A_LOU_THANG

Has anyone ever heard of welding a converter shell onto a midpipe. Just so it would pass a visual emissions test. I'm not talking about welding in the entire converter. Just the outside shell, the flow of the midpipe won't be obstructed in anyway. I want to go with the prochamber w/o cats, but I want it to appear that I have cats. Crazy question, but wanted to ask anyway...

sitnlopro99gt

nah, some people do hollow out the cats and sandwhich it....

bb 460

Seen people do it and look pretty factory but out here I don't have to worry but emissions or crap like that.[sm=gobble.gif]

A_LOU_THANG

hey bb460, you said you've seen it done, you know where they got the converter shell?

yelw02GT

YES IVE DONE IT and it works mint, as long as you have o2 sims or a tuner to turn them off, it works mint

A_LOU_THANG

What exactly did you do yellowgt? put the converter shells on? If so, where did you get them?

97targa

That will work and is the best ting to do however if you are getting a new midpipe get new aftermarket converter! Some places know those tricks and might not pass you! All-in all high flow converters stop that smell and only rob you of maybe 2 or 3 hp topps unless you are pushing over 500hp at the flywheel then more, but it's all relative! Just get the high flow cats x-pipe it will be about the same as that damn prochamber and sound the same with the cats on it

yelw02GT

i actually did it on my old o/r prochamber, i bought two universal cats from autozone i think, bashed the insides out with a pipe, cut them down the side, and took the two halves fit them around the pipe, tacked them on checked for uniformity and put a bead on, of course it took a little tweeking here and there, but it works just fine, looks like i have 2 cats on there, and with just a 1/4 gap on the top of the pipe no one is none the wiser, if you are a good welder, and i decent faber, or have someone who is, it WILL look perfectly normal