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Got an 07 Speed3. 86,000 miles, runs great except trying to start it when it's lukewarm. Cranks a while before it fires, plus getting CEL off and on. Just put new plugs in. Anyone else run into this? Also, it runs best on Shell gas. Dealer told me about running Shell. Seems to work.

I'm at 55,000 miles with my 07 Speed 3. I have the service manual and can not find anything about where and how to change the fuel filter. Is there one? There has to be. I'm well aware of dealing with different fuel line fittings. Bleeding them off, done it before. Also checking valve...

Been a while since I've been here. Got an 07 MS3 that the dealer finially figured out why it ran like crap. Fuel air ratio monitor, or someting like that. Runs like a champ now. Got 24000 miles in the first year. I do a lot of freeway driving to work. Rather fast on the way home, on a desolate...

I loved this car at first, even after the the throttle stuck twice on the all weather mats. But soon it would start it's routine of running like crap till I let it warm up and hammered on it at 50 in 4th. Then ran great. Now it runs like crap all the time. Bucking and surging all the time, fun...

Read somewhere that certain Mazda dealers can install an upgraded intake and exhaust thats good for 298HP. Or at least get the parts.