tscompusa2

iTrader: (22)

if its the same rom yes.

widge

Yeh it is the same ROM, ive just noticed that there scalled differently though, my current ones are in MCSEC and the ones from my ALT Map tables are in MS

So i guess i cant just drop them straight over.

So what do the DESIRED ISCV initial step positions do then? Thats what i was playing with to get my car to idle with AC On,

either way reducing the IPW table and keep testing should see some results

widge

I just re-read the thread, so i adjusted the BISS outward so that means it allowed more air so i need to add fuel for the more air on crank, this weekend ill start playing with it and add 10 points to the whole table cause my cold start is fine but it idles around 1000rpm before i adjusted the BISS cold start would be around 1500 then slowly falling to target idle when warmed.

Thanks heaps i believe you have most likely solved my issue

l2r99gst

iTrader: (2)

Those two tables that you posted are different tables. Don't copy the values from one to the other.

I can give you the XML for all of the tables a bit later if you want to wait, or search the forum. But, the values that you posted are from two different tables. The table you may have to adjust is the first one (and/or the alt map version). In general though, you should adjust all IPW tables that aren't automatically scaled when installing bigger injectors. All of this info is in mrfred's thread, from what I remember.

But what I would really do is make sure that the BISS is set right...log your ISCsteps at idle. Then, at your troubled hot start, try strating the car with the gas pedal despressed any and see if the hot start improves or not. If so, then you need to lower your IPW tables at those coolant temps. If not, then you need to raise your IPW tables at those coolant temps.

Of course, as I mentioned before, this is assuming that you ISCsteps are already adjusted back to it's learned positions after your BISS change. You may have to wait a few days or reset your battery.

widge

Oh its been over a month maybe even 2 since i adjusted the BISS and the battery has been removed.

I have realized the 2 tables where different, i believe the one i need to change is attached correct?.

The car starts fine hot if i have the accelerator pressed, if i dont it starts but stumbles and struggles to get its rev's to idle but eventually does

l2r99gst

iTrader: (2)

No, that's not the table you want. You want the other one.

From your explanation, you need to lower the IPW in the other table at the higher coolant temps (the temps where you are having the hot start problem).

And actually, as mentioned, you 'should' adjust the other IPW tables to scale down based on the size of your new injectors. But, you may have tuned around that, so start with this one table for now.

widge

Im confused lol i still have stock injectors, thats the only IPW table i have in my rom

l2r99gst

iTrader: (2)

OK, I was assuming you were modded with bigger injectors. OK, let's get a few details out of the way first.

1. What fuel are you using?
2. Are you on alt maps? Is your issue on main and alt maps and/or with one certain fuel?

Let me try to link you to a post or two about what you need to adjust and the XML defs. That way I don't have to dig out my laptop.

l2r99gst

iTrader: (2)

OK, here is the page from the advanced fuel control thread with the 9653 tables.

widge

I dont use Alt Maps, im on 98RON fuel in AUS

Im using tephra mods map and it has the alternate cranking enrichment IPW Table but i dont use Alt maps and i dont have that table in my XML for normal maps if thats what your saying

widge

Ok ive added those tables into my XML now,

So the screen shot below is the one i need to change

And im lowering the numbers in my trouble area?

l2r99gst

iTrader: (2)

Yes, that looks right now.

And yes, if holding your gas pedal fixes the issue, then yes, lower the values in that table in the coolant temp range where you are having your problem until you don't have to hold the gas pedal anymore.

widge

Awesome mate u have been a great help much appreciated.

I seen those xml values while searching but wasnt sure if i should add them, while i have your attention, can i pick your brain in regards to stalling.

Basically if i take off in first and go to accelerate and then clutch in say in traffic or something 8/10 the car will stall, any ideas?

l2r99gst

iTrader: (2)

As long as there are no mechanical issues, you can fix that with ISCV tables and/or some of the tables that you just added via those XML entries.

Why did you adjust your BISS in the first place anyway?

widge

I adjusted the biss to bring the idle up to around 1050, the car has never hit the target Idle RPM's i set in Ecuflash.

I dont have any stalling issues with AC/On in the car and the only thing i did to fix that was raise the ISCV tables with AC so i guess ill add 10 or so steps to those tables and see how that goes

I think i need to rescale my MAF also, that was my plan this weekend while i was sorting my other little issues out, i believe that can help catching idle too