So like an idiot I put that product, ENGINE RESTORER in my VQ35 after an oil change and sure enough the car started idling rough and I noticed a loss of power. I pull the codes and its code P0021 and P0011 the intake valve timing control solenoid valve. Has anyone had this issue and if so what do you do? I cleared the codes after I changed the oil, immediately after this issue. The engine continued to idle rough. Is this an issue of cleaning the solenoid? Replacing? Is this easy to do? Thanks.

Hey I'm having the exact same situation.
I got P0300 and P0021. Costing me $400.
Call Liz Ross, Restore Inc representative at 1-954-563-7001.
I'm going to file a claim if they refuse to solve my problem.
Come to my thread and let's talk about it.
https://g35driver.com/forums/engine-...ml#post4994817

I already talked to her. They need me to fax over all my stuff..receipts etc. Im ****ING PISSED.

Tell me about it. I'm in your shoes right now. Just picked up my car and paid $450...

why did you guys use this ??

We used this because we like to pamper our cars and believe that any **** we put in our cars is going to magically make a huge difference or save us money down the line. Basically we are stupid and like to screw ourselves.

what was the fix here?