LMM dpf delete P0101 any help? (Canada)

[bob_22r]

this is my uncle truck did a dpf delete for fuel economy, added turbo brake, keep stock tune and k&n filter! everything was fine but yesterday it threw P0101 mass air flow performance code! do i need to modified the stock mass air flow data for the added flow if there is? any tips?

[dansdieselp]

Put the stock air filter back in.

[THEFERMANATOR]

Put the stock air filter back in.

And get some MAF cleaner to clean the MAF off with as it is probably oiled from the K&N filter.

[tokymon]

i have seen where the air will stall when comming to a stop usually with cai, if this is happening while comming to a stop, adjust maf failure air (sorry at work and cant rember the table #)

[bob_22r]

new update! it happen again this time he was driving on the highway cruising and the check engine came on again! yeah the first time it was coming to a stop. i did adjust the upper limit thresold

those are the Maf sensor Parameter any thing to change? the lower value maybe?

{C0905} P0101 Test Enable, Coolant Temp Low -20,065310 °C
{C0906} P0101 Test Enable, Coolant Temp High 99,922690 °C
{C0907} P0101 Test Enable, RPM Low 500,000000 RPM
{C0908} P0101 Test Enable, RPM High 3100,000000 RPM
{C0901} P0101 Lower Limit Threshold 20,055499 Grams/Second
{C0902} P0101 Lower Error Time 15,000000 Seconds
{C0903} P0101 Upper Limit Threshold 49,999860 Grams/Second
{C0904} P0101 Upper Error Time 300,000000 Seconds

[bob_22r]

he did say the truck feel low on power when the light came on!