High Flow cats (91 LS400)
#4
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You'd have to buy a universal cat, and have it welded in your existing exhaust. I don't know who makes bolt-in hi-flow cats for an LS400, but I'd imagine they're ridiculously expensive.
#5
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what about taking mine off and drilling a 1" hole down the center of the flow elements? that would leave enough back pressure, but also give less restriction
#6
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*edit* - Backpressure is a myth, don't even be concerned about it, just keep the diameter of your piping around 2.25 - 2.5"
Last edited by CptnTonus; 04-06-07 at 04:44 PM.
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#8
Stock flow pretty well... I installed high flows on my car as the driver cat died (wasn't plugged, just non functional) and didn't notice any power gains...
Spend that money on beer.
Spend that money on beer.
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