My Miata occasionally goes lean under boost
#1
My Miata occasionally goes lean under boost
Hey everyone, Im new to the whole forum thing and I need some help with my car. I have a 99 1.8l miata with a Jr supercharger running 5psi on a stock ecu. From the looks of things under the hood, this install was done by an amateur at home.
Now for my issues; about six months after I bought it, it would occasionally fall flat on its face under boost even when it only hits 3psi or less. I originally thought the fuel pump was going bad so I replaced it with a new high flow pump and I still had the issue, so then came a new fuel filter, still with no result. It has also been throwing a code for the IAT sensor but I'm not sure if that would cause the issues that Im having. Any help would be very appreciated
Now for my issues; about six months after I bought it, it would occasionally fall flat on its face under boost even when it only hits 3psi or less. I originally thought the fuel pump was going bad so I replaced it with a new high flow pump and I still had the issue, so then came a new fuel filter, still with no result. It has also been throwing a code for the IAT sensor but I'm not sure if that would cause the issues that Im having. Any help would be very appreciated
#19
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It's called garbage. It would benefit you more to pipe the exhaust gas into the cabin and try to sniff it to determine if you were rich or lean and by how much. Be sure to do this with all of the windows rolled up or it won't be as accurate.