yea well i have a problem accelarating with my em1......anyways after regular crusing at around 3-5krpm it will just stop at 3-5000rpm and itr feels like it does not want to go as soomeone is holding it back and when i hit the gas slightly more the it will get a deep tone but stay at a certain rpm and then it starts bucking and jerking but it only does it at regular crusing........it is not throwing any cels but the o2sensor......

 

What shape are the plugs, wires, cap, and rotor?

Is the ignition timing set to spec?

In some cases, a faulty O2 sensor may cause the engine to run too lean, resulting in such performance problems.

 

brand new plugs,wires,oil,and yea i have stock obd2 ecu and then i have a hondatats300 and it does it on both of them......and it will only do it on crusing the car runs perfectly at wot

 

Inspect the cap and rotor and check the ignition timing.

What O2 sensor code are you throwing? Do you know whether the sensor or wiring is the problem? Do both ECUs throw the O2 sensor code? Does unplugging the O2 sensor make the problem go away?

 

k yea its only throwing it on the stock obd2 ecu on the hondata im not throwing any codes and i just checked the cap and ignition timing is stock

 

actually on the s300 it was showing a faulty knock sensor which we disabled

 

ow and the secondary o2 sensor that goes into the cat is not screwed in it has been removed

 

Did you inspect the contact points inside the cap and on the rotor?

Are you using a timing gun with the service connector jumped to check the ignition timing?

Is the CEL code for the primary or secondary O2 sensor? Edit: So the primary O2 sensor is not throwing a code, right?

 

its the secondary 03 sensor

and yea i have checked the contact points and the roto seems fine
and no i got the timing checked last week and everything was fine......

 

Okay, then you might want to check the ICM and coil in the distributor. Also consider a Seafoam treatment. How's the fuel pressure with and without the FPR vacuum hose connected?

 

the distributor is perfectly fine there is nothing wrong with it...............and the fuel pressure is fine its at 55