I got V1 supercharger in my 2000 Maxima for 100K already and I run the supercharger without Votech fule pump since I drop the pully size to 3.33"around a year ago. So far I got a problem. Right now the RPM of my car is not stable and keep moving up and down under 1000 RPM when it's idle. I check all the vacum pipe and there is no leaking. Does any one know what cost the problem like this. Thanks

 

Have you cleaned the throttle body? If not, try that first.

 

Also check out your filter and make sure it's not dirty. Have you checked out all your clamps to make sure there stil on tight on the hoses?

 

What kind of clearner I can use on throttle body?

 

Just visit pepboys or autozone and get some throttle body cleaner.. Don't matter which name brand.. as long as it's for the throttle body..