right on thought about that after posting thanks and ill be sure not to post any of it

so i replaced the coupler and no more knock at idle but when i floor it to kick in the boost it still rattles at first could this be the tensioner? any other ideas the rattle is more like a knock and there is no play in the sc pulley

when talking about the orings for the injectors are the o-rings all that I need or do I need an injector seal kit ( the dealer quoted 75 for this) and napa says about $3 per injector for the o-rings, would just the napa ones be ok or do I need to get the kit from the dealer?

Napa is fine. You need 12 total.

sorry about all the questions but here comes another on the lim gasket did I read somewhere that there are ones with aluminum that are better or are the ones from intense that dont have the aluminum around them ok?

Alot depends on what your budget is and what you plan to do about the coolant. I can't remember if I gave you the pitch yet, so here it is:

http://www.zillamotorsports.com/DEX


Without DEX, your nylon gaskets should be good for about 100k. With DEX, they could fail in as little as 20-30k.

If it'* in your budget, go aluminum AND ditch the DEX.

do you know where to get the aluminum? all i can find are the other ones and im planning on ditching the dex is there anything else i have to change to use non dex? also anything but dex right

GM parts number 89017825, get it from your dealer or GMPartsDirect.com

You didn't read that link. It states to use 'mixes with any color' coolant from Prestone. Don't mistake this for DEX compatible.

Nothing else needs to be changed, but you need to FLUSH out the old. Get it all gone. Prestone sells a flushing Tee set at your parts store.

INTENSE also sells the aluminum gaskets.

i looked all over the intense site and all I can find are the nylon ones? do you have a link to the aluminum? thanks again