Re: Catalytic converters 2008 hemi
How many miles are on your rig? Before you go sinking mega $$$ into a new cat/Y pipe setup, be sure to check the items listed below. To do some correctly you'll need some sort of high end diagnostic scanner. I have an Autel DS708, plus my onboard MSD DashHawk (no longer sold) is capable of reading O2's. I believe an UltraGauge (under $100) does this. At a minimum, make sure your engine is in good tune, there are no intake/exhaust leaks, and find a way to read the output voltages of the O2's as indicated below. This is critical in your diagnosis, and will help narrow down where the problem lies.
- Exhaust leaks anywhere in the system (Look for leaks at the exhaust manifolds)
- Intake air leaks (Not too likely)
- Fuel injectors....is your fuel economy poor?
- Spark plugs may be faulty
- Improper ignition timing (Also not too likely)
- Powertrain Control Module (PCM)
Years ago I did a thread on O2 Sensors that may also give you some ideas:
Oxygen Sensors and Their Role in Engine Management--A Primer
Also, here is a very enlightening YouTube video that gives you the whole story on how to diagnose your DTC.
Hope this helps you a little.
05 LX/RT & 06 WK/GCO, modded similarly, MDS "ON" Light, Vortex Gens, Debadged, DashHawk, BT Catch Can, SRT CAI W/Add Air Inlet, K&N Filter, Sonnax Trans Press Booster, SC Tuner W/Adv Trans Tuning App, DS Tuner, Cust tube headers w/3 in. catback, Bilsteins, SRT frt/rear bumpers, Eibach SRT Lwr Sprgs & Sways, FRI Sidewinder Cam Adv 2*, 6.1 valvetrain, SLP 25% UD Pulley, BBK 90mm TB, SOS Coils/.060 plug gaps. 20 in. SRT Reps.