GOT A P0300 DTC WITH SCT X4

[Monster_Load]

I was running around yesterday and got a P0300. I have a custom tune that SCT helped write with my local shop. I got on it a little bit but not anything crazy.

It's a misfire on multiple cylinders. Am I running to lean? I erased the code, relearned the crank sensor and reset the cams with the handheld.

Anybody have experience with this? Should I be concerned or just see if it happens again?

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[Tommy V]

You can look at ur pids with the x4 look at ur short and long term fuel trims,they should be 0 plus or minus 5.That will tell u if ur running lean or not.

 

[Monster_Load]

You can look at ur pids with the x4 look at ur short and long term fuel trims,they should be 0 plus or minus 5.That will tell u if ur running lean or not.

Thanks.

The only mods I have are FR Sport catback, Airaid CAI non oiled filter and JLT catch can.

 

[Tommy V]

Is ur car tuned for that intake or do u have the venturi that goes in so u dont have to tune for the cai.If u dont have the venturi in the cai and ur not tuned thats ur problem and yes u would be running real lean.

 

[Tommy V]

U do have the airaid cai that requires the tune,if not theirs ur problem,also check all ur connections on ur cai to be sure u have no leaks before the mass air flow meter.My bad after the mass air meter lol.

 

[Monster_Load]

U do have the airaid cai that requires the tune,if not theirs ur problem,also check all ur connections on ur cai to be sure u have no leaks before the mass air flow meter.My bad after the mass air meter lol.

Yes. I had it dyno'd at a local shop, the tuner knows some folks at SCT so they had a tune written with SCT's help.

I picked up 45 hp with the tune so I imagine it's a hot tune. I will contact the shop and see what's up. Thanks.

Edit: The shop thinks it's the spark plugs. Says if it happens again we will put good iridium plugs in with a smaller gap.

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