turbolink blm ?

[boostcreep]

I just downloaded the turbolink demo and played with it some. Regarding the blm readings, how do you know which cell you're in? Or am I missing something?

Nick

 

[kenmosher]

Unfortunately the turbo Regals don't report the BLM cell in the ALDL datastream (and from what I've seen with some of the other ECMs, they don't either ... or the WRONG BLM cell in the case of the Syclone/Typhoon!).

 

[boostcreep]

Talk about a late response , but doesn't the ALDL stream report what the BLM value is? It just doesn't report what BLM cell *#* is? Correct? Now, it seems to me that if you made a 1/4 pass, aren't you using cell 15? Could you not label it as such and store it somewhere and then display it on the screen? I mean, the rpm is greater than 1500 and the g/s is greater than 30, that's cell #15. Even though after the pass is done and other cells are being used, this cell number (15) and value would always be displayed but not updated because it is now not being used. To expand this a little further, lets say you have a frame where the rpm is 1200 and the g/s reads 25, would you not be in cell #10? Won't there be an associated BLM value in the data stream and all you gotta do is *calculate* which cell # you're in? Then couldn't you then have a place to store this on the screen? And then eventually have a matrix built for the entire 16 BLM matrix based on the rpm and g/s? Just curious as to why that wouldn't work? Thanks for the response....


Nick

 

[kenmosher]

Depends on the chip ... not all chips use the same BLM range and some extend the tables. Others also remap the cell boundaries and rescale the load.

What you are proposing would be a workable solution for the stock tables, but might be all whacked for some of the chips, IMHO.

 

[ijames]

Also, because of the time lag between BLM, rpm, and maf in the ALDL data stream I would think you would get fooled pretty often except in 3rd gear at wot where things happen more slowly, and like you said, up there you are most likely in blm15 anyway. If you do your own chips you could substitute blm index for one of the two bytes of prom id, but again, you wouldn't know when it was right. Things just change too fast in 1st and 2nd for the aldl data stream to be much use.

 

[boostcreep]

Thanks for the replies. I was just thinking out loud. I just hope you are not *assuming* this is how it would work without actually trying it? It would be a damn shame for somebody else to lay claim to this and use it in another ALDL type of scan tool and claim the rights to it. Again, just thinking out loud.

Nick