2006 RXP w/ x charger only doing 40 mph

[Frankm1188]

Last year I bought a 2006 RXP. It was pretty quick and the right at 80 hours. I read about all the horror stories of the supercharger washers coming apart. So this winter I replaced it with the x charger, replaced the injectors, oil, and replaced the fuel pump with a high-volume fuel pump. It starts up and sounds strong. So I took it to the water and blah(40 mph top speed). I replaced the plugs, wear ring, and SS impeller and still no change.
I don’t know what the rpm’s are because of the sun burned screen.
I feel like I’m just not getting any boost for some reason. Other than that the motor sounds strong. Compression is also good. I’m clueless!!!!

 

[TheCabralFamily]

Probably a Given, but are you using the "Learner" Key by chance? I know because I made that mistake personally

 

[Arkie Bob]

See my recent thread here;
Supercharger: What'd I Do Wrong?
Mine ran perfectly, higher RPM, smoother, better throttle response, everything. Until it didn't. I pulled the Supercharger intake and can spin the vane with finger pressure (that's a pretty quick way to do an initial supercharger check, by the way) Didn't have anything to remove that one biach supercharger retaining bolt, so I'm taking the proper tool this weekend to remove the SC and see what came loose.

 

[Arkie Bob]

What's an "X charger"?

 

[Frankm1188]

What's an "X charger"?

The SC from a 260 RXPX

 

[Frankm1188]

Probably a Given, but are you using the "Learner" Key by chance? I know because I made that mistake personally

I was only given 1 key with it. It did sound 68 mph last summer.

 

[skiasylum]

Where did you get x charger kit and who installed it?

 

[Frankm1188]

Where did you get x charger kit and who installed it?

PWC Muscle. I installed it.

 

[skiasylum]

Definitely give Greg a call at PWC, if you haven’t already.

 

[Chester]

I was only given 1 key with it. It did sound 68 mph last summer.

Make sure it isn't a learning key, as said before.

Chester