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Here's an update: Got the car back from the dealer, they did the drivers side cat again. "Left catylitic converter did not test within spec, replacing" issues persist but it does have better low end now, no lagging into power. Im annoyed that all they did was throw a cat at it instead of...

Here's the TSB info for reference

Update: A month left in warranty, dealers replacing the passenger side cat likely due to a tsb for the intermittent p0430. They're also doing both exhaust manifold gaskets. This makes some sense as it sounds really loud and farty at cold starts sometimes, and sometimes almost sounds like it's...

I haven't been able to get an answer for similar conditions. Stfts all over the place mostly negative, what happens if you try and hold the rpms in park at say 2k? Does it runaway almost? I've replaced my upper injectors, drivers side o2 (p0430, and both upstream and downstream), and gotten a...

This is starting to bug me and I don't want to lose the engine. Can someone read their car and see what evap system vapor pressure reads? Or some recommendation on where else to look to get an answer for this.

Update: Issues have persisted (weird sounding cold starts, lazy hot starts, air in fuel rail noise intermittent but mostly present with a p0430 code). When the car goes to -32k kpa the evap purge percentage goes from high percentage all the way to zero. When it goes back positive is when evap...

And here's the notes from the trans work the evap purge valve has changed cold starts and hot starts. It used to make a little noise like predetonation when cranking which I can only assume is gas fumes in the intake. What confuses me is why there's a passenger side bias to that. 🤷‍♂️ she gets...

So the new evap purge valve did not correct the 32k kpa to -32k kpa evap system pressure reading... at idle evap purge percentage slowly increases with evap purge leading the commanded evap purge pressure. Can someone do a log of theirs and watch these values and see if this is normal operation...

Seems the issues of reverse was the valve body, will post the tech documents later as well as the evap reading. I purchased a replacement evap purge valve and installed after the car warmed up and already noticed a different tone to the car. Low end doesn't bog nearly as much as it did prior to...

Looks like the dealers getting the car... Had the see manual wrench pop up this morning and the car was in limp mode... Needed to push my car into the spot because it wouldn't go into reverse. Hopefully they fix whatever this is.

Vcm scanner pt 2. I set some new variables and just out of curiosity and sanities sake I decided to add the evap purge vapor pressure reading and lo and behold! The idle dips I notice are happening at the exact time frame the sensor goes from -32,000 kpa to 32,000 kpa. Fuel trims are much...

Also before I forget, they didn't look horrible but here's the injectors. They all look about the same, i kept the old ones as well as the old spark plugs and coil packs to do some testing on them one day and see if the parts cannon hasnt reloaded. Note I got a 2023 long block and they threw all...

Air in the rail noise has not went away, I threw a set of injectors in and the hp fuel line thinking its either unmetered air from a seal or something else. I have uploaded another clip of a weird reaction of the car when removing the fuel rail... any ideas? Edit: just added what noise is...

I have put about 350 miles on the car since getting the throttle body and wow I thought I had a gt before this thing is brand new! Everything's cleaned up except that rail noise but even the cold starts are the same everytime now. Sometimes it'd hot start weird too but those are gone. I did have...

Well ive made some very surprising discoveries... after pulling out the drivers side pump and installing back in I now get ~16 gallon fillup. I watch pretty much all the data you can in the car all the time and all the time since getting the car it's been 8 gallons at 1/4 full. This morning I...

I got earballs for that my good sir. That sounds like a good call for this issue. I will report back after checking.

Doubt it, just not taken care of previously. I change my oils at half the regular intervals just to take care of her. One thing I've been trying to figure out is it sounds like air trapped in the fuel rail. I know that's unlikely but it makes noise near or in the fuel line after the hp fuel...

That make sense, I assumed that the exhaust could be an indicator of health but there are a lot of checks in these cars. They said they didn't replace the passenger side because it wasn't throwing a code and that's why I've been hesitant to even take it with an intermittent issue. I did...

How exactly do we share the hpl files from vcm suite? It says not allowed on here and I don't use Google drive. LTFT AND STFT were suspect to me in bank 2 but im not that good enough to really tell all that but I know when stuff makes frequencies its probably bad 😂 What makes you point to the...

Yeah im kinda limited as I don't have a laptop to run the software so gotta depend on others. It doesn't break up as much as I'd like it to (but also not at the same time) so it's hard to watch it. I've been trying to eye afr to see if it goes lean or rich in that state but haven't had any luck...