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Hey guys,
First a big hello
I just got a 2006 Mazda mps 6. About two weeks ago
And today the engine light came on lucky the car came with reader so found the code po421 looked it up either cat,o2 sensor or spark plug.
I did notice last two days after a cold start been getting a little miss hard to notice but idles fine and goes away quick
Sso advice do I look at replacing coil and spark plugs first
On furthur research comes up saying 99% is the cat
Thanks any help appreciated
Does it have a custom exhaust or all stock standard?
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Not sure I think it's standard didn't get much history with it has a hyper access machine to change tunes has had some work done has a after market psi gauge not sure about turbo as never seen another one that compare too
Grab some pics of the engine bay and downpipe so we can see what's been done. Could definitely be an aftermarket downpipe.
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hope this helps upon looking underneath car cant see where the cat is
Looks standard exhaust muffler end the other end possibly been replaced ?
Thanks for any help guys my first ever Mazda and a first ever turbo
Looks Like stock DP and turbo to me. Nice intake but. Is you Hyper access able to do MAFCAL?
Havent tried it yet only plugged in to find fault code never used one before comes up with diffrent tune set ups put don't want to play with till I know what I'm doing I got it from a lady she got it from her ex which had done work on it was told had air intake short shifter and was told 230 kws which I can't see how just had timing chain done so I take it the cat is in the down pipe I think the mafcal has already been tuned from what I have seen on Google has maf options
Still trying to get a answer on the code error have reset it two days ago has not come back
Hypertech 62003 max energy sport saver Mazda is what I have
The code your getting suggest that it is a faulty cat, but you said you haven't seen it in 2 days after a reset. It could be a bad fuel.
Power wise, its pretty good.
Yeah been two days no fault I do get a little miss now and then only when cold hardly notice it
Problem solved well a stupid p plater just wrote my parked car off so the shortest car I have ever own three weeks
Looking at another one possible next week
Impressive!
And RIP another 6 :(
part out?
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Insurance took car look out of at auction looking at a car in Canberra next weekend