GEN2 Translator & Conventional Chip Setup

[Dean]

It is that wonderful time of year for me where I have to pass a smog check by the end of the week. I replaced my GEN chip with a conventional chip, and made the following changes in the GEN2 setup:

MAF Output: Stock GN MAF
V-Out1 Mode: Use Set Point
V-Out2 Mode: Use Set Point

The car runs, but not great, particularly at idle, and I see that the idle AF is ~25. Did I miss something in the setup?


My unchanged parameters:
MAF Input: 3.5" MAF
# of Cyl: 6
Displacement: 3.8
Load Source: MAF/RPM
Wideband O2: None
Aux Log Mode: No Aux Log
Main Scale: Zero
F Out Max: Zero
V-Out1 Set: 2.500
V-Out2 Set: 4.000
Afterstart: 0
Lo Load Pt: 32.5
Mi Load Pt: 100.1
Hi Load Pt: 143
F Out Max:
MAF Limit TPS: 0.000
MAF Limit : 0.0
MAF Krpm: 0.0
Idle Flow: 12.0
Idle Filt: 2.00
AF TR Delay: 0.0

Hopefully it is something obvious to a more experienced GEN2 user. Worse case, I'll take the GEN2 out and replace it with an old T+. Tomorrow is my deadline.

Thanks,

 

[granatl]

Honestly, you'd be better off using the Extender chip. But make sure you don't set it up for open loop idle. And, set the low-speed fan turn-on to the higher temperature. The hotter the better (the cleaner the idle emissions will be). Don't forget to drive the car for a while so that the BLM's re-learn once you re-install the Extender chip. If the car is due for an oil change, now is a good time to do that too.

 

[Dean]

I thought that without the EGR function the Extender chip would be worse!?

I don't know about changing the the "loop" or fan-on temps with the GEN2/Extender. The conventional chip has higher fan on& off temps. I will drive it to learn, and yep, I changed the oil.

 

[TurboDave]

Honestly, you'd be better off using the Extender chip. But make sure you don't set it up for open loop idle. And, set the low-speed fan turn-on to the higher temperature. The hotter the better (the cleaner the idle emissions will be). Don't forget to drive the car for a while so that the BLM's re-learn once you re-install the Extender chip. If the car is due for an oil change, now is a good time to do that too.

He's in Kalifornia! That Extender chip will never get him through their smog checks. Been there done that!!

Dean, is your "conventional" chip a smog chip??? Has to be there.

 

[Dean]

Dean, is your "conventional" chip a smog chip??? Has to be there.

Yep. I started with a BBKJ file, modified the Injector Constant to 60, and bumped up the fan on and off temps. Very straightforward.

So, I pulled the GEN2 and installed the T+. Oddly the AF #s are still high, though it seems to run fine. I'm wondering if that has something to do with the Power Logger / SM tripling the AF values?

 

[Dean]

So, here we are two years later (I barely passed last year) and the same thing, AF #s high at 17 this time, while idling at ~700-725. Idle BLMs are 151.

Anyone know why the AF#s are reading so high, and is that why the BLMs are being driven up?

 

[TurboBob]

AF meaning airflow on the scanmaster or AF like AFR.... ?

the PowerLogger rescales the airflow reading (even on the scanmaster) based on the selection on the F3 page.

Bob

 

[Dean]

Yes, as in airflow GPS.

I haven't used the PL much at all, so I'm not familiar with the F3 page. I pulled up the Manual and I believe I see what you are referring to. There is a "MAF Display Option" that I presume I set at 768 when I installed it a couple years ago. With a conventional chip it should be 255. I'll look at that in the morning. Thanks.

 

[TurboDave]

Yes, on the F3 page you have to select the MAF display option according to the chip you're running.

The selections are:
255 grams per second (standard) "for standard non extender chips"
512 grams per second (extender chips) "for extender chips"
768 grams per second (extender extreme, pro, extreme G chips)

You make the selection according to the chip you're running.

 

[Dean]

That did it, thanks, and thanks for the chip help as well. Car runs quite well.