90 Fullsize Bronco cat
Posting Guru
Joined: Oct 2000
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90 Fullsize Bronco cat
I have a 90 fullsize bronco with a 351w, what is the deal with the two cats under there. The exhaust comes off both sides of the engine, comes together into one pipe then goes through two cats. Why two? I heard that the first cat is to keep the exhaust from getting too loud. Is this true? I have my exhaust split after a glasspack, and it does not sound good. I want it loud and nasty, what can I do?
Fleet Mechanic
Joined: Aug 2000
Posts: 1,504
Likes: 1
From: Texas
90 Fullsize Bronco cat
If you want it a little louder, call around and find a parts store that carries direct fit cat kits. Mine only cost me around $175 from summit racing. Plus, once you buy it, you have to put it on. A muffler shop will not put on a convertor if you buy it from someone else. Also, I know mine sounds much better since I added the flowmaster system I had custom built. The glass pack you have may be a little loud for the "sound police".
Just my opinion though.
1988 F-150 Custom to XLT Lariat conversion, 5.0 EFI (formerly 300 I6), 5-speed M5OD, 3.08 rear gears (will be upgraded to 3.55's), Summit headers, Flowmaster muffler W/ dual 3.5" tips 24" long.
Pioneer CD, AC, Tilt, Cruise, Mobile Radio, Lightbar (Force 4 LP6000), Federal Signal PA300 Siren W/100W Siren Speaker. Caution Customizing in progress, Watch for flying tools & Parts!
Just my opinion though.
1988 F-150 Custom to XLT Lariat conversion, 5.0 EFI (formerly 300 I6), 5-speed M5OD, 3.08 rear gears (will be upgraded to 3.55's), Summit headers, Flowmaster muffler W/ dual 3.5" tips 24" long.
Pioneer CD, AC, Tilt, Cruise, Mobile Radio, Lightbar (Force 4 LP6000), Federal Signal PA300 Siren W/100W Siren Speaker. Caution Customizing in progress, Watch for flying tools & Parts!
