Ok first off this is regarding the exhaust.....when i bought the truck it didn't have a muffler on it only two cats and a pipe so i cut the pipe removed one of the cats cause it just seemed logical that the second cat was there because there was no muffler and it fit perfect so my question is do i need two cats to pass emmitions? or just the one cat muffler and pipe?
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Re: 87 ford bronco
Yes you will need both cats to pass depending on where you are. i have had 3 broncos and im drivng one now and cut one off and have the muffler and one cat and it passed. as long as your not in california i think you will be fine with just one
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You have been conned . To blow sparks means that the exhaust gas temperature is excessive or that the cat converter is failing. Run the fault codes to ensure that the system is running as intended ( O2 and HO2s sensors) are ok and that the cat converter is working. BY the time the exhaust gas gets to the muffler the sparks would be out as the highest temperature is in the cat converter while the rest of the system is in a state if cooling down
look under truck when cool and from engine follow exhaust pipe towards back will see what looks like a small muffler [ usually about 2 to 3 feet away from engine and before the muffler] thats ur cat conv if ur doing it yourself make sure before going near cat that truck hasnt been running and is cool cat can cause extreme burns up to 1/2 hour after truck has been turned off-also some are bolted in others are welded if welded in measure before cutting old out sometimes may have get an adapter length and extra clamps
Just take it into the exhaust people and tell them that you need a new muffler ONLY. welded into the place of old one as all your problem is the BAFFEL plates have come loose and the welding is only spot welded and isent any good So a new muffler is ALL YOU WANT
Sounds more like an ignition misfire. Sometimes also, an exhaust leak in the pipe above the sensor can add enough air to cause the mixture in the pipe to ignite and cause the same problem. The first "weak point" in the exhaust is the muffler which is why it blows it up. Cutting out the cat will not solve this.
It will not Hurt anything. It is the First thing that I do whenever I buy a New Truck. It Increases Horsepower and Mileage + Sounds Really good with Flowmasters. Nothing to Worry about. I have NEVER had a Problem doing this. Please Rate My Response! Thanks!
Most aftermarket exhaust systems are cat-back. You defiantly need to keep the cat to comply with local emsisions regualtions. However you can remove the mufflers and replace them with high flow mufflers or resonators. Try to replace them with something not too loud so you are in accordance with noise laws in your area. I have a 2000 s10 with no mufflers, just a cat then a y-pipe to make it dual with two resonators coming straight out the back, I live in the states and made sure this sytem was 50 state street legal before I purchased it. I suggest you do the same to avoid harrasment by the police.