Who has cat converters with LS swaps

[gnx7]

I ran (2) 3" Random Technology cats on my LS7 cam/headers RX-7 swap and it still went 110mph in the 1/8 and 138mph in the 1/4 on 91 octane. I would say a quality hi flow cat on an n/a setup eats maybe 5-10rwhp. I also hate the stinky unleaded smell without cats.

eBay cats can be found for $50 on up!

[72Z/28]

Originally Posted by gnx7

I ran (2) 3" Random Technology cats on my LS7 cam/headers RX-7 swap and it still went 110mph in the 1/8 and 138mph in the 1/4 on 91 octane. I would say a quality hi flow cat on an n/a setup eats maybe 5-10rwhp. I also hate the stinky unleaded smell without cats.

eBay cats can be found for $50 on up!

Thanks for the input man. Any idea about the cell counts on the these cats? I have found a slim version of stainless steel works cats (2.5 IN &OUT) and 3 inch body diameter. However, it is 100 cell cat that still will not prevent the stinky gas smell.

By all means I will check out the random technology cats

[gnx7]

Random Technology cats are $$$$. I got them free for being in Sport Compact Car Mag back in the day (2005) Ultimate Street Car Challenge.

I'm guessing 200 cell count. Plenty on eBay for under $100 each. Even with cats, full dual 3", Xpipe and dual Magnaflow mufflers the car sounded wicked (and loud).

[clill]

I would spend your time on getting the tune right before considering Cats. Should not be a need for Cats to get rid of the smell.

[WSSix]

Random went out of business a few years ago unfortunately. Their stuff was great and cost very little power on high horse power builds. I'd look to Magnaflow or Eastern Catalyst now. I'd also follow Charlie's recommendation and get the tune dialed in better first.

[72Z/28]

Thanks guys for the input. I received my Thunderbolts Cats but have not installed them yet.

I would also check the tuning as recommended by Charlie.

[WSSix]

Check the tuning first. Excessively rich exhaust will damage the cats.