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7 votes

Do automakers ECU-tune their motors to make new models and versions?

It's absolutely true that auto manufacturers tune engines to give different performance levels. I had a BMW 530d and discovered it was the same engine as the 535d, the only difference was the ...
GdD's user avatar
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5 votes
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Considerations for a successful VW 2004 Jetta 2.0L engine swap in place of a 1.6L engine

It would help if we had the engine codes and the two ecu types (EDC15/16, Med7/9 ect) and the fault codes that are present but here goes: It sounds like the engine was swapped complete with the ...
Newbie Noob's user avatar
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3 votes
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Do automakers ECU-tune their motors to make new models and versions?

How sound is this analysis in the case of landcruiser 150 2.8 D4D 177hp? I think it is very sound. @GdD has very valid points. The thing to remember with turbocharged engines, especially diesel ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

Uploading a tuning file to my car

Ask the vendor (mychiptuningfiles.com) what they recommend. The different programmers available - trifecta, HP Tuners, etc. - all use different file formats, so which one you can use will depend on ...
3Dave's user avatar
  • 3,149
2 votes

How accurate is the air-fuel-ratio set by the ECU?

This is not a "definitive answer" by any means, but I think it gets to heart of the question. "Does it have to be exactly 14.0 ... would anyone notice 13.9/14.1?" Most likely, you wouldn't notice ...
kyle_engineer's user avatar
2 votes
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Should I retard the ignition timing on higher RPM on natural aspirated engine?

Because there is less time for ignition events to occur at higher RPM, the timing should be advanced. If you retard the timing at higher RPM, the ignition event will be happening too late in the ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

What kinds of tuning can ruin a car's ability to pass emissions testing?

Unless a good exhaust gas analyser is used it's difficult to see what the end result of tuning is from an emissions standpoint. Changing anything from spark timing, air fuel ratios, VVT, EGR, DBW, ...
ajayel's user avatar
  • 484
1 vote

What kinds of tuning can ruin a car's ability to pass emissions testing?

Performance tuning changes the fuel delivery and other things like the ignition timing to develop more power. This is fine, but when certain countries set emission standards of x at y rpm then due to ...
Solar Mike's user avatar
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1 vote
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ECU tune file formats

The file format is just hexadecimal, it isn't human readable it's just hex stored usually as a .bin file however some tools and software have their own extension such as .cod .dtf etc. The file ...
Newbie Noob's user avatar
  • 2,781
1 vote

What is choppy throttle response and bad fuel mapping and can it be fixed?

This problem can be resolved by using TuneECU TuneECU is a free tool supported by a community. I am unsure if it's open source. This tool can access your ECU and change individual settings within ...
DucatiKiller's user avatar
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