First issue, I have had the blower installed for about 5000 miles now and I notice a little bit of wobble at the crank pulley. Nothing super huge but certainly something to raise an eyebrow at and wonder if it's hurting the engine/bearings.
Second I have my FMU hooked up correctly and have the vacuum source t'd into my afpr hose. Those are the only 2 things coming from that vacuum source from the upper plenum. I'm not getting any increase in fuel pressure under boost, tried up to 6psi and nothing so I cranked my afpr to 59psi and leave it there so under idle it's high and under load it's a bit higher.
My Questions,
How do I combat the wobble? TCI Rattler balancer, will this wobble eventually kill my engine, I have 40,300 miles and I'm starting to leak oil. How do I know if I have a bad FMU or can the inline pump be a culprit if I have it hooked up wrong and if so how can I tell if the pump is in wrong.

 

When I installed my kit, the spacer for the crank pulley wasn't machined small enough to fit correctly in the center of the factory crank pulley. I chucked it up in a lathe and turned it down just a little, and it took care of that problem. As far as the FMU goes, the AFPR vacuum hose isn't the best place to hook the FMU reference line to. I made a vacuum manifold and put it in my brake booster vacuum line and hooked my FMU and boost gauge up there. It's been working perfectly for over 2 years now.

 

KS91Z28, thanks for the reply. I designed a new crank spacer in Unigraphics NX (high end cad) but have yet to get it machined. I was thinking of turnig the O.D. down on the spacer a bit. In regards to the brake booster vacuum manifold, would you mind posting or sending me a pic/sketch of what it looks like or a better description? I was going to drill/tap my intake and add another vaccum port. I'l share with you all pix of my relocated blower air filter. I have it right above my plenum extension/distributor and it feeds from the cowl induction of my ASCD SS hood. (gets it away from the nasty heat of my headers)

 

I'll try to get my wife to take a picture of it and post it after a while.

 

Here is that picture I hope it shows up

 

dont hook your FMU line to anything, if you must then the stock FPR will do. The best is to have it connected to nothing. You want as little volume on the line going to the FMU to avoid dampening it's sensativity. If you add volume its sensativity goes down.

As far as not getting any pressure rise; hook the pressure side of a mityvac hand pump to you FMU line and observe the fuel pressure gauge. Raise the RPM of the engine and put a pump or two on it and watch your fuel pressure skyrocket. the car will try to stall, that is why you raise the RPM's.

 

are you still having this issue? I have a 94 lt1 with an ati p600b and the charger keeps causing the crank pully to loosen and walk off the crank. any fixes that you know of?

 

B4Ctom1,
You said that you shouldn't hook the FMU to any vacuum source?? I don't get it. You have to hook it up to something so it knows the boost reference vacuum right? Should I create a t-manifold for my power brake vacuum line?

 

He means don't hook it up to any other vacuum source where it has to share with something else, make it it's own line to the manifold.

 

I to just had to deal with a wobble on my crank pulley when installing the kit, I did the same thing as KS91Z28 did, works great now.

 

Here's the pic