I have a 90 gxl, and i usually drive it normally like under 4000 rpm. but when i went for a wot run the motor seemed to be very sluggish on the top end. And right now i tried doing the same and it felt very restricted, like as if it has lost a lot of power. the last time i felt something like that was when i blew the motor on my 88 TII
does anyone have any siggestions?> 6port not working?

 

Could be 6port sleeves are froze up. Put some grease on them and see if they move after a good drive.
Could be clogged catalytic converter. Listen for sounds of debris rattling under the car.
Could be just a leak somewhere like in the exaust or one of the vacuum hoses.

Need more info, any other symptoms or irregularities youve noticed?

 

clutch? might be slipping...

 

could be ports, clogged cats, dirty injectors, a tune-up or just mad at you for never redlinning it....

 

secondaries might not be firing