High Flow Cats
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 1,018
Likes: 52
From: Deltona Fl.
High Flow Cats
Just installed Bassani high flow cats, now getting check engine lite. and it
appears mpg has dropped. Do I need tuning for air fuel ratio, if not what
is causing the check engine lite.. Thanks, for your help :cheers:
appears mpg has dropped. Do I need tuning for air fuel ratio, if not what
is causing the check engine lite.. Thanks, for your help :cheers:
Burning Brakes
Joined: Mar 2003
Posts: 915
Likes: 1
From: UK
Re: High Flow Cats (lar66BB)
Shouldn't need tuning... the O2's should provide feedback to the PCM ref. the O2 content of the exhaust gas and the PCM should then pull or add fuel accordingly in order to maintain stoichiometric AFR. Your MPG has dropped because, for some reason, your part-throttle fuelling is screwed... I would most certainly suspect a loose electrical connection to the O2 sensors, or a bad sensor. Double-check the fitting of the O2's on the new cats. If you can't see anything, check to see if you've thrown any codes.
Cheers,
Ian.
:cheers:
[Modified by i_york, 2:29 AM 3/14/2004]
Cheers,
Ian.
:cheers:
[Modified by i_york, 2:29 AM 3/14/2004]
Melting Slicks
Joined: Oct 2002
Posts: 2,200
Likes: 0
Re: High Flow Cats (lar66BB)
Just installed Bassani high flow cats, now getting check engine lite. and it
appears mpg has dropped. Do I need tuning for air fuel ratio, if not what
is causing the check engine lite.. Thanks, for your help :cheers:
appears mpg has dropped. Do I need tuning for air fuel ratio, if not what
is causing the check engine lite.. Thanks, for your help :cheers:
P0133 Heated Oxygen Sensor (HO2S) Slow Response Bank 1 Sensor 1
P0153 Heated Oxygen Sensor (HO2S) Slow Response Bank 2 Sensor 1
Check the DIC and see if these are the codes you are getting...
:cheers:
Racer
Joined: Jun 2003
Posts: 464
Likes: 0
From: JACKSONVILLE FL
Re: High Flow Cats (SideStep)
I started getting codes after i installed random high flow cats.
P0230 and P0240 i believe, some times they'll pop up five minutes apart.
Nothing to worry about though, you can get them programmed out of your pcm so they don't come up anymore :chevy
P0230 and P0240 i believe, some times they'll pop up five minutes apart.
Nothing to worry about though, you can get them programmed out of your pcm so they don't come up anymore :chevy
