RomRaider

I get your point about the fact that it's not paramount but still, I have read to much stuff about detonation on the one hand, and blew an M52TUB25 (with stock limiter that is ) on the other hand, to not try and safen up the table, especially given that my CL management is disabled. About power dropping before 6500rpm anyway, you're right, and I don't intend to go past 6500 rpm often at all. It's just to be able to use a wider rpm range once in a while, and maybe as well because I feel that with the M54B30 intake manifold there is still some potential to be unlocked with later tuning.

About the formula you mentioned, I'd be very interested in you sharing it if you find it and will look for it myself, but according to some very experienced tuners (and authors) a WB is a must to be able to properly tune at WOT anyway

Im guessing you pulled the head and pistons from the 2.5 after it gave up the ghost? What did they look like? And were you also running that one with all four o2’s disabled? Just curious.

I have to much on my list to figure out the “formula” at the moment lol. You would probably be better off trying to reverse calculate (maybe wrong way to put it) the stock fuel table.

A wideband is almost a must for even part load fuel / ignition editing. I would have one already if it weren’t for us saving for a house with a garage. Apartment living is the pits ya know? Lol.

This is the thread I was reading on calculating IPW.
https://www.team-integra.net/forum/14-p ... pics/46738

duty cycle = time injector are opened divided by cycle time. dc(%)=ipw(ms)/(120000/rpm)

I didn't try to open it because it had a ticking noise to begin with (before it blew up) and when we removed it from the car we found out that it had already been opened, probably for overheating issues since when I got the car it had a new radiator on and that didn't match the way the car had been taken care of overall lol. So I figured I'd rather swap it for a m52tub28... but the poor thing took some beating (never on cold engine and never for too long periods of time though) for 4 years before giving up
When swapping intake manifolds and oil pans over (I already had the M54 manifold on and my B28 came from a 5 series...) we found pieces of shattered metal on both ends of the motor

I get you about the house, I have to go to my parents' on the weekends to be able to work on the car for the same reason

Thanks for the link!

Volumetric efficiency is not used in MAF application.
Its only used in Alpha N / speed density type of rom. (only the default table when maf is unpluged uses it)

Another dumb question I guess: I'm trying to save the ROM with the attached table after renaming it, and it seems to be saved, only when I open it up the fuel table that comes up is the stock one, so in fact it doesn't save anything. Would that be because the values in the red cells are "rejected" by RR?

"Saved changes made on debugg mode" is checked, and I tried changing the user level to 3, to no avail...

Thank you for that clarification! Learn something new all the time.

I still can't get this fuel table to save itself and I'm running out of ideas...here is all I have tried so far:

- user level: debug mode
- "save changes made on tables in debug mode": checked
- set rev limiters for soft/hard (AT/MT) to 7008 or 6944 (the same value as in fuel table) in case they're conflicting. This one actually works and saves itself, with both values
- modifiy only the very last cell in the rpm axis (to 6944) without editing any other value in the table, just for the sake of verifying that there is no conflict in the values I had previously entered, and do the same for all fuel tables where the stock "6496" value was present, under "fuel" and "full load recognition" folders to avoid any conflict.

Nothing: each time I save/close/reopen RR, the other values (rev limiters for e.g.) have been saved, but not the fuel tables... I believe I have been thorough enough, but to no avail.

Any ideas guys?

P.S.: I have even tried 6752, which is really just 6496+256 (a recognized "rpm step", since it's the one used between some other rows, such as between 1760 and 2016 for e.g.)

You need to edit the separate RPM and load axis tables to make the changes.

But I have no idea what you are trying to achieve by editing the rpm axis. Ms42 doesn't extrapolate, but it keeps the last value in use after the 6496 rpm. And because the IPW is virtually identical across the RPM range, it works just fine even if you rev it up to 8k. Same for ignition. There is not really need for different ignition advance when you go from 6500 to 7000rpm, so it's fine that ms42 uses the values from highest rpm row.

Thanks for your reply. It worked and even updated all the fuel tables' rpm axis automatically
According to Lambda 1 and other members the rpm axis needs to be rescaled in order for the DME to be able to "read" IPW values for that different (higher) last rpm row, if I understand well what he meant by "rescaling".

Instead of just changing the last row from 6496 to 6944 (or 7008 for e.g.) and ending up with a 1000rpm "gap" in the table between the last row and the one before it, and given that my car is permanently on open loop, I thought I'd edit other values in the rpm axis (and corresponding IPW rows) to try and make things a bit more accurate and "smooth". Maybe it's not necessary at all, but could it be harmful in any way ??

P.S.: I haven't touched the load axis, and since I wouldn't know what logic to follow (without logging) anyway, I didn't touch the ignition advance values either.

So I have performed my first "post modifications" (calling it "tuning" would be far fetched at this point) flash last weekend, which are included in the following "change log":

- Configurations:
*Disabled SAP
*Disabled exhaust flap

- Disabled DISA @ 5940rpm (and yes, the power loss above 6000 is now gone! )

- Updated Fuel/ignition timing axis + fuel tables (base+warm banks 1&2) , with new rpm values and IPW values. Basically what I did is that instead of just raising the last "rpm tier" from 6496 to 7008, and to avoid ending up with a 1000rpm gap up top, I edited all the "rpm tiers" values above 1504rpm (didn't want to mess with the stock values around idle) to keep a table that is somewhat proportional to the stock one. When I say "new IPW values", what I mean is that I just copied and pasted the stock values that are closest to the new ones, whenever applicable. For e.g., in the attached table, my 2368rpm tier is closer to the 2496rpm one in the stock table. So I copied and pasted the IPW values from that stock table. The last one (7008) was a -very- slightly enriched version of the 6496 one...

- Raised rpm soft limiter to 6912 and hard limiter to 7008

- Updated "full load recognition - vanos active" to match actual TPS at WOT (the stock table shows 69.8, whereas my previous log showed 68.8 at WOT; the logger might not reflect precisely the actual recognition treshold, but I thought I'd slightly lower it just in case) and updated "full load basic" accordingly, to keep the same diff between it and "FLR - vanos active" as in stock table

- Raised idle speed to 750 @ 60C° and 740 @ 90C°.

As you can see it's really not much, but that was a way of testing grounds a bit with Chipster MSS5x Flasher and Rom Raider. Thanks to all who have helped me perform this first flash one way or another, there is so much to be learned here!

Hi all

I will write what i did on my car maybe help someone

rev limiter to 7000

I didnt changed rpms axis because he use last value from table example ( if 6500 is max you put 7000 rpms limit he will use spark and fuel from 6500 till rev limiter

I changed disa value to be open on high loads
edited spark from 300 load and 3000 rpms 1,5 deagrease advanced
Vanos 120 value intake from 4100 to 7000 on WOT high rpms to make more HP ( i hope )
TB reaction 240 value
Fuel map only on high load and high rpms edited
Crackle map for fun
O2 disable
Cat heating function disabled
WOT full load recognition edited for lower TPS values

On ms42 with the 20 pin under hood connector, are we supposed to jump pins there just like on MS41? Diving into my e46 tuning tonight...

No need for that.

Yep. Figured that out. Thank you very much for replying to my e46 noob tuna question.

Where are the sap maps on this?
I disable the logic and the dtc, I’ve just read things about zeroing our the maps too.