josh3111

My friend just got a 98 Z. He was wanting a y pipe with out cats that hook up to the stock manifolds to get a few extra horses with out spending too much. Does anyone know of a company that makes these? thanks.

ONEBADASSWS6

SLP makes a direct bolt on aftermarket Y-pipe.

Speed Inc is one of the vendors that sells it, heres a link, just scroll down the page:

http://www.ls1speed.com/catagory.cfm?catagory=Exhaust

josh3111

wow..that looks like it is exactly what he needs....thanks a lot man!

josh3111

*edit..new question*

Is this even worth it...he was saying it is possible to pick up 15 rwHP with just a y pipe and stock manifolds.

ilirw325

iTrader: (3)

the slp y-pipe does not delete the cats, if you want to delete cats as well, you need cat bypass pipes from mufflex or a y pipe from stainless works. slp's retains the cats

98_z28

I Was thinking about doin the same but is it even worth it ??

jag42420

Worth up to 10 HP per SLP http://www.slponline.com/view_product.asp?P=31035 :

Y-Pipe, Larger Diameter 2000-02 LS1 Camaro/Firebird Replacement

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SLP's Y-pipe assembly is available for 1998-2002 Camaro/Firebird with V8 engines. Manufactured from 2-1/2" O.D., 304 SS tubing, it is mandrel bent for smooth, clean bends with superior flow characteristics. This Y-pipe assembly is designed to replace the "flat" factory pipe (behind the stock catalytic converters) and bolt to your stock exhaust manifolds. The free flow bends will increase the efficiency of your exhaust system and make up to 10 additional horsepower depending on the application. This assembly comes complete with installation hardware and instructions.

ilirw325

iTrader: (3)

i had cat deletes from mufflex on my '01 and only picked up 7rwhp when i switched to LT headers according to the dyno. car gets louder without cats too, quality of the sound depends on your exhaust. I kept stock exhaust with a cut out, and there was no rasp, actually sounded good.

NOBR8KSS

iTrader: (12)

I would doubt the SLP piece would make much, if any, difference. MAC used to make a replacement y-pipe that you could order with or without cats. It bolted directly to the stock manifolds, but was something like $500.
For that price, you could get a set of Edelbrock headers.
JC

GR33N GoblinM6

iTrader: (14)

no no.. its not $500.... the MAC Y pipe without cats is $185 from www.ws6store.com

the catted version is $350

2xLS1

iTrader: (25)

The MAC ORY for 98-99 stock manifold cars is still available for around $210. Bassani also makes one for around $250. Thunder Racing sells the Bassani. The MAC is still on their web site, but I don't know what sponsors sell it.

3800RS

iTrader: (15)

buy my stock y-pipe in the forsale section and just weld in some straight pipe where the cats used to be.

NHRAMAN

iTrader: (1)

I originally did that...much better/more sound/noise...

98_z28

i might just weld in the straight pipe would the sound quality be good with slp loundmouth ??

skifast87

I was pretty sure the SLP Y flows just as well as the stock oval.

LilJayV10

iTrader: (39)

For what it's worth, the 00' Hawk I just bought, the car dynoed 303 RWHP, with the SLP lid and the SLP y pipe it went 320. Which one of the two made the biggest difference I don't know.

01SLPSS

iTrader: (47)

I have a Stainless Works Off Road y-pipe for 2000-2002 cars that bolts directly to the stock manifolds for sale if anyone is interested, just took it off the car cause I finally got around to putting longtubes on!!!

02silvaZ

iTrader: (12)

bassani makes one available from year one

GR33N GoblinM6

iTrader: (14)

i was quite impressed with the difference the MAC ORY made... really opens up the exhaust and you can definately feel the difference in power across the RPM range

INMY01TA

iTrader: (1)

Go with the Mac one.