Ford vs Chevy Build-up

[Dave Noll]

Just for reference, the BARO reading in this area (elevation 1050) is about 157Hz. Different area's will vary, higher elevation, lower Hz.

Earlier I wasn't really suggesting locking out the O2 sensors. I just wanted to know if that particular unit had the capability. @ full throttle the stock ECU ignores input from the O2's, uses pre-programmed values until throttle goes under about 80%.

[Tony Corley]

Car looks good Rich. It has been a great build to watch, you should be proud.
David, the Anderson Ford PMS he is running is a piggyback system that will allow the factory ecm to do as much or as little as you want. If I remember correctly, it can go into full standalone mode over 2000 rpm, if you want it too. They are a good, simple system to use.

[HandOverFist]

Yes, I have standalone activated @ 10 percent TPS and 2500rpm for the fuel and timing tables. I have taken 10 percent fuel away @ idle and zeroed the values @ WOT due to the 24 pound injectors pending wideband readings on the track. The Acell table was a stab in the dark, but my initial programming seems close by yesterday's stabs on the concrete pad.

I did not dabble at all in any of the part throttle settings. My only concern atm is will the engine start easily, idle cleanly and be sufficiently lean at WOT. Btw, I changed out those Southside lift bars for straight lowers for the time being...figured the less I had to deal with getting it down the track to begin with the better. I did put the swaybar back on...will see after the first outing if an airbag in the RR will be needed.

[fordteacherguy]

Originally Posted by HandOverFist

Yes, I have standalone activated @ 10 percent TPS and 2500rpm for the fuel and timing tables. I have taken 10 percent fuel away @ idle and zeroed the values @ WOT due to the 24 pound injectors pending wideband readings on the track. The Acell table was a stab in the dark, but my initial programming seems close by yesterday's stabs on the concrete pad.

I did not dabble at all in any of the part throttle settings. My only concern atm is will the engine start easily, idle cleanly and be sufficiently lean at WOT. Btw, I changed out those Southside lift bars for straight lowers for the time being...figured the less I had to deal with getting it down the track to begin with the better. I did put the swaybar back on...will see after the first outing if an airbag in the RR will be needed.

Rich,

Looks like you are getting in the ballpark..thats the toughest hurdle to get over. Keep the digital factory baro..the analog GM MAP will not work without programming and a harness and it has no advantage to your Baro sensor. If you wish to see if your baro is responding on your controller, take a reading with the key on engine off and apply some vacuum to the baro port with a hand pump and see if the baro changes on your scanner. If it changes ...I guess its working and responding...the HZ check on the sensing wire will tell for sure.

Good luck on the shakedowns...I'd shoot for about a 13:1 A/F to run well, my ET falls off a bunch below 12.8.

Good Luck!

[HandOverFist]

Thanks Brian - I need to weld another bung in the collector for the wideband before Saturday for sure. If I understand this PMS correctly when in standalone mode it will try to maintain a 12.8 A/F ratio. I may in the end need to take it out of standalone and manually input data to get it leaner at WOT.

You were correct about the timing advancing wildly under light load...I have seen up to 42 degrees winging the engine at the shop in the controller screen. It would probably be money well spent to invest in some type of recorder to review all parameters with known settings after a blast down the track. Considering this... http://www.andersonfordmotorsport.co...icro-flashacq/

[HandOverFist]

Loaded for the early morning alignment appointment. Those low profile ramps were the best solution I could come up with to be able to open the door over the trailer fender with this low slung pig. The next time I load I will try elevating just the fronts or rears to see if it clears. I did manage to get the O2 bung installed while on the trailer for the wideband sensor. Initial outing will be with those Goodrich TA radial DOT tires on it...18psi sound about right with a light burnout? If the car shows potential I will order some M/T 26" drag radials.

[Rory McNeil]

Those ramps look interesting. How tall are they, and where did you buy them?