Aftermarket Catalytic Converters

[Egg_Head]

I've used this group for replacement cats for the W210. Good NC company, nary an issue.

Emissions Products - AP Emissions Tech, LLC.

EMISSIONS PRODUCTS AP Technologies is a Full-line Emissions Supplier EPA and CARB Compliant Product Offering Product Quick Links: Catalytic Converters Diesel Particulate Filters (DPF) and Diesel Oxidation Catalysts (DOC) Custom Catalyst Solutions Catalytic Converters Diesel Particulate Filters...

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[D60]

Ok Ill just get something from rock auto, i read a bunch of reviews of the amazon ones and some people aren't very happy with them aftet a few months.

i have no clue how to check or adjust fuel trims on this car, its a 2008 kia rio

To check fuel trims you buy a scanner. One of the BT based systems could probably get you going extremely inexpensively.

You don't adjust them but figure out why the ECM is if they're off. Typically vacuum leaks have it adding fuel. Something like a leaking injector has it trying to pull fuel. This is super-simple-101 but if you saw it with negative trims at or above 10 that could mean it's trying to pull excessive fuel because something is allowing unmetered fuel into the combustion chamber.

Misfire codes are also worrisome, but you'd get a flashing CEL when they're occurring (theoretically) and a constant CEL after ‐‐ but it sounds like you already have the latter, so you wouldn't necessarily know if additional codes join the party.

You'd want to be confident your pre-cat O2's are good to trust the data. But if you're not getting codes for Sensor 1 on either Bank(s), I'd say you're safe to trust it/them.

 

[SHOZ]

I use Torque and watch the fuel trims on #1 but voltage on #2, assuming there is a #2 and if there isn't then I'm watch the temperature on #1.

Fuel trims on the Genesis Coupe are really boring as they are generally around +-1. Voltage on the second O2 will tell you how well the cat is doing, assuming there is a cat.

My Accent the fuel trims would rise to double + digits. Ran OK. If I drove out on the Interstate at +60 mph then the trims dropped to +3 or lower. Turns out the OE fuel mapping is really lean at under 50 mph which is what most of my driving is.