PHI_HO1

I post this thread before and try to fix it for awhile and here is what i got in the car: stock air box with drop in K&N, turbo back, 660 denzo, cossie cams for now and tune 21 psi. I have the HKS Intake cam install last Sep. and Po300 come up. and i just install i got some Cossie cams for 9 and put them in and still the code come up. So it's not the cams but something else. I change spark lugs and wires and check fuel and vaccuum lines but still it come up. can it be some of the sensors ? i also data log my car many times and find out no knock at all. the car is make good 330whp with the HKS cams on but i need a retune on Cosworth for now can it be the tune ? any help on this one i know P0300 misfire code is not comman on evo 9 but i got the code. i will take any advice from you guys maybe it will work.

02 OZrally

its pretty common on tha 9's i get the code all the time, i bought me a code reader and clear it everytime...your gonna search and search the forums and find nothin, if you aint getting any knock and all the internals is good, you prolly all good. i got a stock evo 9...