4age - ecu, how does it work?

[biGtai]

hello y'all.. cbf reading the responses, but Jeremy Ross seems to be the author of the very well written article. I found it .
it explains it really well. enjoy.

[DAMO46]

shit, thumbs up to this thread, awesome read

[70XIN]

thankyou very much kiddies, thats exactly what i needed

[Frak]

Thanks,Just gave them a read, they are excellent.

[tuned86]

ah yeah it was Jeremy's article. Was trying to load the doc to photobucket but it doesn't accept pdf files ><.

[Hen may possibly be a nut]

That article is a great read. Good to see someone cracking one open and fiddling around inside.

Hen

[paulv]

So, is the 4age 20v ecu on the silver and black tops vastly different or?

[Anthony]

vastly different to the bigport ecu above? yes!

Well pretty much the same idea, just with a lot more of everything. A lot more tables to look up (including some for vvt operation) more reliance on o2 and knock sensors, better fault detection etc.

[Sam-Q]

I am tottaly with you on the thing about the air fuel ratios vs emmisions Frak. Some engines if it wheren't for the nitrogen readings would run very lean indeed. One of the two times I can think of where fuel economy is compramised for better emmisions