In my case, If you tried to give it more gas WHILE it is missing, it's a no go. But if you get on the gas more firmly in the first place (like 70% throttle), it will not miss and runs like a champ.

 

Our car went lean as well. I'll ask the guy who does most of our tunning exactly how he fixed it. I'm fairly certain that widebands will read inaccurately if running too rich as well. It has to do with unburned fuel evaporating on the sensor. I'll ask the guy and try to get back to you.

 

That is leading me in the right direction, I believe because his wideband (Wasn't data logging it) would do some really funny things during this "misfire"....

 

Wideband O2 sensor reads o2 level, not fuel level in the exhaust stream. When you have a misfire, all that fuel that is unburned is dumped into the exhaust causing your egt level to go down, what most people forget is that all that air that is unburned is also dumped into the exhaust, causing a higher level of O2 in the pipe and the wideband will show a higher number AFR. This can mislead as a lean condition but it is not. Just a spike of higher concentration of unburned o2 during a misfire.

 

i've always wondered about that. i knew that with the misfire, unburnt fuel would cause my egt to go down, but i was left scratching when the afr was lean.

 

Did you get all of your new hose couplers yet?

I am eager to put my Innovate LM-1 in to get a good wideband log, along with my JDM MAP to really see what the car is doing during all of this...

Get my number from Seneca and give me a call. (Don't want to put my number on here..)

 

I think he's ordered all new plumbing/fmic so new couplers should come with all that. He probably is waiting on that to arrive.

 

 

Yeah we are waiting on the new plumbing, I was hoping he would get it today so that we could put it on tomorrow, as I have a feeling, as does Dave, that boost leaks are also attributing to this issue...

 

it didnt come in yesterday and i'm not sure if UPS delivers on saturdays. i'm sure it will be in next week which gives us a long weekend to mess with it.