RIWWP

iTrader: (2)

You might be losing your cat. I had misfires from cat failure.

If you feel a power loss under high load, and it keeps getting worse, then this will confirm it.

stinksause

iTrader: (5)

get this if it is your cat http://www.racingbeat.com/FRmazda4.htm

although how would clogged cat cause a misfire code?

AND1

Well i seem to have the same problem, my engine light comes on when i'm doing around 30 / 40 mph. Brought it to mazda on tuesday and they still can't find anything wrong with it.. Another issue is the darn tire pressue montor light. Seems like it has a mind of its own.. Tire pressure is good and tires are new. So they can't figuer that out neither... Any suggestions ?

00RM125

i feel no loss of power what so ever and my cat only have about 2-3k on it. so i dont think thats the issue. but i will look into it if i cant get anything else to work.

https://www.rx8club.com/series-i-engine-tuning-forum-63/still-blinking-engine-light-202411/

created another post. and some other opinions are on there if u need help like me.

alexvikings05

when i first purchased my 8 i was told that i can only use reg. motor oil. i've been reading some of ya comments and it seems like ya use synthetic. would i have a problem using synthetic?

Loki

iTrader: (1)

Before you get flamed to hell and back: this topic has been beaten to death here, there are stickies on the subject. Basically, read those and decide for yourself... there is no conclusive answer.

RIWWP

iTrader: (2)

Oil is classified under "Religious War" here on the forums. Tread carefully lest you lose the pants you came in on.