Re-scaling MAT counts table $8D SAUJP

Post by **VL400** » Tue Feb 19, 2013 6:34 pm

Try 7133

34blazer · Post by **34blazer** » Tue Feb 19, 2013 6:40 pm

VL400 wrote:The bin must be only 32k, so its 0-7FFF in size. The ECU/processor maps it to 8000-FFFF, so in ECU speak F133 is 7133 in your bin (7133 + 8000 = F133).

When I have looked at rescaling I found it easier to play with pull up resistors and leave the code alone, a temp sensor is highly non-linear so pullup choice is pretty critical for the range you expect to operate in.

Thats it!!! i didnt think about that but yes the bin is only 32k.

well, ive been chasing a problem with my MAT counts table. i made a video awhile back to try to explain what the problem is. my knowlege runs out when you talk about pullup resistors. im thinking something is goofed with this table, either way something needs fixed so i can tune my MAT table correctly. a vid...

http://www.youtube.com/watch?v=IQUyS5wfLMo

Thanks!

34blazer · Post by **34blazer** » Tue Feb 19, 2013 6:44 pm

hmmm....at 7133 now and not sure if it corresponds to the table in the hac.

Post by **VL400** » Tue Feb 19, 2013 6:47 pm

Interesting, take a log of it idling and post it up along with the ADX. It could be as simple as the wrong calc for MAT is used in TP.

34blazer · Post by **34blazer** » Tue Feb 19, 2013 6:49 pm

VL400 wrote:Interesting, take a log of it idling and post it up along with the ADX. It could be as simple as the wrong calc for MAT is used in TP.

sounds good, will have to be later on as its late here LOL. will be back later, and thanks everyone!

34blazer · Post by **34blazer** » Sat Feb 23, 2013 5:00 pm

sorry for the delay, got caught up fixing the headliner on my pickup and replacing valve cover gaskets on the Fiero over my weekend. Ill post up a datalog within the next 24 hrs, thanks for your patience!

34blazer · Post by **34blazer** » Mon Feb 25, 2013 1:31 pm

alright, finally got some time! again, sorry for the delay. heres the bin/mask/adx/log for your viewing. I can export if necessary.

Thanks again!!

darcy · Post by **darcy** » Mon Feb 25, 2013 2:25 pm

Do the MAT numbers make more sense if you just use the same calculation for MAT as for ECT? (ie X*.75-40 or X*1.35-40 for degrees C or F)

34blazer · Post by **34blazer** » Mon Feb 25, 2013 4:30 pm

darcy wrote:Do the MAT numbers make more sense if you just use the same calculation for MAT as for ECT? (ie X*.75-40 or X*1.35-40 for degrees C or F)

not sure what you mean, isnt that a linear conversion?

Post by **VL400** » Mon Feb 25, 2013 4:39 pm

Roughly what would you expect the MAT to read?

Re-scaling MAT counts table $8D SAUJP

Re: Re-scaling MAT counts table $8D SAUJP

Re: Re-scaling MAT counts table $8D SAUJP

Re: Re-scaling MAT counts table $8D SAUJP

Re: Re-scaling MAT counts table $8D SAUJP

Re: Re-scaling MAT counts table $8D SAUJP

Re: Re-scaling MAT counts table $8D SAUJP

Re: Re-scaling MAT counts table $8D SAUJP

Re: Re-scaling MAT counts table $8D SAUJP

Re: Re-scaling MAT counts table $8D SAUJP

Re: Re-scaling MAT counts table $8D SAUJP