Ive got a C1 in an Eg Si. About a week or so ago i noticed my car taking a few tries to start.. when it did start, if i were to step on the gas, it'd almost cut the car off. Then my vtec suddenly stopped engaging. Usually, when that happens it means my oil is low. I got an oil change & theres no change, still no vtev. I replaced the solenoid cap & is spliced straight to power & ground. Then the other day i left for work but when i pulled off, it was as if my car was 2stepping at 3500 rpm & does so in every gear. Ive just replace the dizzy.. same ****. Any suggestions??Ive been seeing a couple of these posts but no answers
Im also throwing codes 6,7,9,22

 

best place to start would be searching for those ecu codes. not sure what would have happened to make all of this occur, but it sounds like your ecu is running the car in limp mode, limiting rpm and disabling vtec due to the thrown codes. fix the codes and it should all work

 

Does your check engine light stay on when you turn the key? Your ECU may be failing. Also check that "ground 101" also known as the ECU ground on the thermostat housing. Yes its supposed to be on the housing, not the engine. Aluminum is not a great conductor of electricity, but the bolts are steel, and electricity travels through water, so don't think that it's a poor ground unless its completely corroded.