$85 7060 "Choke AFR Enrichment at startup"

[EagleMark]

You know all Axxx.bin were superceeded to Bxxx.bin? AWAW is now BAMT.

I don't know this mask well enough, I've only had a couple of these trucks hands on one day each, but when I do this I'm emulating so changes can be quick, I'd lean out one table for now
"Open Loop Air Fuel Ratio Vs. Coolant Temp."

When warm your probably Closed Loop and getting fueling correction is why it's better.

What's the cam specs @.050 ? What is MAP when this is happening? I see you had Idle up a bit, depending on cam it may need a lot less VE at idle and some more spark.

[1BadAction]

You know all Axxx.bin were superceeded to Bxxx.bin? AWAW is now BAMT.

I don't know this mask well enough, I've only had a couple of these trucks hands on one day each, but when I do this I'm emulating so changes can be quick, I'd lean out one table for now
"Open Loop Air Fuel Ratio Vs. Coolant Temp."

When warm your probably Closed Loop and getting fueling correction is why it's better.

What's the cam specs @.050 ? What is MAP when this is happening? I see you had Idle up a bit, depending on cam it may need a lot less VE at idle and some more spark.

OK, I'll use the BAMT. Had no idea the original was superceeded, thanks for letting me know I'd rather work from the latest. My truck has AWAW in it stock, so it's what I went with. I will be Emulating/RTT also with the APU1 and associated hardware. In the tune I bumped up the idle timing areas 4 degrees and smoothed them into the stock table, along with the increased idle. I think this thing will end up idling nicely at stock RPM but I'll work my way down...

Here is the cam card from comp cams. It's pretty mild.

[1BadAction]

Kpa was 60 if I recall correctly but I was just looking at it through a solus scan tool, I didn't have my computer or software to log anything. First fire was with the chip dead stock just to get a feel for it before I came back home. Friday and this weekend I'll have my logging/tuning equipment so I will know more for sure then.

[EagleMark]

60 MAP is a horrible idle. But it looks like you did get an extra 4 degrees timing in that area and through smoothing the VE got a little less fuel... but idle does look stock, add 100-150 RPM till you get to work on tune, this will bring MAP way down in VE table to way less fuel. Should be able to get that cam to idle nice at 800 with some work.

Base timing in this mask is 3.87 at distributor.

[chevmasta]

I've recently tuned my virtually stock 454....way better than before with this 7060 $85

I can actually do a burnout with my 33" tall tires! Never before could it even think of doing a burnout on the stock bin.

attached is my current bin on a stock truck other than jba headers and 16psi of fuel pressure. You can see what I've changed vs my stock banc.bin
mine has a 4l80e transmission

[chevmasta]

I had way better luck removing VE from the high map 400rpm tables than I did with the choke afr enrichment at startup table.

I chased a small puff of black smoke (probably due to the increase in fuel pressure) for awhile. Reducing the VE table caused it to go away.

Your truck should have some really good torque with that cam and compression ratio!

I'm excited to see someone else using this PCM

[1BadAction]

Thank you Mark, I was surprised to see the timing at 3.87 degrees base instead of the normal zero, but that jives perfectly with the timing procedure in the alldata manual, which is what we used. Tons of new info to chew on here, should be a productive few days of tuning.

I had way better luck removing VE from the high map 400rpm tables than I did with the choke afr enrichment at startup table.

I chased a small puff of black smoke (probably due to the increase in fuel pressure) for awhile. Reducing the VE table caused it to go away.

Your truck should have some really good torque with that cam and compression ratio!

I'm excited to see someone else using this PCM

Thanks for the bins! I'll take a look and compare them to my current BAMT, it should help me pinpoint what needs to be changed a bit faster. Sounds like you have a similar ride. My burb also has the 80E, which will be something else to tune but I already have a lot of experience in that aspect. I'm mainly aiming to get it drivable this weekend so I can bring it home, then I can really spend some time with it.

Tq is what I was aiming for, even as it sits it feels very powerful off-idle. 3.73 rear doesn't hurt any in that respect either. I'll be sure to keep every one posted

[EagleMark]

It's an excellent PCM and came in some very cool trucks. Problem is just a couple years... and most of those trucks survived or were used commercially, wore out and died, so not a lot of conversions. I've been seeing more of them pop up recently for tuning help. In the 4x4 the trans and transfer case is a sought after unit.

[chevmasta]

You know all Axxx.bin were superceeded to Bxxx.bin? AWAW is now BAMT.

Mark,
noOB question...
How do you know which bin supersedes to another? I've seen you post this to several people with various bins....

Is it just a matter of the BCC find? How do you correlate each of these superseded bins together?




Back on topic...
Today my truck didn't like itself on hot startup....twice. IDK why.....I can tell it was running rich again on startup. But it does it randomly. I think I still need to remove some more fuel from the VE table on startup.....and/or maybe I have an injector leaking down? Might be a hard one to chase down.

[EagleMark]

I have a few SnapOn books that I double check TunerCat CalData program for bins.

Cold start is a tough one, only get one chance a day to test. Mechanical issues just can't be tuned out without messing something else up. One thing that does affect TBI cold start is throttle blades not open enough. After a drive watch your data, always do idle data at end of log. What are IAC counts? If under 20 your good. If higher it may be cold start and other issues. As TBI wears the blades close. Fuel does not mix with air as well and all air is coming through IAC.

[1BadAction]

Mark, can you tell me if a 7060 ECM with a BDPK EEPROM will be ok to use instead of my AWAW? It is from a 4L80e truck and I'll be using my BAMT bin. Thx.

[EagleMark]

That's a 5.7L Memcal. Not sure how the knock filter will react, there's been lots of discussion but I never saw a clear cut answer. I don't mix stuff like that...

[1BadAction]

That's a 5.7L Memcal. Not sure how the knock filter will react, there's been lots of discussion but I never saw a clear cut answer. I don't mix stuff like that...

Good enough reason for me Mark, thanks. I'll see if I can find an AWAW for a reasonable price.

[EagleMark]

Since your doing the chip part I would use any Memcal for the 7.4L, the knock filter in it will match the knock sensor in motor which matches the engine size.

Three parts of a Memcal, chip, Netres and Knock filter. Netres is easy and the 5.7L would work, CHip you've got covered. Now knock filter?

Someone will correct me if I'm wrong but I don't think we ever came up with clear cut answers on Memcal Knock filters, we do have a list of many. I just don't play games there as it may or may not detect knock properly.