03 GTX DI top speed

[mrbill3]

What should I see for a top speed.
I was out this weekend on a blowen out lake and could only get 48 to 50 MPH

 

[owe2712002]

I would replace spark plugs and add a water removal treatment to gas.

 

[mrbill3]

I would replace spark plugs and add a water removal treatment to gas.

I've got new plugs along with fresh gas. Med. grade Chevron
Just looking to see what should be the top speed. Then I can go from there.

 

[mrbill3]

Just a bump to the top.
Does anyone know what I should see for a top speed on the 03 GTX DI with the 951cc motor?