I just recently installed the RJC Powerplate on my GN. (The real one, not the fake) BTW, you can tell the *real* one from the small "RJC" engraved into the plate.
Anyway, just in case any of you were looking into getting one of these, I'll share my experiences with mine.
Installation was a snap. Under half and hour by myself, including "clean up" time. Took off 5 bolts, undid the connection from the IC to the uppipe, disconnected the linkage/vacuum hoses, lifted manifold up. Removed old gasket and cleaned surfaces. (not too dirty on mine). Installed 2 gaskets with the plate. Prior to this, I drilled a 3/8" hole as per the instructions so my EGR would work. Re-installed everything.
The ONLY problem I had is that the bolt in the very back by the coil seemed too short to me. I guess this is where people ran into the issue with stripped manifold threads in the past. The 4 bolts along each side of the manifold sealed well. I replaced all bolts with Locktite Blue and hoped for the best. I could get some torque on the back bolt, but not as much when compared to the ones on the sides.
Fired her up, no immediate signs of any problems.
So, what's the verdict? Well, after driving to and from work today, I've experienced NO drivability problems. The plate *seems* to have cured the "off-idle" stumble I had when I "blipped" the throttle real fast at idle. Doesn't stumble anymore, no matter how fast I press the pedal. Cool.
On the way home, I opened her up a little on H2. I hit 22 psi, O2's were in the low 800's, NO transitional knock. Tried another run to duplicate the results, and again, no knock.
What else can I say? The plate works. Got rid of my transitional knock, my "off-idle" stumble, and seems to have improved my throttle response. For $60, you can't go wrong.
Sorry to make this so long. I hope this helps someone who was thinking about buying a Powerplate. Any ?'s, feel free to ask.
Steve
Anyway, just in case any of you were looking into getting one of these, I'll share my experiences with mine.
Installation was a snap. Under half and hour by myself, including "clean up" time. Took off 5 bolts, undid the connection from the IC to the uppipe, disconnected the linkage/vacuum hoses, lifted manifold up. Removed old gasket and cleaned surfaces. (not too dirty on mine). Installed 2 gaskets with the plate. Prior to this, I drilled a 3/8" hole as per the instructions so my EGR would work. Re-installed everything.
The ONLY problem I had is that the bolt in the very back by the coil seemed too short to me. I guess this is where people ran into the issue with stripped manifold threads in the past. The 4 bolts along each side of the manifold sealed well. I replaced all bolts with Locktite Blue and hoped for the best. I could get some torque on the back bolt, but not as much when compared to the ones on the sides.
Fired her up, no immediate signs of any problems.
So, what's the verdict? Well, after driving to and from work today, I've experienced NO drivability problems. The plate *seems* to have cured the "off-idle" stumble I had when I "blipped" the throttle real fast at idle. Doesn't stumble anymore, no matter how fast I press the pedal. Cool.
On the way home, I opened her up a little on H2. I hit 22 psi, O2's were in the low 800's, NO transitional knock. Tried another run to duplicate the results, and again, no knock.
What else can I say? The plate works. Got rid of my transitional knock, my "off-idle" stumble, and seems to have improved my throttle response. For $60, you can't go wrong.
Sorry to make this so long. I hope this helps someone who was thinking about buying a Powerplate. Any ?'s, feel free to ask.
Steve
But it was on RJC's website as well. 
