^Idk, the guy did alot of stuff to the motor i didnt understand. I fixed alot of wiring issues, the kid before me had her 2 months before a reckless driving ticket. He didnt fix any of her problems ive torn everything apart and rewired her, she runs better than she did, but when i got her, and still it bogs in secound. Im afraid to mess with the greddy blue. SHe has a straight exhaust, no cat, no o2 sensors hooked up...sigh. Shes a great car, im just a perfectionist on how my things run.