G20 Van with RV Cam no power on acceleration, where to start?

[WASyL]

yes, current set at 5 degrees advance.

Yes for connected or disconnected? Did you changed this in tune also to match?

[dave w]

What are the Air Fuel Ratios from the data log?

dave w

Near Idle.jpg

Off Idle.jpg

[Raymo86]

What are the Air Fuel Ratios from the data log?

dave w

Near Idle.jpg

Off Idle.jpg

Dave, I am not sure. I don't currently have Wide band sensor, can I do it without? if not needed, I will do it this afternoon, when I get access to my laptop at home. Thank you for Looking at it!!

[PlayingWithTBI]

I bought a kit from RV Morse Machine, unfortunately he passed away in August, but you s/b able to find one elsewhere. You have to bend down the MAP vacuum tube a little to make it work. The installed pic was when I had a 28LB spring running at 28 PSI

Edit: I think I had ~$130 all in on this setup.

[Raymo86]

I bought a kit from RV Morse Machine, unfortunately he passed away in August, but you s/b able to find one elsewhere. You have to bend down the MAP vacuum tube a little to make it work. The installed pic was when I had a 28LB spring running at 28 PSI

Edit: I think I had ~$130 all in on this setup.

Looks great.. I really like your setup. I purchase a Fuel pressure Adapter I plan on install when I take off the TBI. I thought I would just leave in place. I like adding the gauge like you did however, might go that route as well.

[dave w]

Dave, I am not sure. I don't currently have Wide band sensor, can I do it without? if not needed, I will do it this afternoon, when I get access to my laptop at home. Thank you for Looking at it!!

Wide Band (AFR) tuning is Optional. Knowing the AFR's for Choke, Warm Up, Acceleration Enrichment, and Power Enrichment is very useful data.

I consider Wide Band tuning more accurate than BLM' tuning.

I posted Wide Band tuning information here: Wide Band O2 (WBO2 Tuning) Spreadsheet (gearhead-efi.com)

dave w

[Raymo86]

Wide Band (AFR) tuning is Optional. Knowing the AFR's for Choke, Warm Up, Acceleration Enrichment, and Power Enrichment is very useful data.

I consider Wide Band tuning more accurate than BLM' tuning.

I posted Wide Band tuning information here: Wide Band O2 (WBO2 Tuning) Spreadsheet (gearhead-efi.com)

dave w

Thank Dave. I have downloaded the zip and will study it this week!! I have a Moates AutoProm, is there a O2 Sensor that you recommend using?

[dave w]

Thank Dave. I have downloaded the zip and will study it this week!! I have a Moates AutoProm, is there a O2 Sensor that you recommend using?

I recommend the AEM 30-4110: https://www.aemelectronics.com/produ...uego-afr-gauge

The "WBO2 HACK" for the 16197427 Does Not require the Moates.net AutoProm.

dave w

[Raymo86]

I recommend the AEM 30-4110: https://www.aemelectronics.com/produ...uego-afr-gauge

The "WBO2 HACK" for the 16197427 Does Not require the Moates.net AutoProm.

dave w

Thanks Dave! I have read through the documents and have my wire installed in the ECM for the data logging and updated the BIN by changing the EGR as described. Waiting on the Sensor\gauges to arrive. I plan on leaving the original 3 wire O2 sensor connected, as that is what runs the spark advance, unless there is a reason to remove it.

[Raymo86]

Yes for connected or disconnected? Did you changed this in tune also to match?

My bad. Yes, I disconnected the brown set timing wire (lot easier in the Van then in my 89 pickup) and I did change the tune to match 5 Degrees advanced as well. We are going to get Snow tonight, so not sure I will get the Gvan on the road anytime soon to data log again. I did purchase a new fuel pump like suggested by PlayingWithTBI, and plan to adjust the fuel pressure by following these direction, found link on this site!!. https://www.thirdgen.org/tbi-afpr/ My plan is set it at 14/15 PSI, which should be good for the stock TBI heads the cam, or so I have read..