Anyone care to help with a War Chip car issue?

[anaphe]

First off this is my first war chip car. Car is an e30 m3 race car with a low mile 2.5, 292/284, compression and leakdown numbers are near perfect. Car runs the 071 ECU with the war chip and TCM module. Car was raced extensively up to 2012 and then went into storage until last summer.

My son and I repatriated the car and went though bringing it back from storage. The previous owner (who is a racer friend said at the last race in 2012 the car ran great). A lot can happen in storage.

We basically have done a nut and bolt, fluids, safety items. The fuel system was a bit of work. Had to bench clean the injectors to get the car to start and the fuel filter was plugged from destabilized fuel. Once we went through this the car started better, sounded better and ran better. Fuel pressure is good and ignition components are all new.

The issue is at the track at WOT the car basically hit a wall at 3500-6000 rpm. Feel like ignition (but I could be wrong) and at 6500 it clears up and pulls hard to redline. The temps are stable as it oil pressure.

Looking at the Miller War Chip the WOT Ignition seems odd to me. Does this seem logical? The "wall" was we described correlates with the WOT ignition timing.



I have attached the P/T Ign table as well



Any thoughts before I toss this thing and start from scratch? Anything else to check? Thanks!

[varg]

Yeah, that is odd compared to most aftermarket tunes I've seen and could cause a lack of mid range. But: it reminds me of some of the wacky looking OEM tables I've seen. Motronic (and some other OEM tune) tables look different from what you see in typical aftermarket tunes. I wish I could say for sure that the tables in motronic systems reflect 1:1 actual spark advance, but I can't say with certainty that they're not modified by another table or factor because I always tuned third party engine management systems. Anyone who does fully understand the way motronic takes a table and makes it an output feel free to speak on that fact.

Below is an old image of an M20's tables for reference, you can see that it is "shaped" similarly to yours, with a good chunk of advance pulled in the mid range. So it's hard to say "yeah your WOT table is weird that's why your car lacks mid range power" and not "something else happened while the car sat, it isn't the tune". It would be odd for a car to be raced on a tune that would kill its mid range. It's also possible that isn't the tune or ECU it was previously raced with. I wouldn't expect a race tune to have the driveability, durability and emissions weirdness that is common in OEM tunes.

[Brotronic]

I joined to comment here. I search often for WAR chip stuff. I work towards e36 stuff mostly but this info could be useful to you.

I have looked at a lot of the e36 tunes from miller and they are sketchy and have coding issues and oddities. A lot of user reports of issues.... Anyway you tune can be ported off of the warchip platform to a regular chip/emulator/even a generic 2-8 timer module. Then you can have control of the definition file in tuner pro or romraider software.

Last I tried to contact miller they were out of business. Not sure if that's changed. But if you want to port your ROM there is a app that can convert it or a excel/Google spreadsheet that can do it.

I'd be happy to take a like at you tune and file and see if it has out right mistakes in how it's coded in the ROM. I have a motronic 3.3.1 project I have been slowing working on for years but looking at the earlier stuff helps learn new things too. Plus it's a lot more rewarding hobby if it actually helps someone.