Has anyone installed the catalytic converter in the downpipe?
Has anyone installed the catalytic converter in the downpipe?
Why would you want to do that?
John Laing
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-- Alexis de Tocqueville
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--Ayn Rand
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I did it but on a 3.5l TT EcoBoost motor
AJ (no More Alan) 84 Rampage RT TIII/568 Quaife 87 GLHS dealer optioned Red 16V Masi/568/Quaife
90 Masi 16V White/Ginger/Black
89 TC Masi 16V Red/Ginger/Black
86 GLHS #110 RoadRace Built 89 CSX-VNT Recaro Car
89 Turbo Mini 'Woody' 85 GLHT 'RedBox'
2014 Explorer DD'r 3.5Twin Turbo Ecoboost AWD and 500HP
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trying to fit a resonator on the omni....totes out of room
- - - Updated - - -Originally Posted by johnl
About the same size cat I was looking into.
I did it but on a 3.5l TT EcoBoost motor
If your totes are out of room, just throw the cats in the scrap pile. Are you inspected for them in TX? If not, I see no reason to run one.
No cat requirement in texas past 25 years old but I want to run one. Yes I'm crazy...lets move past that part.
Acknowledging the problem is the first step toward solving it!
I would only be worried that you'd kill the cat due to heat.
mounting it that close to the turbo will really kill exhaust flow.
why exactly do you want to run a cat if you dont have to? have SJW neighbors who are nosey or something?
Very SJW area I live in. Thought about mounting in the pipe that goes perpendicular to the rear section but that area seems real tight.
I thought they had to be close enough to the engine to light them off, but far enough away not to kill them?
If you are thinking about one of these CCs don't do it:
https://www.summitracing.com/parts/m...FQuAfgodJAQI7w
BAD IDEA!!! The substrate of a catalytic converter occupies space. That's why the body of a full size CC and muffler expands to allow enough space through the substrate without reducing flow.
One of our customers was having drivability issues with his Omni. Backfiring, loss of power, glowing turbo, etc. We got it up on the lift and found one of these miniature CCs. Once we replaced it with a full size CC and had it back on the dyno it gained 60 HP. Also, back pressure kills turbos. If you have a loud exhaust it would be better to add a resonator or larger muffler to please the neighbors. Whatever you do stay away from the Mini CCs.
Chris-TU
Chris Wright www.TurbosUnleashed.com Chris@TurbosUnleashed.com 602-76-BOOST Tech/Sales#: Monday-Saturday 9AM-7PM MST Proudly Serving the Turbo-Mopar Community since 1997 TU is a performance, not marketing company. We provide accurate performance data on all our performance products. Fabricating data to make us appear better is just not our style. Do the research before you buy. ROCK BOTTOM PRICES WITHOUT THE HIDDEN HANDLING FEES.... -----HOME OF THE 9 SECOND FWD T-M CLUTCH-----
Chris thanks for the heads up.
I have a stratus muffler on the omni now and db's are 90. Need to get down below 85 but cant find a place for any other parts.
90 at cruise, or idle?
idle
*If* I had a car here in Cali that was *track only* and had a bolt in/bolt out CC/test pipeThe bung is for the WB.
AJ (no More Alan) 84 Rampage RT TIII/568 Quaife 87 GLHS dealer optioned Red 16V Masi/568/Quaife
90 Masi 16V White/Ginger/Black
89 TC Masi 16V Red/Ginger/Black
86 GLHS #110 RoadRace Built 89 CSX-VNT Recaro Car
89 Turbo Mini 'Woody' 85 GLHT 'RedBox'
2014 Explorer DD'r 3.5Twin Turbo Ecoboost AWD and 500HP
My profile page has over 20,000 views, I'm somebody LOL
Are you measuring right from the pipe? I had a side exit 3" exhaust on my shadow and it would be about 90db in the car while cruising at 2250-2500rpm. There wasn't much to the car at that point, so that may as well have been taken outside a couple feet away. I have an oval magnaflow muffler on my NYer now and it's side exit. I record about 83-84db even at freeway speeds in the car.idle
Measurement at ear level ten feet from the car toward the rear.
I have about 12" to play with. Time to hack the exhaust up me thinks.
Holy cow. Let me see what muffler I have in the NYer for a reference. My Shadow was quieter than that with no muffler.
Wow! Really? My car is freak of nature then.
Perhaps not. I had an exhaust which ended under my black Omni and it played the whole car like a drum. It was insanely loud considering there was a pretty big muffler under there. My Daytona was pretty loud too with just the muffler and cat cutout of it. I think there's something to the 3" exhaust letting it quiet down some.
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