My Passenger side cat is rattling so its prolly on the way out so I was wondering what my options were as far as fixing it. Since its a two cat system if I have a muffler shop weld in a straight pipe and put in some o2 sims would that have any negative effects on the car? Or should I just replace cat? I just figure it would be cheaper to go the first route.
Announcement
Collapse
No announcement yet.
Catalytic Converter question
Collapse
X
-
Originally posted by ws6drbobMy Passenger side cat is rattling so its prolly on the way out so I was wondering what my options were as far as fixing it. Since its a two cat system if I have a muffler shop weld in a straight pipe and put in some o2 sims would that have any negative effects on the car? Or should I just replace cat? I just figure it would be cheaper to go the first route.1994 Firebird Formula, M6, Fan switch, 160 thermostat, Pacesetter LT headers, Morosso CAI, TB bypass, True duals.
Comment
-
If you eliminate the cats on your 1997, you will need to replace the two after-cat O2 sensors with O2 "sims" to convince the PCM that the cats are still there. Otherwise, you will be looking at an SES light and some codes. Alternatively, the diagnostic for the after-cat sensors can be programmed out of the PCM, but that will leave you with a "System not ready" flag if they hook up to your ALDL connector for an emissions check. Some juridstictions allow one or two "not readiy" flags.
And you do realize that your "two cat system" consisits of one cat for each bank of the engine, and that by eliminating only one of them, your are causing an imbalance between the two banks?Fred
381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor
Comment
Comment