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Problems with Datalogging
Posted: Thu Nov 03, 2005 10:22 am
by highrevs99
I have been tuning a 93 Civic with K-manager and it will only datalog for about 10-30 sec. and drop offline , we have tried three different laptops ( 2 dell 1 Compaq ) still same problem . I have done a search and saw that dells have this problem this is why we changed laptops , also did the engine ground suggestion . Please help this makes it a pain to tune .
Re: Problems with Datalogging
Posted: Thu Nov 03, 2005 10:59 am
by Razathorn
highrevs99 wrote:I have been tuning a 93 Civic with K-manager and it will only datalog for about 10-30 sec. and drop offline , we have tried three different laptops ( 2 dell 1 Compaq ) still same problem . I have done a search and saw that dells have this problem this is why we changed laptops , also did the engine ground suggestion . Please help this makes it a pain to tune .
Try using a usb cable that has better shielding. Has the k series motor had any ignition system changes done?
Posted: Thu Nov 03, 2005 3:53 pm
by highrevs99
The same usb cable and laptops work on other k-pro ecus so it may be his daughterboard . No there is no ignition changes .
Posted: Fri Nov 04, 2005 10:21 am
by Razathorn
highrevs99 wrote:The same usb cable and laptops work on other k-pro ecus so it may be his daughterboard . No there is no ignition changes .
On other ecus in *this car* or other cars? That's important.
Posted: Sun Nov 06, 2005 7:26 pm
by highrevs99
Other cars .
Posted: Sun Nov 06, 2005 7:55 pm
by Razathorn
highrevs99 wrote:Other cars .
I do not work at hondata.
That seems to sum it up -- it's either a defective kpro ecu or interference. I'm betting on interference. There is probably something causing electrical interference in that car, enough to break usb communication. This has been seen a few times -- and most cases were solved with a better shielded usb cable and or ferris loops around the cable ends. The fact that it works in other cars, but not this car, seems to strongly indicate, to me, a difference in electrical noise (noise floor) when working with this car.
Finding the source of the noise (which may fairly hard) or addressing the usb cable shielding / ferris loops is really the only way to address this behavior.
If that doesn't work, or if you would rather try it first, trying a different kpro ecu of the same application may help rule out the ecu.