Config Help.....

[rob@vems.co.uk]

when you run the program, do you right-click on the icon and select Run As Administrator ?

[Tony C]

no mate,
that the problem?

[Tony C]

just plugged the ecu into laptop now that the pc has upgraded it.
and its saying at bottom of laptop screen FW version 1.1.74 config version 1.1.69

so thats worked,
just need to transfere my msq from old firmware to this one :-(
and sort the flippin tables out :-(

[Tony C]

just been sat here going over it screen by screen,
now got a thumping headache,
anyone fancy taking a quick peep to see how it looks?
see if theres something wrong anywhere etc???

things like:
in primary trigger settings:
first trigger tooth should that be 1 or 2??

Ignition Settings:
other:
Ign adjust - cold (0 deg C) what should this be? 0 Deg??
Ignition retard Clamp 0 deg?
Coil charge time map scale ??

Accel enrichments:
Fuel film calc factor mines 52 should i set it to 0?
Enlean downscale mines 26% set it to 0??

[mattias]

You should use the  config in my signature to replace the settings you don't trust.  Just drag'n'drop my .vemscfg over the dialogs where you don't trust the default settings.
I know for a fact that the default firmware files that are used to fill in the new settings have contained crap, for one the warmup enrichment table has been screwed up.

[Tony C]

here is the config from VT (i hope)
firmware version 1.1.74
If someone wants to check what i have done,
wont be attemting to start the car until after work tomorrow.

http://www.v8forum.co.uk/ecu/VTfiles.zip

[Sprocket]

Here are just a few things I think could do with some revision. There may be reasons why they are set as such, that I am unaware of, but in my opinion could do with some alteration

Should advanced filtering in primary trigger settings be enabled? a standard 36-1 I would think not.

ignition dwell settings, coil charge time of 4.99? obviously I do not know what coils you are using but it feels a little high. Also, there is no voltage compensation (perhaps intentionaly due to the high charge time?). Voltage compensation would be a value of 1 in the coil charge time MAP scale. If its a value you have used and it works for you, thats fine. I know large amounts of nitrous and extreme rich mixtures that go with it, need a fat spark.

The difference between soft ignition cut and fuel cut is not great, no time for soft cut to fuction correctly before fuel cut, and soft cut range not great either? perhaps soft ignition start at 6000rpm control range of 200rpm with fuel cut at 6200rpm. an accelerating engine will over shoot 6000rpm quickly and go straight to fuel cut. soft cut warns you you are close to red line, while fuel cut actualy tells you you are at red line. However, I am not so sure any sort of fuel/ ignition cut is wise with Nitrous as ignition cut could give nitrous backfire and fuel cut could give a lean mix?

Ignition idle control, max advance and max retard, both could easily go to 5 degrees and threshold for IAC would then be better with 4. PID settings need to be tuned to give a steady idle though, maybe why the setteings are so tight?

[Tony C]

wooooooooooo hooooooooooooooo
she is a running on 1.1.74 :-D

a bit rough though,
wont idle when cold, have to hold it on the pedal,
and when you rev it up feels like its missing then clears and revs again.
not sure if the stepper is working to be honest, worked ok on 1.1.44

i have a datalog here for cold start up to temp,
and then a hot start log.
if someone who knows what they are looking at could take a peep for me that would be great guys,

[Tony C]

this should be it:
http://www.v8forum.co.uk/ecu/datalogv8.zip

i think the hot start one went weird as i have two for about the same time frame.

[Sprocket]

Looks like the engine needs more air or more advance to get the idle speed up. If you suspect the idle air valve is not functioning, you are probibly right. It might be as simple as the polarity being reversed. You should be able to see if the valve is moving the correct direction, by connecting a spare, or removing the original and watching it as you key off and then on again.

[Seight-v8]

tony,

Somethings screwing with your EGO correcection also, its going from 80 -105%, everytime you press the accelator, maybe too much acceleration enrichment.

i am no expert just an observation, maybe someone else can comment.

Use convert vemslog to csv in the menu, then use megalog viewer to view your logs, makes much more sense when i see it there than in vemstune.

hope this helps

scott

[Tony C]

well got the car running a bit better, still not idling correctly, but so we can go rqacing in the morning have reverted back to 1.1.44 for now,
ONE thing we noticed though, when i fired the car up on 1.1.44 it ran well sweet, then noticed forgot to plug the vac pipe in to the ecu, did that and would not idle kept stalling, similar to the probs on 1.1.74 but 1000% worse.

went through the settings again and the only thing different was i turned map load mulitplication on as a few of the tuners that have checked various datalogs and configs of mine have all said why is this turned off,
well turned it off again car idled and reved up crisp again, whats causing this? and could this be a possible problem on 1.1.74???
at least i have the config saved for the 1.1.74 so the only annoying part is having to plug into the pc to upadate it again at a later date.

[rob@vems.co.uk]

Switching map multiplication on will change the way the whole map is read.  If it was tuned without MAP multiplication then leave it off for tomorrow, and worry about the MAP multiplication tuning later.

[Tony C]

cheers Rob,

Quick update from the weekend,
car ran faultless all the way to pod and home (FW 1.1.44)
even burnt off a couple of cossies on the way ;-)
at pod did the normal burn out,
staged at the line, lights went green and nailed it, it launched like she has never launched before off the line, straight and hard, the whole car creaked, hit shift point, cogged it into second, loud bang from under car and it all started shaking like mad,
backed off mid track and cruised through top end with a 14.8 sec pass. which was good as the last part we were cruising :-)
when we got the car back to the pits we noticed the suspenssion mounts had sheared off the axle, the diff nose had rammed its self into the trans tunnel leaving a huge dent, and bent the axle locator bars, im pleased to say we now have shite loads of torque coming from the V8. and she hooks up spot on with no wheel spin.
checked timing ticket, best 60ft time we recorded was 2yrs ago with the 3.9 v8 and 150shot of gas which gave us a 1.8sec 60ft.
Sunday with the new 4.6 and with no gas we recorded a 1.9sec 60ft
i know its off topic but goes to show the 1.1.44 FW does work :-)

[rob@vems.co.uk]

Maybe its the firmware, or maybe your tuning is getting better.