Advice Please

[Global-i]

Hi,

I am just starting to try and get my head round the tuning process.
Attached is my current tune (Professionally Done) and a log, I would really appreciate some advice if and how it could be improved.

TIA
Martin

[WeathermanShawn]

Welcome to the Forum..

I take it this is a Custom OS?

Tell us more about your Vehicle and any mods..

Looks like a decent tune. Your SHRTFT's are indicating positive, so it could probably use some calibrating on the Trims.

I think your fuel injectors may be maxing out..

Are you still utlizing MAF? I don't see a DTC Code, but it looks like there is an attempt to disable it...

Tell us more. I am not the expert on Custom Tunes..just a quick look from the U.S. LS1 community..

[Global-i]

Thanks for looking, brief details are as follows
Monaro CV8 M6
No MAF SD tune
5.7 LS1
Forged rods and pistons
Stock heads
212/212 Cam
Harrop 112 Intercooled supercharger @ 12 Psi
Stainless steel exhast manifolds (make unknown)


The main reason I ask is I lost approximately 30HP over the MAF tune on the same DYNO (On Different days) My 1/4 trap times are about 5 Mph down also. I was hoping to at least equal the MAF tune HP if not exceed it.

[joecar]

Global,

If you don't get a MAF DTC then it will still run from the MAF... set P0101,2,3 in C6001 to 1-Trip.

[joecar]

Comments:

The 105kPa columns in tables B0101 and A0009 should be identical.

In B3647 in the high MAP columns under 2400 rpm, is that sufficient fuel...?
For example, what happens if you're dawdling along at 1200 rpm and you go WOT...?

B4001 has been adjusted, it doesn't reflect the injector's ability.

Set the shift time tables to 0.2 seconds.

Tables E1101,2 are set too low, this will use the Hot tables everywhere in the trans calibration.

Post your dyno charts and 1/4 mile ET/TS.

My $0.02

[Global-i]

Thanks for the comments joecar.

What exactly does this mean (B4001 has been adjusted, it doesn't reflect the injector's ability.)
I have looked at the flow rate shown in the tune and according to my sheet that would equal about 30# injectors. However I am lead to believe that the they are actually 48# injectors fitted would this explain your comment?

Dyno sheet and Time slip attached as requested.

Updated
I have just got off my lazy ass and actualy had a look at the injectors and they are Bosch 36# 0280155868 items

For example, what happens if you're dawdling along at 1200 rpm and you go WOT...?

There is a slight cough and then it accelerates as expected.

[joecar]

Thanks for the comments joecar.

Martin, welcome to the forum...

What exactly does this mean (B4001 has been adjusted, it doesn't reflect the injector's ability.)

Look at the attached pic... the hump in the IFR is an "adjustment" to manipulate the IFR for some particular situation... but this causes the AFR to be off in other situations.

Updated
I have just got off my lazy ass and actualy had a look at the injectors and they are Bosch 36# 0280155868 items.
...

Measure your rail pressure... then recalculate the IFR table using this spreadsheet (see EFILive tab):
http://www.marcintology.com/tuning/injectors.xls

See attached, this is what I calculated for 36 lb/hr injectors.

Do you have the returnless fuel system, or do you have a manifold referenced FPR...?
(if you have a manifold referenced FPR then the IFR table will flat)

[joecar]

Do you have a wideband...?
Do you have FlashScan V1 or V2...?

You may want to have read thru the AutoVE tutorial.

Also note: in the COS, any cell in B3647 that is stoich (i.e. same as B3601, i.e. Lambda = EQR = 1.00) will cause the PCM to trim using STFT when hitting those cells... to prevent trimming during AutoVE procedure you have to set those cells to values that differ from stoich.

Look at these summary notes (scroll down to September 24th, 2009): http://forum.efilive.com/member.php?u=10

[Global-i]

Do you have a wideband...?
Do you have FlashScan V1 or V2...?

Yes I am waiting for the null modem cable to connect it up via the Serial connection. (Innovate LC-1)
Yes Flashscan V2

Do you have the returnless fuel system, or do you have a manifold referenced FPR...?
(if you have a manifold referenced FPR then the IFR table will flat)

The fuel system is whatever is standard on a 2004 CV8 Monaro.

You may want to have read thru the AutoVE tutorial.
Also note: in the COS, any cell in B3647 that is stoich (i.e. same as B3601, i.e. Lambda = EQR = 1.00) will cause the PCM to trim using STFT when hitting those cells... to prevent trimming during AutoVE procedure you have to set those cells to values that differ from stoich.

I will read it ASAP, but whether I understand it is another issue.


Should I change these values ASAP?
If you don't get a MAF DTC then it will still run from the MAF... set P0101,2,3 in C6001 to 1-Trip.
The 105kPa columns in tables B0101 and A0009 should be identical.
Set the shift time tables to 0.2 seconds. And Tables E1101,2 are set too low, this will use the Hot tables everywhere in the trans calibration. Even though it’s a manual.


I will get the fuel pressure reading and recalculate the IFR table.
I have access to some 60# injectors is it worth replacing the 36# one?
Thank you for your help so far.

[5.7ute]

Do you have a copy of the maf tune you could post, or even better a log with the maf tune so we can compare airflow's & timing?
Wot AFR's are completely different between the two tunes, as well as significant knock in the log file.
It wouldnt hurt to fit a wideband & log a few runs also.