Anyone run a set of high flow cats on their swap. I know it might seem silly for a car built in 1966 but I guess I'm just too used to not smelling the engine in new cars and mine kinda stinks.
Maybe I need to take a trip back to my tuner to see if its too rich?
If anyone has done it do you just find a universal model that fits your system and install them without doing anything else? My rear o2's were already deleted from the tune and my harness doesn't have provisions for them so hopefully those aren't required.
I have the same issue, stinky exhaust. I was contemplating the cat attempt as well. I know that Magnaflow makes a wide range of cats in many various dimensions. Some have air fittings and some do not. Some also have O2 bungs. Not sure about the rear O2.
A lot of the gas smell can be tuned out without having to run lean. I have run without cats on my car before and the only time I got a gas smell was after start up because I have the after start enrichment too high I think.
Also, the rear O2 are simply there to tell the computer that the cats are working. They are for emissions only. It will not affect A/F ratio.
__________________ 94 BB Rx-7 02 LS1
Tick Centri Cam, mild ported 317's w/ Gold duals, Comp trunion rockers, LS6 intake/tb, JRT LT's, LS3 Inj
Pro 5.0 & Steeda Tri-ax handle, Built T-56, Monster LT1S Twin & 4.10 torsen diff
3030lb A/C and full interior w/driver and stereo. :-)
All good info thanks! Mine was tuned on a dyno so I would have to ask the tuner about working on it some more. But for 4hp difference if it completely solves the smell problem I think its a good thing to have.