Hi
I am thinking of getting the Magnaflow high flow cat/downpipe to replace the stock cats, to go with the ECS h pipe which I got a couple of years back.
I have read to avoid an engine warning light I would need to weld an o2 sensor fitting to the rear of the cat and plug the provided hole just in front of the cat so that the o2 sensors are either side of the cat.
Anyone know/tried this or know different ?
Thanks
Quick question on high flow cat
Re: Quick question on high flow cat
Basically, you have 2 sensors per bank. 1 sensor before the cats and 1 sensor between the precat and main cat.
If you are currently running standard downpipes and haven't got a stage 2 map then you will need to put spacers on the second lambda which sits just in front of the main cat once you have fitted the new high flow cats. This is not guaranteed to work though and ideally a stage 2 from the likes of MRC would be preferred as this removes the issue without the need of spacers
If you are currently running standard downpipes and haven't got a stage 2 map then you will need to put spacers on the second lambda which sits just in front of the main cat once you have fitted the new high flow cats. This is not guaranteed to work though and ideally a stage 2 from the likes of MRC would be preferred as this removes the issue without the need of spacers
Last edited by RichieRS on Mon Jul 18, 2016 8:44 am, edited 1 time in total.
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Re: Quick question on high flow cat
Track down/pm the member dufferdude, nice guy and I think he runs the exact setup in his RS4 with a sick sounding exhaust! My next upgrade.
Re: Quick question on high flow cat
Thanks for the replies. Sounds like I need spacers in the first instance.
Re: Quick question on high flow cat
If you get a stage 2 map that stops it think
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