Starting to get into it

Yesterday was a very enlightening day as I had almost the whole day to replace the oil and do some tuning.

The old R8 neeeded its skidplate removed to give me access to the drain plug and oil filter. Thankfully the filter looked reasonably new and wasnt on too tight, a slight mess on the driveway later and 4L of 15/40 and 500m of 0/40 Mobile1 later and we are good to go.

I decided to update to efilive custom os v3 which was relatively straight forward, after flashing the base OS in and then flashing my 260KW HSV tune back in all "looked" well. I made the recommended alterations to the custom parameters and fired it up. The idle was shocking and it seemed no better at higher RPM, the car stalled.. Ok so checked out what was happening and reset idle to 800 rpm, still no good. Maybe I wasnt paying attention and did something wrong.

At this point I decided Id go back to the OEM OS, but decided on the 285KW tune instead. I will get a tune happening on the stocker then have another go at the custom OS. The 285KW tune was for an Auto so I had to disable some codes and copy and paste a few of the trans fields over from the R8 including speedo settings. The car fired up no problems, there is a lot more timing in this tune over the 260KW one, in fact thats where most of the changes seem to have taken place. After going for a drive I found out as others have suggested that the 285KW tune is a little "sharp" on the timing with up to 4deg Knock Retard recorded. So a little tweaking to pull timing from the high octane table as indicated by the logs and another flash, though as well as pulling the timing I decided it was time to go Speed Density (SD) mode and start tuning the VE table properly. The MAF was duly unplugged and the P010x MAF MIL (SES warnings) disabled.

Now are are cooking on gas! That made a big difference, the car now no longer feels like a slug sandwich down low and jumps off the mark, a review of the logs shows no knock either. So a good few minutes of warmup to let the Long Term Fuel Trims (LTFT's) get themselves together and I logged using "Black Box" mode some data. "Black Box" mode allows EFILIVE users to log data in the car without a laptop, just a small cable connected box which can be tucked out of site. The box has about half a Mb of space, enough for me to log 40min with 9 PID's. The default is a load of tiny files which were not much use, so I have reconfigured for one large file. I really must read the manuals!

Ive updated the VE table based on the RPM vs MAP vs LTFT bank 1 results. Going forward Ill update the Map to average bank 1 and bank 2. As a side note injector duty cycle was at 25% at 2500 RPM, Ill have to check it at motorway speeds under full throttle, though for LTFT tuning hitting PE mode is a no no, as the PCM dumps in extra fuel so you wont get any useful information for tuning.

So a new VE table with values about 10% higher then smoothed once retaining high and low values is the result. Lots more logging and tuning over the next week or two. Off to Wales this weekend to see the All Blacks destroy the Welsh so should get plenty of logging and tuning done.