Power loss after 5000RPM?? Options

[RockyMountainCel...]

Picked up my first 1995 Celica GT today and after driving it for awhile it really seems to fall on it's face after about 5000RPM.........any ideas why it's doing that? Fuel pump? Bad intake? Injectors? First thing tomorrow I'm removing the intake and cleaning the TB and the intake filter and then a full tank of 93 octane. I'll probably check the spark plugs/gaps while I'm in there, anyone know what the stock gap should be? Only mods it has are a DIY intake and a full catback exhaust.

This post has been edited by RockyMountainCelica: Aug 17, 2010 - 1:20 AM

[samir0189]

if you are in the rocky mountain area as your name implies, you all get fuel with a lower AKI because of your elevation, and it has been shown to provide the same performance as the higher octane we receive at lower altitude, however i suppose it is plausible that you notice an effect, based on your elevation.

edit: anyway, at 5000+ rpm, gas mileage goes out the door, and the engine is only designed to make X power on the fuel it was designed for. .. high octane wont help the 5sfe's mechanical inabilities.... but once again, its your $. im not gonna argue.

This post has been edited by samir0189: Aug 17, 2010 - 1:46 AM

[RockyMountainCel...]

if you are in the rocky mountain area as your name implies, you all get fuel with a lower AKI because of your elevation, and it has been shown to provide the same performance as the higher octane we receive at lower altitude, however i suppose it is plausible that you notice an effect, based on your elevation.

edit: anyway, at 5000+ rpm, gas mileage goes out the door, and the engine is only designed to make X power on the fuel it was designed for. .. high octane wont help the 5sfe's mechanical inabilities.... but once again, its your $. im not gonna argue.

fair enough, i appreciate any and all input as this is a new car to me.

This post has been edited by RockyMountainCelica: Aug 17, 2010 - 2:03 AM