Originally Posted By: Vern_in_IL
Back in the 70's there was a "as seen on TV" kind of deal...
They sold straight pipe kits where you can remove the catalytic converter *temporally* and just install this exhaust pipe, to diagnose a bad converter... of course once you installed the straight pipe, you would never take it back off or buy a new converter.
My Dad's '79 Pontiac Bonneville had one. As far as I'm concerned, any carbureted vehicle can see gains if you remove the converter.
JC and the Boys used to sell them. Perhaps they still sell those "test pipes".
Back in the 70's there was a "as seen on TV" kind of deal...
They sold straight pipe kits where you can remove the catalytic converter *temporally* and just install this exhaust pipe, to diagnose a bad converter... of course once you installed the straight pipe, you would never take it back off or buy a new converter.
My Dad's '79 Pontiac Bonneville had one. As far as I'm concerned, any carbureted vehicle can see gains if you remove the converter.
JC and the Boys used to sell them. Perhaps they still sell those "test pipes".