equation. Datalogging is EVERYTHING since it shows the actual PCM changes. Otherwise you could be thinking you are changing timing curves, scalars, tables, et cetera when really you are changing nothing because the PCM is overriding it or just not accepting the changes.

The IMRC is a perfect example! I know from experience...


Moving it however is a good idea.
You all know I have always harped it dies from heat. Ever since mine did the same thing at only about 10k miles. (4 years ago)
Intermittent failure that was heat and rpm dependant. MAJOR PITA to diagnose!!!

My fix was to remove the heat catcher and mount it on 1" rubber spacers. (they also acted as vibration dampeners)

It never gave me any trouble after that during normal use.

The only concern about moving it is to keep the cable as straight as possible. Cable bind will burn up the motor, the PC board, and cause slow and sticky IMRC operation.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.