easytoremember

iTrader: (8)

Someone told me there was a company that makes straight pipes to bolt in place of the cats.... i just think it'll hard to get a welder up there, anyone know who makes the straight pipes with the flanges, or know where i can get the flanges?

9000th01ss

iTrader: (10)

You need to get a non catted Y for stock manifolds. Cost about $200.
The only other option is to cut your cats out and use the flanges but it's a real pain in the *** to get the angle right to weld it back together.
Theres a guy on this site that buys cats with the ends cut off, he pays I think $140 a pair so there more than half your non cat Y right there.

1996firebirdformula

iTrader: (3)

Don't remove cats. unless you get longtubes. And once remove cats it will throw code and SES light comes on. And get crap gas milage

9000th01ss

iTrader: (10)

I have a car with gutted cats (2001 Z28) and one with LT's and an ORY (2002 SS).
The codes are tuned out, the tune is stock, gas mileage is average of what they were stock.

easytoremember

iTrader: (8)

it won't throw codes if you have an 02 sim,

got a link for the catless y pipe?

nuts to long tubes on a stock engine.

2002_Z28_Six_Speed

iTrader: (19)

I get better gas milage without cats. Could of been factored into other supporting mods though.

Fifedogg

iTrader: (15)

I say stay with the Cat's unless you plan on doing LT's. Even then it adds more rasp to the sound of your Exhaust. It seems like a lot of work for maybe 5 HP dont you think?

9000th01ss

iTrader: (10)

Doesn't add more rasp. I was putting the car back together, I didn't take them out to gut them and put them back in. I don't think I'd take them out of a running car to gut them, I'd go with the pipe.

That pic is from WS6store, on the sponsors list to the right.

NHRAMAN

iTrader: (1)

Removing stock cats will not do anything for your gas mileage..1 way or the other...unless they were old/clogged...then you will get better..but really not noticable.

406malibu

if im reading this right your saying its nuts go go with long tubes on an otherwise stock engine.... I hope your kidding... LT=about 12-17 hp..... on an otherwise stock engine.

easytoremember

iTrader: (8)

i think can think of better ways to spend the money imho.
is it nuts to do it, no.
Its a figure of speach as in "screw that" or "F that" not that people don't do it, or shouldn't. I would just rather spend the money on other things imo.

what would I rather do?
intake, rockers, full exhaust (why stop at just long tubes), time on the dyno. I bet you could squeeze an ez extra 20 hp out of a stock engine with stock exhaust with just a trip to the dyno. If I got an extra 30 out of an L67, im sure 20 out of an ls1 isn't too much to ask for.

just my .02

TRlGGER

I have a newb question.............here it goes..............what are LT's?

quadd2244

iTrader: (13)

LTs would be Longtube Headers.

Indukted1

we can build you a test pipe with flanges! give me a call if your intrested!410 833 3713