dnbguy86

I was wondering if any of the 2.2L guys have thrown on a high flow converter, if any of you did, did it set a check engine light ? Im gonna get a magnaflow high flo cat and was just curious, so i can expect it or not.

RedBaseBolt

I don't know of anyone who's done this yet but I'm pretty sure you will throw some kind of code.

Our cars are not as picky as an SS though so maybe not. But be prepared to see an engine light, just in case.

dnbguy86

Well, at first i was just gonna replace the piping, but i figured since i was already doing that might as well throwin in a high flo converter as well. I dont think there will be any problems, just wanna see if any guys that have any would post up their experiences with it, or am i the test dummy here ???

RedBaseBolt

I know I have read in past threads about codes from exhaust and hi flow cats.

redlineblueline

I have the Magnaflow high flow and in the oddest of conditions it will set the CEL off with a P0420 and a P0420 pending.

dnbguy86

I see from your sig you have a 3' cat? The one i plan on getting is like 2.5, so im not sure if that makes a difference. And what are the odd conditions when they are set ?

redlineblueline

Like sometimes in traffic, other times when I'm driving, when its hot, when its cold, when its raining. And any combination you can think of.

rockstarbass1

sounds like all the time to me lol

slowion2

that cat is way too large for the engine breathing dynamics, that's why the CEL is on. it's not doing much if anything I'm sure.

as long as you stick with a 2.25 to 2.5" you should be fine. I know of someone with one of the earlier mentioned sizes who does not get an engine light

dnbguy86

maybe the 3" cat isnt allowing the converter to warm up quick and also setting a cel ? i dunno, id definitely get something smaller like 2.5, 2.25 for my setup.

sunrise_mj

good question... i was wondering the same thing...

Red2.4SS

I've got a long tube (4-2-1) header and a 3" high flow cat (made by international muffler co.) and 2.5" pipe out the back on my 2.4L and haven't had any CEL whatsoever. The magnaflow high flow cat probably does not have enough membrane in it to convert enough gas so the ECM thinks that its not working properly.

redlineblueline

I have my header/downpipe/cat wrapped and since then it hasnt happened plus I think the car got used to it because it hasn't done it for quite a while. I also have a code reader that fits in the driver side glove box thing.

slowion2

that's what I"m leaning towards

that heat wrap is help keep the heat in, so it's warming up faster and not throwing the code, makes sense

redlineblueline

I plan on doing the pipe all the way and getting rid of the aluminum foil heat shielding.