what a difference

[steve]

I got a 96 sho, and its been doggy for a while so i ran codes on it and i turned out to be the imrc. so i ordered it (took about a week) i was chompin at the bit to put it in. the actuator came in but i had to wait another three days for teh mounting bracket ( that sucked) But i finally got it put in , and wow what a difference the other half of the intake makes, up to 120 like that, and plenty more throttle left, awesome.
Well, i took apart the old actuator and it turns out that the only plastic piece that was in there was broken, has anyone else ever had that happen before.
Steve

 

[mholhut]

Not me personally, but the IMRC failure (plastic pulley) does frequently occur.

 

[LASTSHO]

You're not the only one to have gone through this. I know of a couple gents that drove around for more than 6 months thinking thats all their SHO had in it...

Gotta love little pieces of broken plastic

 

[wuzzzer]

What are the symptoms of a failed IMRC other than lack of top-end power?
I would imagine that there isn't the same level of intake noise at 3400rpm+, correct?

 

[cartfan76]

I'd think if you've got ANY sort of intake mod done you'd know it right away if it didn't work correctly. I was pretty amazed how much more intake noise was there after just taking out the "sax" and replacing it w/3" tubing..

 

[stephen newberg]

Agree. I had a similar observation.

pax, smn

 

[SHOZ123]

If you take the appearance cover off it is easy to watch the IRMC cable as you goose it while in park. It will open at the ~3500 rpm and then again as the throttle is closed.