My car bogged on the interstate today at point of vtec engagement, now my check engine light is on!

 

check your vtec solenoid for leaks. replace the gaskets. and check the oil lines.

 

my dad put 89 octane in my car last night could this be a problem?

 

i've never had it stop me from hitting vtec.
are you tuned?

 

Not real sure, I kinda bought the car with the mods. I just went back out for another test drive and I was able to hit vtec ok, but idle seemed to be a tad low.

 

91 ONLY!!!! WTF why would your dad put 89 in the car? to save 10 cents a gallon?

 

 

Need more information on your setup.

Engine management? Pulley size? Injectors? Test Pipe? Exhaust?

One potential bad scenario:
You're running lean already, when you hit VTEC you have an even leaner spike. With the lower octane fuel, more chance of detonation. You have a lean misfire at VTEC and your ECU (if you're OEM) pulls timing and you feel bogging.

Check your CEL for the code. It might be a misfire code.

 

Please tell me you checked the CEL code before you went flogging the engine again.

 

Why do people post questions and not provide information on there set up?