|
Title: HPX-E Transfer Sheet Discovery Post by: q_dubz on April 13, 2019, 04:53:10 AM I dunno if this has been brought up elsewhere, i never saw it mentioned in the search, only that no one trusted the transfer sheet and i found out why.
I started messing around with the transfer sheet and made an additional section to handle the 129 values of my MSHFMU map. When i was done copying all the formulas, i discovered that the calculated airflow at 5v did not match the original 30pt curve. It did match the 256 and the 512 curves however. So something was amiss. Low and behold for the A/D counts; the function to calculate "D" was missing the multiplier (1.33) needed for the HPX-E sensor. Code: =(-9.475184+59.921788*L177-135.60886*L177^2+166.77782*L177^3-111.50394*L177^4+44.218751*L177^5-10.131798*L177^6+1.2482716*L177^7-0.065666262*L177^8+0.00029343852*L177^9)*1.33 This looks better. Interesting side note: the Bosch sensor doesnt start reading positive flow in my map til 1v ??? Title: Re: HPX-E Transfer Sheet Discovery Post by: q_dubz on June 19, 2019, 03:21:07 AM Got an email back from PMAS last night confirming it was indeed an error and will update the sheet on the site.
|