SLP says that their headers come with a "y pipe." I just recieved my headers today and there is no "y pipe" in there.... included are the pipes that connect TO THE y pipe, but no actual "y pipe." Why do they say that when they really mean something else? Or am I just confused...

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***The driver formerly known as 89IROCZ***

1989 Chevrolet Camaro IROC-Z
350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back (currently no muffler, sounds on webpage), SLP 1 5/8 Coated Headers on order, 3.23 Posi rear, Hypertech chip with 160stat, Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, throttle body coolant bypass, Spohn SFC's on order, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)

Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's

1989 Chevrolet Celebrity Eurosport
2.8 MPFI, no mods
225,000 miles and still ticking!

More info, pictures and sounds (of the IROC) available on my webpage: http://go.to/iroc-z

AOL IMer: GPA 0point0

 

The SLP's I got for my truck came with a "y pipe." Not sure about any other apps.

BTW- One thing about the SLP's that I got doesn't seem right. They relocated the boss for the O2 sensor from the joint in the 'y pipe' to the header for the left bank. Wouldn't this give an incomplete/inaccurate reading???

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1993 C1500 Indy 500 Edition
1992 TA TPI setup
Stock motor, new one being built now.
www.geocities.com/wsleigh

 

The O2 sensor has to reach 600° F before it is operational. For this reason it should me mounted as close as possible to the exhaust port. If it were mounted at the 'y', it would never reach operating temperature.

To answer your next question: yes it would make sense to have an O2 sensor mounted on each bank, if the ECM could use the bank to bank differentiation(my BIG word for this week). But, because our ECM's can't adjust fuel trim differently per cylinder banks, there is no need for a second sensor.

The ultimate setup would be to have one sensor per cylinder(and you thought you had a rat's nest of cables now?). And an ECM that could do individual cylider fuel trim. But with $700 extra worth of sensor's(and 7 more sensors that might fail and need replacing) you can probably see why GM didn't go this route

[This message has been edited by 88IROCs (edited July 26, 2001).]

 

The SLP headers come with a y-pipe but you need the conector pipe to the cat. I just got mine from summit 1 month ago. Had to order the connector pipe and installation kit extra but the y-pipe was there. You should call who you ordered it from they left it out of the order.

 

I don't think the ones for dual cat cars come with a Y pipe. I could be wrong though.

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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship :
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz

 

All SLP headers come with Y-pipes, (kinda justifies their high price). The dual cat setup gets you a modified Y-pipe designed to feed into 2 cats.

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92 Camaro RS, LO3, 5-spd, T-tops

Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Z28 Grille w/aftmkt fog lamps, MacEwen white-face guages
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, 3.42 gears w/Torsen posi

 

Ya, you get the pipes thst connect to the cats, but not the actual y-pipe which is after the cats

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90 IROC 5.7l (L98)
ram air, K&N's, air foil, full exhaust

LIKE A ROC

http://members.nbci.com/IrocZgarage/home.htm

 

Unless you changed your rear end, you should have a 3.27 ratio 9-bolt, not a 3.23 ratio 10-bolt.

And yes, the SLP y-pipe only goes to the cats, not after the cats, on dual-cat models. You're supposed to re-use your stock pipe or make up a custom one like i did. I think they did that because people change the cats and they end up being different size lengths. If they provided the pipe it wouldnt fit if you have other than stock cats.

And yes, they do provide a y-pipe, and its a better design than Edelcrocks. Congrats on purchasing the best headers for your car.


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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

The new cars that have SFI have more than one O2 sensor, I think 4 maybe? They need them to control the mixture to each cylinder.

[This message has been edited by Keith5 (edited July 31, 2001).]