You need a back pressure gauge for the cat test. Feeling the exhaust is not accurate.
Used ones will never work as they have been programmed to another vehicle. Flashing is an operating system specific for the car. Runs about 150 to flash if it needs it.
Get a fuel pressure check as well.
Make sure the timing and compression are good.
Wednesday, July 11th, 2012 AT 2:12 AM