Why 2 Cats?
Fleet Mechanic
Joined: Jun 2010
Posts: 1,251
Likes: 8
From: North Carolina
What exhaust did you get? Does it have a single cat and the air pump tube attachment on it?
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Fleet Mechanic
Joined: Jan 2011
Posts: 1,479
Likes: 0
From: West Valley City
Right now, I'm just doing a cat back exhaust. I'll replace the cat after tax time. I'm really impressed with Summit's customer service. They shipped the wrong muffler with the kit, and today they shipped the right one (I hope anyway).
Mountain Pass
Joined: Dec 2018
Posts: 129
Likes: 11
Make sure the air filter is clean. I bought a 84 suburban and someone RTV"d in a charcoal filled air cleaner then set the normal filter around it. I could almost watch the gage go down as I drove. Had to only be getting 8 or less MPG. As soon as I tossed the charcoal filter the mpg increased noticeably.
Lead Driver
Joined: Apr 2007
Posts: 5,958
Likes: 105
From: Houston
Make sure the air filter is clean. I bought a 84 suburban and someone RTV"d in a charcoal filled air cleaner then set the normal filter around it. I could almost watch the gage go down as I drove. Had to only be getting 8 or less MPG. As soon as I tossed the charcoal filter the mpg increased noticeably.
Nothing to be ashamed of we all do it once or twice.
Mountain Pass
Joined: Dec 2018
Posts: 129
Likes: 11
well it was 1:46 am when I posted so I was probably tired and didn't notice lol either way the advice may help someone one day
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