question for diablo guys about 02 sensor

Post by **mikel** » Mon Apr 26, 2010 11:54 am

The 03 models are set up very different. They do have limited capabilities.

bighemitex · Post by **bighemitex** » Mon Apr 26, 2010 1:33 pm

mikel wrote:I guess if it is just one, yes, it could work assuming you can have one not ready.

the texas law regarding inspections says one not ready is still passable on a 2001 and up and my last few inspection reports have passed with all readys. I need to get my rear 02 turned off before my inspection in June so i can try, if it doesn't work i will just load my regular tune and drive it a while until it goes to the ready status. Is there a status monitor pid for the obd2 on the datalogging?

bighemitex · Post by **bighemitex** » Mon Apr 26, 2010 1:35 pm

Frans96ss wrote:So your telling me i just paid $2500 for this software and i cant even turn off the rear 02 sensors? Are you kidding me?

you could always try turning off my rear o2

haha

my05hammer · Post by **my05hammer** » Mon Apr 26, 2010 5:10 pm

Besides throwing a code, does removing the cats and leaving the secondary O2 sensors in the pipe impede the performance of the vehicle at all? Like reducing power until the code clears etc?

Frans96ss · Post by **Frans96ss** » Mon Apr 26, 2010 6:19 pm

mikel wrote:The 03 models are set up very different. They do have limited capabilities.

This is a 2010

Post by **mikel** » Mon Apr 26, 2010 6:29 pm

Frans96ss wrote:
mikel wrote:The 03 models are set up very different. They do have limited capabilities.
This is a 2010

So your telling me i just paid $2500 for this software and i cant even turn off the rear 02 sensors? Are you kidding me?

Fran, this thread was in reference to an 03 Ram.

When you came in and asked this, you did not specify anything...

There is nothing keeping you from disabling rear O2 sensors on any application supported by CMR, not sure why you assumed otherwise?

bighemitex · Post by **bighemitex** » Mon Apr 26, 2010 7:37 pm

my05hammer wrote:Besides throwing a code, does removing the cats and leaving the secondary O2 sensors in the pipe impede the performance of the vehicle at all? Like reducing power until the code clears etc?

no, the rear o2 is just a cat monitor it has no bearing on performance. many guys do this with no ill effect.

my05hammer · Post by **my05hammer** » Mon Apr 26, 2010 7:55 pm

bighemitex wrote:
my05hammer wrote:Besides throwing a code, does removing the cats and leaving the secondary O2 sensors in the pipe impede the performance of the vehicle at all? Like reducing power until the code clears etc?
no, the rear o2 is just a cat monitor it has no bearing on performance. many guys do this with no ill effect.

Jeeze!! I wasted $40 on a sim I didn't need. We don't test here!! I can pull the cats, sensors, and bulb with no ill effect and if we ever test I can just throw it all back on the truck.

Cool.

PS> For racing only...

bighemitex · Post by **bighemitex** » Tue Apr 27, 2010 10:14 am

i wouldn't pull the bulb in case you get some other codes that could have bearing on performance. I would have the rear 02s written out to clear the rear o2 code though

bighemitex · Post by **bighemitex** » Tue Apr 27, 2010 10:15 am

i have heard some guys actually wrap the rear 02 with foil and tuck it up into the heat shield and it makes no difference on how the truck drives

neidan · Post by **neidan** » Wed Apr 28, 2010 7:38 pm

Frans96ss wrote:So your telling me i just paid $2500 for this software and i cant even turn off the rear 02 sensors? Are you kidding me?

I don't think he's saying you can't, I think he is saying you can't and pass inspection.... That's what I'm getting anyway...

duster360 · Post by **duster360** » Thu Apr 29, 2010 8:48 am

bighemitex wrote:it can't hurt to try it, but it is a waste of time. the guy i mentioned is an expert with those electric sims and he said it won't work on the hemi pcm. if you can find a way to make the electric sim for the o2 codes work start selling them and you will make a killing.

NGC PCMs use a 2.5v offset on their O2 single circuts. Where a normal O2 sensor reads 0-1v, the NGC is reading 2.5v-3.5v. Thats why the simulator won't work. An electronic simulator would have to have the same 2.5v offsett

I've installed wideband into several NGC vehicals to replace the upstream O2 and used its analog output to feed the PCM for closed loop. In doing so, I had to configure the analog output to go from 2.5v-3.5v.

All the PCM is looking for is a slight delay in the 1/2 reading compared to the 1/1. This is why non foulers seem to work. You could probably do that with a small circut as well.

bighemitex wrote:Is there a status monitor pid for the obd2 on the datalogging?

In my 03, all you need to do is watch the CEL. After the first start up the CEL will light and then if it goes off a few seconds later, you're good to go. If the CEL comes on and then starts to blink for about 5 seconds, its "not ready".

The PCM will take up to 40 warm up cycles(cold engine to 100C) without a Code to go from "Not Ready" to 'Ready.'

bighemitex · Post by **bighemitex** » Thu Apr 29, 2010 11:29 am

yeah i know if it blinks if its not ready but i was wondering if there was a way with the predator to see what monitors are not ready