2018 Camaro SS with a whipple, P0101 & P1101, need some help

[69gearhead]

Got this car, cleaned up WOT fueling, car runs and drives great. During some driving events such as stabbing the throttle and getting off of it quickly I noticed in the scanner that the cylinder air mass spikes to 7 and then throws these two codes, P0101, P1101, and then driveability gets crappy. I smoke tested the engine for vacuum leaks, checked all associated wiring, plugs, pins, etc. I even replaced the MAF sensor with a new AC Delco. I'm sure its due to the throttle slamming shut under boost. I've tuned a few boosted applications and haven't came across this situation, am i missing something tune related? I have searched the forum high and low and cannot seem to come up with a solution, any input or advice is greatly appreciated.2018 Camaro SS Whipple MAF WOT 7.hpt2018 Camaro SS P0420 P0430 off Catalyst test off secondary O2 off 3a.hplScreenshot (5).png[ATTACH]

[lsxrx7]

Im getting the same codes today with a Whipple on it. Im also getting a P00CA an P163A. This car is 2019 Camaro.

[69gearhead]

I?m wondering since the VVE table isn?t scaled for boost is what?s causing it??

[TriPinTaZ]

Are you exceeding a MAF frequency of 14,500hz during WOT pulls? Your attached log doesn't have any high RPM runs in it.

When you say the Cylinder Airmass spikes to 7? Do you mean 7.0 Airmass Ratio? That is more than 3 times higher than it should be under boost.

[69gearhead]

Highest MAF reading I?ve got at WOT is 9900. And yes cylinder air mass reading is 6.82. It shouldn?t be no more than 1.4

[69gearhead]

2018 Camaro SS Whipple MAF WOT 7a.hpl Here's a scan with a WOT pull

[TriPinTaZ]

I'm not sure where you are seeing your Airmass at 7??? See my attached view of your last log. Your codes are related to the MAF being out of range but your max range is higher than you are seeing.

cmawtf.PNG

[69gearhead]

look at the screen shot i posted above, when you whack the throttle it does it.

[69gearhead]

If you open the scan i posted above you'll see what i'm talking about, i appreciate you taking the time to reply

[69gearhead]

here is a shot from it

[TriPinTaZ]

Where is your supercharger BPV venting to? It's almost like when the throttle slams shut the bypass valve release is blowing real hard into the MAF. Except the MAF isn't seeing that sort if thing.This is odd.

[69gearhead]

its a whipple kit, it vents back into itself2018 Camaro Whipple.jpg

[lsxrx7]

Have you figured this out?

[69gearhead]

Not yet, pushed it aside for the moment. Going to put headers and mid pipe on it then get back at it

[69gearhead]

So I installed headers, exhaust and got rid of the cats. the drivers side cat looked like it was starting to fall apart in the inlet side. But I'm still getting the P0101 and now P0121. I have cleaned the throttle body, checked all wiring, etc. I'm at a loss of what to check next.

[TriPinTaZ]

Here, try this. You need to disable the airflow tests under Engine Diagnostics > Airflow tab.

2018 Camaro SS Whipple_taz01.hpt

[69gearhead]

So I changed it and uploaded, I can't get it to throw the code now, at least so far. I hope this fixes this, now the only thing is it has some slight bucking or jerking while lugging it in high gear, 1400rpm range at 50-60 mph. there is a P16A1 code set but I cdon't know for sure if its from all the chaos from the previous issues or the TB is has a bad TPS in it.

[TriPinTaZ]

You need to log the bucking and see what else you need to tune. I don't think that it would be related to the codes for airflow delta that you just fixed with my changes. That was just causing a code to be set and then likely limp mode or something kicked in.

[69gearhead]

I?ll do just that tomorrow, I can?t thank you enough for following through with the suggestions and help, I truly appreciate it. I will report back with what I find.

[69gearhead]

2018 Camaro SS bucking.Channels.xml2018 Camaro SS bucking.Graphs.xml2018 Camaro SS bucking.Charts.xml2018 Camaro SS Whipple Headers cruise bucking.hpl

Around 14-1500rpms I'm getting the bucking, you can accelerate out of it but cruising 60ish mph it is annoying. I don't see much spark fluctuation. Any ideas?