Sluggish Celica, Check engine light on too Options

[Tru_Pol]

Ok, I bought a 95 celica ST with 70,000 miles on it for 500.00 bucks sometime ago. I have installed a custom cold air intake, racing plugs, wires, and a new cap. I have removed the 1st cat and hollowed it out (so if I get pulled over I can show its still there) and have a B5 bomber muffler. I have also just installed my bullet fenders (painted too). I have alot more planned but have run low on cash.

Now my problem.......My check engine light has come on and the car seems to run sluggish. It seems to take a long time to get the car to move. Does anyone have any ideas what the problem might be? Im thinking it might be a clogged fuel injector, or fuel filter. Any ideas would be great!

[S_C_M]

IIRC, the knock sensor is located on the back of the engine block, under the intake manifold. The sensor's purpose is to keep your engine from destroying itself due to detonation. If engine knock is detected, the ECU will pull back ignition timing in an attempt to prevent serious damage.

I don't have a shop manual in front of my to pinpoint the sensor or the proper values for testing,sorry. When you do find it, check out the wiring fron the sensor as much as possible; some info on the net claims that wiring is a major cause of code 52 being displayed.