So I understand that if the the car is carburetted, the cat will die a swift death, but what if it has decent fuel injection on it? Specifically, I'm thinking of a sbc with a Holley Sniper on top.
So I understand that if the the car is carburetted, the cat will die a swift death, but what if it has decent fuel injection on it? Specifically, I'm thinking of a sbc with a Holley Sniper on top.
If the carb is tuned we’ll (many aren’t) it should do just fine with a cat.
Same with EFI. Keep it tuned reasonably well, you’ll have no problem.
And the the tuning needs to be focused heavily on running stoichiometry. Which is what the O2 sensor does really well. So base most of the calibration on the feed back that it provides.
Ive often thought about adding cats as a way to reduce noise levels in the 3 inch exhaust on my duster. And make it smell less from the exhaust.
In reply to Dusterbd13 :
I have plans in my head to add EFI and a catalyst to the gold Alfa GTV you see in my avatar, more for the smell and CO reduction. So we can drive to California and not get headaches. Now that I have some real space, that my happen.
I have added a high-flow kat to my '87 BMW 325 NASA GT2 race car and can confirm a noticeable reduction of exhaust noise. In stead of the sweet sound of the later 24 valve motor, the car has a '91 non vanos M50, people tell me how loud the fuel pump is. At idle.
That and I no longer fear the sound meter at my events.
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