oooooh, thats the air tube for the cats (it comes from below and is plugged into a crossed over air tube. Honestly, if you still have the stock 4 cat h-pipe, you need to reattach the air pump and run a hose directly to this tube or else carbon will clog up your cats and the car will not run!
oooor....
go all the way. Get an off road h-pipe and then toss the airtube in the trash, making sure to close the airtube hookup on the new hpipe.
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91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior
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