Catless downpipe owners please read and reply
- Thread starter 4DRHTRD
- Start date
SRT82ECOBOOST
New member
The smoke is rolling out of my catless downpipes.
TooFast4SHO
New member
I can see another problem becoming visable after installing these but not these causing a problem...
low cost turbo seals used to keep it cheap for ford, not enough runtime for seals to adjust conditioning, PCV system or a greater failure.
These could pinpoint a system weakness but they are not gonna cause it directly.
low cost turbo seals used to keep it cheap for ford, not enough runtime for seals to adjust conditioning, PCV system or a greater failure.
These could pinpoint a system weakness but they are not gonna cause it directly.
black99lightning
New member
80k miles, no smoke.
2014 SHO PP. At 1200mi car was fine no smoke and no mods. Installed my SW catless DP's and SW cat back. I noticed when I revved the car in the driveway excessive smoke and during decels after an aggressive pull. It was driving me nuts and hurting my brain. It was immediately after installing my exhaust. I refused to believe it.
I didn't want to go through the trouble of taking off the DP's so I just put the stock cat back on and left the DP's(catless). Smoke is virtually gone, when I rev the car and let it hit of the 4200 neutral rev limiter and check the exhaust I can only see a small trace of smoke.
I guess the 3rd cat of the stock cat back cleans it up a bit. I highly doubted that the turbos were bad since the car was brand new and only had 1200mi and it wasn't smoking before the catless DP install and re installing the stock cat back with the 3rd cat and making the smoke all but disappear proved that the turbos were ok. I really wasn't crazy about the sound of the exhaust anyway, I think the engine sounds kind of goofy so I like just the catless DP's as they make it just a bit louder but same kind of note.
Mine smoked the worst when I revved it and held it at the neutral rev limiter and quickly checked the tail pipes. I was thinking maybe since the car is direct injection and the fuel is sprayed very late and maybe something to do with how the spark and rev limiter act maybe there is more unburned fuel I have no idea.
But I do know that putting the stock cat back with the 3rd cat back on made the smoke go away. It was night and day.
Maybe the cats mask a problem. But I doubt the seals in my new car's turbos were bad, they were not overboosted from stock at that point.
I wouldn't think the seals are cheap as some have said, they are garett turbos right? And I could be wrong but I don't think they are like rubber seals that can blow out. I thought they were like precision's turbo seals which are a dynamic ring seal meaning they are metal rings that expand with heat but I'm just speculating there.
So some here will say that my turbos which still have less than 3k are bad and my 3rd cat is cleaning the exhaust and concealing the problem. I can't argue that but I wouldn't buy that logic. So if that is your contention, then you are also saying that my turbos were bad from day 1. I won't subscribe to that but I've been wrong before. Hope this is good insight for you all
I didn't want to go through the trouble of taking off the DP's so I just put the stock cat back on and left the DP's(catless). Smoke is virtually gone, when I rev the car and let it hit of the 4200 neutral rev limiter and check the exhaust I can only see a small trace of smoke.
I guess the 3rd cat of the stock cat back cleans it up a bit. I highly doubted that the turbos were bad since the car was brand new and only had 1200mi and it wasn't smoking before the catless DP install and re installing the stock cat back with the 3rd cat and making the smoke all but disappear proved that the turbos were ok. I really wasn't crazy about the sound of the exhaust anyway, I think the engine sounds kind of goofy so I like just the catless DP's as they make it just a bit louder but same kind of note.
Mine smoked the worst when I revved it and held it at the neutral rev limiter and quickly checked the tail pipes. I was thinking maybe since the car is direct injection and the fuel is sprayed very late and maybe something to do with how the spark and rev limiter act maybe there is more unburned fuel I have no idea.
But I do know that putting the stock cat back with the 3rd cat back on made the smoke go away. It was night and day.
Maybe the cats mask a problem. But I doubt the seals in my new car's turbos were bad, they were not overboosted from stock at that point.
I wouldn't think the seals are cheap as some have said, they are garett turbos right? And I could be wrong but I don't think they are like rubber seals that can blow out. I thought they were like precision's turbo seals which are a dynamic ring seal meaning they are metal rings that expand with heat but I'm just speculating there.
So some here will say that my turbos which still have less than 3k are bad and my 3rd cat is cleaning the exhaust and concealing the problem. I can't argue that but I wouldn't buy that logic. So if that is your contention, then you are also saying that my turbos were bad from day 1. I won't subscribe to that but I've been wrong before. Hope this is good insight for you all
No, I'm going to try and sell the SW cat back. With the stock cat back which has the 3rd cat the smoke is almost non detectable so I'm good with how it is now. I think I like the combo of catless DP's and stock cat back. I can't smell or see the smoke like I could before.
I'd love to get the upgraded turbos and try again the the SW cat back and go totally catless and see how it is but that's not in the plans for this car right now. Especially until some fueling options become more readily available with DI in this platform
Also I drove about 600 miles to burn off any assembly oil in the new exhaust just to be clear.
I'd love to get the upgraded turbos and try again the the SW cat back and go totally catless and see how it is but that's not in the plans for this car right now. Especially until some fueling options become more readily available with DI in this platform
Also I drove about 600 miles to burn off any assembly oil in the new exhaust just to be clear.
PokerMunkee
New member
4DRHTRD said:
Was that A6? He blew his engine not long after and parted it out to get rid of the car. Everything was installed and custom tuned by LMS.... comforting
PokerMunkee
New member
4DRHTRD said:No, BPD Mike, pretty sure his car is still living with the ATP turbos.
Oh, that's right.
Hopefully someone soon with catless dp's will replace the turbos to see if the smoke stops immediately. Will be interesting to know for 100% sure!
wasinger3000
New member
If the gaskets expand with heat removing the cat would lower the sustained temperature causing the gaskets to shrink and let oil past. Correct? That's a big assumption. All this could just be that the cats do an excellent job of hiding the problems from day one.
vernonator
New member
Just put the catless DP's on one week ago. '12 SHO w/PP running Livernois 4+/93 tune and 44K miles. No smoke from exhaust either at idle, WOT or decel.
PokerMunkee
New member
Are guys with a 2013+ only seeing this? Anything change under the hood for 2013?
SRT82ECOBOOST
New member
Half the people that have posted to this thread have said they have seen smoke after install. There is a fly in the ointment.