i was thinking about getting pem'* this summer to help with KR for when i swap pulleys. how easy is the installation, pretty much just bolt on? At hulkspeed for the aluminum ceramic caoted PEM'* it'* 225 plus the $75 core? what kind of gains am i looking at with them? and if i got the aluminum coated ones, i'm guessing those are coated inside and out?

I haven't done it yet, but my understanding is that the front is not too bad to do, but the back is a bit of a pain. Others who have done it will speak up, I'm sure.

Get the ceramic coated ones. There'* a reduction in retained heat using them.

Re: the core charge, I would guess they would return that to you once you send them a good set of manifolds in return. You'll have to contact them and verify to make sure.

Front is a walk in the park as is the cross over.

Rear....If the downpipe to manifold bolts don't fight, it'* not bad. The EGR 10mm is a little pain, I used a swivel 10mm socket and it went good. Otherwise. it'* not bad.

Rear: I removed the bracket the O2/fuel lines connect to, and working almost 100% from the driverside, you can get at all the bolts pretty well. EGR as mentioned is a little time consuming. If possible remove the two studs that guide the manifold on the block. Being sandwiched between the downpipe and engine is not a problem w/o the studs. A little pain with them in. Then rotate the passenger side end of the manifold up and with a little wiggling pull it out the top of the engine bay

cool. so it is 225 plus the core charge or does that include the core charge? and any idea what kind of gains i would be looking at from doing this?

Gains really depend upon how much KR you have/eliminate and other mods.

I personally didn't feel a huge increase in power. My car responded by pulling stronger all the time and much more consistently. All my changes were noticed in changing the front (aka only restriction) manifold.

overall was it worth the price?

To me, yes it was.

I never had plans to go this far, however the front manifold is such a restriction you ask yourself how an engineer could do that to a motor.

When your car is good and cold...reach your hand down and feel the underside of the manfold. It'* really quite silly.