What the heck is a "test pipe"? The guys on probetalk.com said you can go to a muffler shop, and they'll make you a "test pipe" in place of the CATS. Anyone know more on this?

-AR

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2001 F-150 XLT 4X4 Off-Road, S/C, FS, Black[*] 4.6L Triton V8 HPI[*] 5 Speed / 3:55 Reg. Axle[*] Keyless[*] Premium Audio CD

Mods:[*] K&N Cold Airbox / Throttle Body Mod.[*] Flowmaster 40 (3" x 20" "Turn-Down") [*] Cranked Torsion Bars[*] APC XENON PLASMA Super Whites[*] Bugshield[*] Bedliner[*] Ventshades[*] Taillight Covers (Slotted)[*] "Light Argent" 4X4 Off-Road Decals[*] K&N & Flowmaster Stickers (Under the Hood)

Audio:[*] Rockford Fosgate G360A2 Punch Amp[*] JL 12W3-D2 (JL ProWedge Box)

Build Date: 8/23/00 (Kansas City Plant)

arobbins@mail.liberty.k12.mo.us

 

basically it is just a pipe that takes the place of your cat. It is only leagal during certain racing events. A definite NO NO to drive around daily with one of these unless you like to take a lot of chances. But then again I guess you would only get caught during an inspection. Also some vehicles have problem running a test pipe because of the O2 sensor.



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Jim Clark
1998 F150 STX
4.6L Reg Cab
Short Bed
Mods coming soon

 

the test pipe replaces a suspected bad converter as a diagnostic aid. i believe they were used more commonly with early converters before OBD and of course for racing or off road use.