Lately my car has been feeling sluggish. I changed the plugs last week and still no difference. I changed my knock sensor at 80k miles, now I'm at 110k so it's not the ks. Could it be my oxygen sensor? I also have really bad gas mileage lately. The gauge is at the halfway point and I only drove 130miles!! I used to drive 200+miles by the halfway point.

Plus,

I did a 3rd gear pull with my friend. He has a 96 se 5speed like me but he has intake and catback thats it(88kmiles). I have intake/ypipe. We went from 50mph-top of 3rd which was around 95mph. He pulled 3/4 of a car length. I was shocked because he doesn't even have a ypipe and he beat me. the catback does nothing. Shouldn't I destroy him because I have the ypipe??

Oh and I ran it at the drapstrip and my best was a 14.7 @ 93.5mph with a 2.2xx 60'. Isn't 93mph kinda low trap speed?

What do you guys think??? Please help me out. should I change my o2 sensor?
-Paul

 

do you have a cel? theres more than 1 02 sensor

 

sounds like an o2 sensor...........I had the same problem.......I changed both sensors in the y-pipe and the car felt like new again