So, you have E85 in the tank?
You're going to go around in circles every time you fill up.
Can you go back to 98?
This is what you SHOULD do:
I assume you're using stock MAF sensor with same diameter MAF housing as stock.
You should have 100% 98 in the tank, use the 100% STOCK MAF scale which is very close for E0, then you can scale your injectors.
Once you have your injectors scaled, you can then do the 100% DI scaling and 100% PI scaling to tweak the injector scales if required.
THEN scale the open loop MAF.
Then you should put E85 in and re-scale the injectors for E85.
If you don't want to do that, you could do the same on E85.
You need a 100% stable blend/mixture though.
And you will need to pick a MAF scale to do the port injector scaling.
I use the CL part of the openflash scales for my E85 tunes.
Do the 100% DI scaling to scale the closed loop MAF scale.
Then do 100% PI scaling against your closed loop MAF scale to scale your port injectors.
Then combine DI/PI and do your open loop MAF scaling.
If you have a stock MAF sensor and stock MAF scale, and are seeing 20% trims, it's an injector scaling problem, not MAF scaling. Adjusting the MAF scale by that much will throw your tune out by putting you in to different load columns.
If the kit came with a different MAF scale due to having a different MAF housing diameter, then you will need to use that scale.
Note: most petrol tunes from the US and especially the openflash petrol tunes have MAF scales for E10. If the tune is for E85 though you might get lucky.
Quote:
Originally Posted by dave-
Ok lets see if I can get anywhere with this, apologies in advance for the TLDR...
SBD OFT Tune
http://www.datazap.me/u/dave/brzedit-turbo
Base timing was reduced and POL made a bit richer against wideband on th dyno otherwise nothing really changed, was just to verify install.
Log was done in BRZedit, think there were too many items selected as sampling rate isn't great.
I'd gotten some sort of MAF limit error which from memory was because LTFT had hit +30 or +40, not sure exactly. Between then and now, we found out that the primary O2 bung on the downpipe was too big and the sensor probably wasn't in far enough to be reading correctly.
99.95% sure we have O2 part sorted now as I have an LC1 wideband in the front pipe before cat and there isn't a lot of difference between them until going very rich which the factory sensor isn't capable of reading? I'd have that data in my tactrix log but can't find a 2.5mm stereo adapter smaller enough to fit in the LC1 socket.
Unfortunately before fixing all that, we put in the bigger injectors in preparation for more boost and E85, rookie mistake I know.
Current Tune
This was supplied a base tune that should be suitable for my turbo kit. It has been tweaked for the ID850 injectors. Car starts perfectly cold and hot so I think we have the cranking side ok?
This is immediately after flashing the file and leaving the car idle.
http://www.datazap.me/u/dave/base-tu...ed-id850s-idle
This is cruising around the car park and down the street. There are 3 logs, second and third are because the car stalled as per the hesitation mentioned on light throttle.
http://www.datazap.me/u/dave/base-tu...d850s-cruising
I then zero'd out the 3x DI/PI tables so we'd have 100% DI to see if anyone here could see something odd in the logs. 2 logs in the link, one idle and the other a light cruise. I'm not sure if it was my imagination but the idle dip issue did seem to go away.
http://www.datazap.me/u/dave/base-tune-di-only-id850s |