P0300 code on 2015 1LE

[graf101]

I am continuously getting the p0300 code on my 2015 1LE. I have the stage 2 LSA conversion and have recently begun experiencing this code popping on and off. It is my understanding that the code should not even be available, as my car is cammed (stage 2 ADM cam) and this code is generally "tuned" out or removed? I have changed my belt, spark plugs, oil, and installed a catch can to help with crankcase pressure, but I still have this annoying code. Car seems to run ok, but has lost a bit of trap speed and is running a few tenths slower in e.t.

I also changed my spark plugs (NGK TR7IX) for the first time since the LSA conversion and noticed a bit of fouling and oil on the driver side rear plug. Do any of you have experience with this or any ideas of what it might be? I am getting frustrated in hunting down what the issue is. Any help is appreciated.

Mods are as follows: ADM stage 2 conversion and cam, springs, SW longtubes, ADM cai, 2.75" upper pulley, JMS BAP w throttle switch, ADM FPCM, 18" Whiteside racing drag wheels w 305/45/18 Mickey Thompson ET Street R's, NGK tr7's, Dad's 7 gallon trunk mount intercooler, Lingenfelter 2 step w CTAP.

[hammdo]

Who did the install? That is a random misfire code (possibly multi cylinders). Vacuum-intake leak somewhere maybe? So many different thing it could be with that code...

Have not had or seen that code myself... I have ~20k miles and many mods since the initial install...

How many miles since install?

-Don

[graf101]

Andy at ADM did all the work on my car. I probably have about 8-10k miles since the install and had never had any issues until recently. :(

[hammdo]

Andy knows how to do those for sure! After changing the plugs, does it still show?

May need to have Andy take a gander at it. There literally are several things that might cause that code. Best to have a scan logged if possible (HP Tuners or EFI Live) would help for sure...

-Don

[SS PANTHER]

I got that code a year after I had my SLP TVS2300 installed and custom dynoed. Took it back to my tuner and it turned out to be 3 oem plug wires were bad. Replaced them and it hasn't shown up again.

[graf101]

I am still using the oem AC Delco plug wires, but I visually inspected them when changing plugs and they appear to be ok. Could they frayed or burned from within? And what type of wires should I go with?

I also know Andy does great work, and am in no way blaming him. Just need to figure this issue out.

[SS PANTHER]

My tuner checked and inspected and found that a couple of wires had cracked metal plug contacts and the other frayed. No burns. I run ARH heat/burn blanket sockets on my wires. He replaced them with new oem's and that was about 5 months ago. I have not seen that P0300 before or after. Prior to getting it to his shop, he told me to drive it very easy and get it there asap. I have since bought some Taylor red wires, but have not installed them yet.

[graf101]

Thank you SS Panther. I ordered some new stock wires and the socks for them.

[SS PANTHER]

Keep us posted if that did the trick. Good luck.

[graf101]

New AC Delco wires w heat socks did the trick. Check engine light is off. So far so good.

[SS PANTHER]

Sounds good. Hopefully that does the trick.

[imponte]

Sorry for resurrection. But i have the same issue. P0300, P0305. But its intermittent, not always. I checked the plug wires. The sixth cylinder,s plug wires was very bad, almost take a part. But fifth seems okay. Im going to change wires anyway. I ll be update after this.