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Discussion Starter · #1 ·
On my way home from a full day of driving at constant 70mph on the highway. I most recently installed the stratified flash tune with the exhaust pops. Came off cruise control and engaged gas (not LSPI or full gas) but my FoST sputtered, CEL flashed, and AP3 sensed no power and went to shut off. CEL turned off immediately and I ran codes on the AP3 which came back with the dreaded P0300. Any advice? Going back to stock to bring it to dealer isn't really in the cards as they'd see the ECM being flashed anyhow.

Mods are as follows:
Depo intake and cobb filter
Depo 3.5" fmic
MBRP catless DP
High flow res
Muffler delete
Stratified "stage 3" flash tune with exhaust pops

I have denso iridium plugs waiting to install just haven't yet, planned on changing them tomorrow morning and clearing code. Good idea or bad idea?
Mainly asking those who have knowledge on this type of situation.
I did mistakenly try to ad alittle more fuel on my fill up yesterday afternoon but if that's the cause I figured I'd see a reaction much sooner then with about 45miles left to the tank.

Thanks for any useful help or ideas.




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· Registered
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65 Posts
Discussion Starter · #2 ·
UPDATE*
Parked for about an hour and came out after eating; checked for codes before starting and the P0300 was cleared. So I'm guessing it was a false read from the tune and its intended backfires/pops/crackles.
Sound plausible?


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