tomke92z

Member
I have a 1992 Discovery 1 200TDI with a boost pin and boost ring. I love the car, but I really hate the smell of its exhaust fumes. I know it might sound crazy to some of you, but I'm considering installing a universal Euro 4 catalytic converter. Has anyone ever tried this? What could the consequences be? Can I expect the fumes to be any better? I suppose so...
 
If you can smell the exhaust fumes inside the vehicle while driving you have a big and dangerous problem.
Is your tail pipe in the original location?
Fitting a cat might change the smell from your exhaust but you're still breathing in carbon monoxide.
I'd fix your problem in safer ways before thinking a cat will fix it.
 
Sorry, I haven't made myself clear enough. I don't smell anything inside the car; I only smell it outside, but I still hate it. I park my Disco in a parking space in my residential area, and children often play next to my parking spot. Whenever I start my Disco or come back from somewhere and they are there, I feel kind of guilty about producing all those fumes right next to them.

So basically, I want my Disco to be less invasive to the environment and people around.
 
Last edited:
Sorry, I haven't made myself clear enough. I don't smell anything inside the car; I only smell it outside, but I still hate it. I park my Disco in a parking space in my residential area, and children often play next to my parking spot. Whenever I start my Disco or come back from somewhere and they are there, I feel kind of guilty about producing all those fumes right next to them.

So basically, I want my Disco to be less invasive to the environment and people around.
Tbh pretty much all 200tdi chuff out some black smoke from cold starting, even without the boost rings etc.
 
Maybe time to get a battery car. These are old vehicles that were ok when they were built.
The fumes that we breath in these days, is nothing like 30-40-50 years ago, when buses, trucks and taxis belched out black soot, more people used coal to heat their homes.
Today's air quality is miles better than it used to be.
 
So, you have an old diesel which you have made worse by modifying the inj pump and are now feeling guilty about its emissions.
Perhaps it's the wrong vehicle for you.
Incidentally I don't like the smell of diesels either but unfortunately it goes with the terrority.
 
I’d reinstate the original injector and ensure the engine is fully serviced. But ultimately you won’t get around it being a 30+ year old diesel. It will never be a euro4+ engine.
 
So, you have an old diesel which you have made worse by modifying the inj pump and are now feeling guilty about its emissions.
I’m not too worried about the emissions. I know it’s an old diesel, and there’s not much I can do about that. I just hate the smell of the exhaust fumes, and I’ve always hated it, even before I adjusted the pump.

Tbh pretty much all 200tdi chuff out some black smoke from cold starting, even without the boost rings etc.
True, I don’t notice any difference in the smell after installing the boost pin and boost ring.

I want to install a catalytic converter to reduce the smell around the car—it would be great if it were at least a bit less strong. Improving emissions would just be a nice bonus. I mainly use this car for holidays and weekend trips, often camping in nature, so it would be nice if the exhaust smell were a little less intense.

My question is essentially whether anyone has done this before and what the potential consequences for the engine might be.
 

Similar threads