tbss ls7 maf tuning help

[05chevy]

06 tbss. 4" intake with ls7 Maf. Need help tuning it. Also need help with electric fans. Will pay someone for there time. Thank you

[joecar]

You want to correct the MAF table for the LS7 MAF and 4" plumbing...?

Do you have a wideband (if so, which one)...?

Can you correct the MAF table using the Calc.VET (only use the MAFcorrection portion) or AutoMAF procedures...?

[05chevy]

Yes correct the maf table.

Do not have wide band yet
Have not tried calc.vet

[joecar]

Ok, without wideband you can only correct a very limited range of the MAF table(s) using LTFT's...

you would log LONGFT1/2 and FUELSYSA/B;
you would create a transient filter (to exclude throttle transitions) which also excludes non Closed Loop;
you would create a map of LONGFT1 or 2 or average to match your MAF table, apply the transient filter, and apply the map to the MAF table;
since you have no wideband you would have to eyeball extrapolate the MAF curve to the higher frequencies...
You REALLY do need a wideband for correcting your MAF table(s).

Post a log of MAFFREQ2, MAF, LONGFT1/2, FUELSYSA/B, ETCTP, RPM, ECT, IAT, MAP...
Post your tune file.

[joecar]

Which PCM/ECM do you have...?

[05chevy]

18771
18772
here is the stock files

[Taz]

Patched your E-Fans ...

PWM break points:


40% - Fan1 OFF
44% - Fan 1 ON
85% - Fan 2 OFF
90% - Fan 2 ON


... need help with electric fans. Will pay someone for there time ...

A modest donation to any recognized charity would help someone else.

[joecar]

Taz, thanks.

[joecar]

18771
18772
here is the stock filesAlso post a log file showing LTFT's.

[05chevy]

18778
here is a log with the intake. idle to 3000rpm. I pasted the MAF low and high frequency conversion tables from a 08 LS7 and it will idle. but still hiccups every now and then. i also have a IAT sensor break out harness on this infront of the MAF. thanks

[joecar]

Sorry, I forgot to say previously, I also need MAFFREQ or MAFFREQ2 in the log.

[05chevy]

Sorry, I forgot to say previously, I also need MAFFREQ or MAFFREQ2 in the log.
I'll have to get another log tonight

[05chevy]

18785
18786
Here is the tune i flashed to get it running.
Here is the log with MAFRQ

[joecar]

18785
18786
Here is the tune i flashed to get it running.
Here is the log with MAFRQOk, thanks, I'll look at these when I get home tonite... ping this thread again to remind me (I have about 8 tunes in my queue).

[05chevy]

Ok thanks

[joecar]

I mean ping it again in about 2 hours if you can, thanks :cheers:

[05chevy]

I mean ping it again in about 2 hours if you can, thanks :cheers:
Bump

[joecar]

Why is your ECT so cold...?

[05chevy]

That's my fualt. Didn't get the car to operating temp.

[joecar]

I'm working on your MAF table, but please do get another log.

[05chevy]

18803
Here is a log at O.T. I also took it for a drive on this log. 1-2 shift is HARSH. Sorry it took so long. I have been really busy. Thanks

[joecar]

18803
Here is a log at O.T. I also took it for a drive on this log. 1-2 shift is HARSH. Sorry it took so long. I have been really busy. ThanksIt this the tune file the log was taken from: TBSS stock ECM tune ls7 maf.ctz (https://forum.efilive.com/attachment.php?attachmentid=18785&d=1441058950)

[joecar]

18803
Here is a log at O.T. I also took it for a drive on this log. 1-2 shift is HARSH. Sorry it took so long. I have been really busy. ThanksI really need MAFFREQ2 to be included in the log


( on the PIDs tab, when you select this pid, save the pid selection (click the Save Pid Selection button) ).

[05chevy]

It this the tune file the log was taken from: TBSS stock ECM tune ls7 maf.ctz (https://forum.efilive.com/attachment.php?attachmentid=18785&d=1441058950)
Yea and I thought I had it in there. If you have a pid that has the MAFFREQ2 in it please send it to me. Because the log pids I have I can not find it. Thanks

I really need MAFFREQ2 to be included in the log.


It this the tune file the log was taken from: TBSS stock ECM tune ls7 maf.ctz (https://forum.efilive.com/attachment.php?attachmentid=18785&d=1441058950)

[joecar]

Ok, here is the pid list to use, copy to Documents\EFILive\V7.5\PIDs.


Also, try flash the attached .ctz and take a new log from this.

[05chevy]

Ok will do first thing in the morning. Thank you

[joecar]

Also, something wrong with your LC1 in the log...

update your V7/V8 software (and V2 firmware) from here: Aug-27-2015-EFILive-Public-Pre-Release (https://forum.efilive.com/showthread.php?25899-Aug-27-2015-EFILive-Public-Pre-Release)