woody2929

As anyone had good or bad experiences with magnaflow catalytic converters? I've heard that since they are hi flows that they trip the check engine light? Is this true? Input?

IceFishinFool

I have had them in my 07 for 50k miles now and no problems once so ever.

woody2929

I was just worried because the garage guy said that he has had problems with them tripping the check engine light, Just to be clear I have an 2005 5.4 litre 4wd and my particular engine only had one cat per bank not the two per bank.

08silverbullet

Which model?

woody2929

If this also helps, I am thinking about getting the magnaflow 99006hm universal cat, for both sides and I want to put a flowmaster series 40 on it while there are down there. Would it also be a good idea to change the O2 sensors on both sides?

IceFishinFool

07 lariat screw.

IceFishinFool

I would change the 02's. Just make sure to use motorcraft ones. I got mine off Amazon and they were half the price from any where else.

08silverbullet

I mean which model cats? Sorry should have been more specific

IceFishinFool

Got them from O'Reilly auto their part number is 51355. Not sure what model magnaflow uses. Ill try to dig it up. On the beach right now in Hawaii so I'll get it when I get home tomorrow.

08silverbullet

Lucky haha thanks for that number I should be able to cross reference it