No. You cannot read a Trifecta file with HPT.

 

i have the dejon catless dp..i threw the p0420 code...dejons o2 bung is in the factory location..i seen a thread on here to use spark plug non foulers..drill one out and leave one normal then screw the o2 sensor into that and it keeps it from direct flow..i tried it and it worked for me..its the same thing as a o2 extender

 

Is there any way to clear the code without HP Tuners or Superchips? Would the dealership be able to do it for you? Or would you have to take out your O2 sensor clean it re-install it and then disconnect and re-connect the battery to clear the code?

 

Disconnect the battery ~15 mins to clear the code. Cleaning the sensor won't change a thing, it'll be back eventually unless you get a scanner like HPT to disable the code.

 

Even with mine disabled, the RPD keeps blanking out the Wideband O2 data

 

Might be the same problem we see in HPT after a long DFCO losing STFT data. I don't have an RPD so I can't link the two issues. Maybe you can.

 

I havent had that issue yet, I keep checking since you mentioned it a week or so ago. I JUST got this 2237 thing tho, so Im sure its coming lol..

 

Yeah, it took a month of 90 mile round trip commutes before i popped the 2237 code catless.

 

So is this problem popping up with catted at all? I'm getting myself set to buy a DP.

 

CIA catless here - no codes related to the rear sensor after almost 15k miles on the downpipe, daily driven.

The car did NOT like the cutout open though!

 

I have the Hahn catless DP. I put it on my car 15K miles/7months ago. I have not thrown any codes! Not with the stock tune, or the new GM stage 1 tune. www.modernperformance.com was the cheapest place I found the hahn catless dp.

 

i've had CIA catless DP for about 8,000 miles or so and no codes....just a sexy sound