I'll be installing the Rrm bored intake manifold this weekend. The Manifold has been on a car for quite some time so the runners will most likely be dirty and have some build up. Should I not worry about it, or should I be proactive and clean the runners before installing? If I should clean, is there any special product out there, or just plain water and a rag?

 

you could clean them. i'm sure the porting got rid of a large portion of the gunk but check this out. post #27....he didn't have such a bad idea.

Gutted/Ported/Polished Stock Exhaust Manifold

he was using some sort of acid. page 3 he follows up on the technique. seems a lot easier than doing it all by hand.

EDIT: while it's apart clean out your TB + EGR system. you'll notice the difference

 

Looks like a good idea... but seems fairly overkill Maybe I'm just too much of a puss to dump acid in a bowl and bath the IM

 

it's worth a shot. it's pretty much effortless.

 

Why not? I know that if it was me I definitely would clean them...

 

So looks like your keep'n the Mistu. after all, geezzz i'm gonna be the only one in Ottawa soon with a Mitsu................LOL. If you need some help you know where to find me.

 

Everything went well. Sort of... fuel was squirting out of Erik's 4th injector the seal was damagaed when the injector got put back in the rail. 8 hours to do both cars.