Finally got fueling ECU control, good results!

**lswing** · June 11th, 2012, 06:04

Here's a log from today, much better, and I now have access to fueling on multiple parameters. Added 3% under load and .2% overall. Will continue to fine tune. Could not get Lemmi to connect, so found Unitronic's version that connects through USB, they both access the Bosch ME7 ECU. A few steps to get it right, let me know if you need them. The car is a rocket right now, super smooth up to any speed...

I could still add a bit more fuel to bring the lambda up and reduce egt's further...

Click image for larger version.

Name: 6-10log..jpg
Views: 100
Size: 88.9 KB
ID: 12691

<body> This page uses frames, but your browser doesn't support them.<br /> </body>

<body> This page uses frames, but your browser doesn't support them.<br /> </body>

<body> This page uses frames, but your browser doesn't support them.<br /> </body>

**kismetcapitan** · June 11th, 2012, 07:34

you're not trimming fuel based on stock O2 sensor readings, are you? One simply cannot make accurate fuel maps unless you have a wideband lambda telling you EXACTLY what the air/fuel ratio is at a given RPM, load, and boost.

**lswing** · June 11th, 2012, 07:54

Nope, not trimming, adding, and not solely based on lambda. I'll be putting a wide band on and spending some time on a Dyno one day here to perfect. Timing, EGT's are good, and no fuel dump in by the ECU at top end. Logs I took before this showed fuel dump when I was hitting 950 egt's at redline...

Thread: Finally got fueling ECU control, good results!

Thread Tools

Rate This Thread

Display

Finally got fueling ECU control, good results!

Posting Permissions