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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 01-03-2011, 04:24 AM   #301
SL Blak Soldier
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weren't able to get it to pass with the sims?
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Old 01-03-2011, 08:15 AM   #302
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Bought a new o2 sensor, and still cant get rid of the SES
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Old 01-03-2011, 12:20 PM   #303
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go here

http://www.dinancars.com/university/ and click on Dinan's E90-92 M3 Exhaust you may find it interesting...
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Old 01-04-2011, 10:19 AM   #304
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Passed the first year. Wasn't able to pass this year. They changed the laws in TX. Last year you could have 2 monitors "not ready". This year it's 1.

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weren't able to get it to pass with the sims?
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Old 01-05-2011, 12:36 AM   #305
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Passed the first year. Wasn't able to pass this year. They changed the laws in TX. Last year you could have 2 monitors "not ready". This year it's 1.
You still haven't gotten the monitors to check off yet? Did you get the LC-1 installed yet? What are your voltage curves?
A good catalytic converter voltage will look like this .650Volts from 8:1 AFR up to about 19.1AFR then go about .099 volts up to 22:1. This will give you the .650 volts that you need and give you then lean signal on decel. that the DME checks to make sure we haven't been screwing around. Also in the sub menu you want o set the delay to the 1/3 second delay, this sill slow it down a little also.
About once a year you might need to pull the wide band 02 sensor and do a free-air calibration. But my monitors check off in a matter of 20 miles and stay that way all year long. Good luck!
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Old 01-05-2011, 12:45 PM   #306
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You still haven't gotten the monitors to check off yet? Did you get the LC-1 installed yet? What are your voltage curves?
A good catalytic converter voltage will look like this .650Volts from 8:1 AFR up to about 19.1AFR then go about .099 volts up to 22:1. This will give you the .650 volts that you need and give you then lean signal on decel. that the DME checks to make sure we haven't been screwing around. Also in the sub menu you want o set the delay to the 1/3 second delay, this sill slow it down a little also.
About once a year you might need to pull the wide band 02 sensor and do a free-air calibration. But my monitors check off in a matter of 20 miles and stay that way all year long. Good luck!
Nah, his problem now is the monitor for the O2 heater circuit.
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Old 01-05-2011, 07:20 PM   #307
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I just checked it out. I had cleared it a week or two ago. Catalyst and O2s again... hmmmm.

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Nah, his problem now is the monitor for the O2 heater circuit.
Just changed my rear shock mounts again. Passenger's side was about 80% torn. Also checked the dampening on my Konis. One was a little stiffer. Adjusted. Car feels a bit better. The train-track test said all is good.
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Old 01-08-2011, 02:01 AM   #308
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Ok.. So what are your voltage curves that you entered into the LC-1? What kind of resistors are you running? I found a pair of 50ohm 20Watt resistors, one for each of the two heater circuits.
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Old 01-10-2011, 10:30 AM   #309
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Checked this morning. Catalyst had passed. Heaters still no.

Honestly, I'm not sure what resistors are on there. I had purchased a pair from o2simulator.com a long time ago. Just used them.

Also, I made the mistake of putting them in the same little project box. They've warped it. Time to separate them and remount the boxes.
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Old 01-17-2011, 12:45 AM   #310
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Checked this morning. Catalyst had passed. Heaters still no.

Honestly, I'm not sure what resistors are on there. I had purchased a pair from o2simulator.com a long time ago. Just used them.

Also, I made the mistake of putting them in the same little project box. They've warped it. Time to separate them and remount the boxes.
If you have an electronics supply house you can look for something close to 40 ohms resistance rated to about 25watts and that should work just fine for a heater circuit. I have used as high as 50h ohm and still had it check off the heater circuit. Glad to hear you got the monitors to check off.
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Old 01-18-2011, 03:36 AM   #311
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I just read the whole thread. Awesome project aggie! Keep up the good work, I have more to learn from you lol.

When doing my headers I relocated my O2 sensors to the "drugbin" and wired the O2 simulator to use the actual oem heater circut instead of a resistor. That seems to work ok. Maybe your resistors have just gone bad? They do that...

I'm going to go look into the HKS and Magnaflow exhausts
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Old 02-07-2011, 09:52 PM   #312
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I have 330ci with ebay header, then X pipe, then two AR25 resonator and then a dual magnaflow muffler (quad exhaust setup), and I think I lost some low end torque, thinking of putting back my cats. my piping is 2.25, except for resonator and muffler are 2.5
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Old 02-07-2011, 10:18 PM   #313
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I have 330ci with ebay header, then X pipe, then two AR25 resonator and then a dual magnaflow muffler (quad exhaust setup), and I think I lost some low end torque, thinking of putting back my cats. my piping is 2.25, except for resonator and muffler are 2.5
X-Pipes are generally better for high end power and I think those AR25's may hurt low end torque a bit too, not to sure.
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Old 02-13-2011, 12:32 PM   #314
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I'm really itching to see what numbers the Dinan CAI will make.
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Old 02-13-2011, 01:24 PM   #315
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X-Pipes are generally better for high end power and I think those AR25's may hurt low end torque a bit too, not to sure.
I forgot I made that post in your sig. I'm still on track to achieve this....

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I'm really itching to see what numbers the Dinan CAI will make.
Me too. Problem is, Brady hasn't got it yet. Somebody better get off their butt and ship that thing....
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Old 02-13-2011, 07:10 PM   #316
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Aggie I've got an extra Dinan CAI sitting around if you want to test it....

Just needs to be cleaned

Im waiting for spring to install
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Old 02-13-2011, 07:45 PM   #317
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I forgot I made that post in your sig. I'm still on track to achieve this....
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Old 02-13-2011, 10:59 PM   #318
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This could be of interest to you guys. My boys locally are dealers but the company is based in Cali. I know the owner as he came to Vancouver to do some tuning on some cars. Good guy!

http://oetuning.com/blog/?p=355

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Here are the results from a recent dyno session of a 2002 E46 330i. The car had no mods and was running CA91 pump gas. ECU tune gains of +19Hp@4700rpm & +20Tq@3650rpm were seen to the wheels. Throttle response, drivability and all-round performance are improved.
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Old 02-13-2011, 11:31 PM   #319
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This could be of interest to you guys. My boys locally are dealers but the company is based in Cali. I know the owner as he came to Vancouver to do some tuning on some cars. Good guy!

http://oetuning.com/blog/?p=355
Something is seriously wrong here. figuring a 15% drive train loss, that car should be making whp numbers in the 190's.
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Old 02-14-2011, 12:19 AM   #320
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Something is seriously wrong here. figuring a 15% drive train loss, that car should be making whp numbers in the 190's.
That's what I thought too. But if they screwed up on environment correction but kept the same, then the difference in numbers should be the important part. If the car does make 200RWHP technically, then it still gained that difference. I'm going to look into it more. I'll give the owner a buzz.
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