http://autos.groups.yahoo.com/group/BoschDME/ Bosch DME Modifications Sun, 22 Nov 2009 08:40:05 GMT WhizzMan http://autos.groups.yahoo.com/group/BoschDME/message/576 http://autos.groups.yahoo.com/group/BoschDME/message/576 ... That depends, some ECUs have code that doesn't use it. I'm fairly certain the M1.7 is one of them. I've had several broken AFMs (literally, backfires broke Sat, 21 Nov 2009 22:00:21 GMT efidabbler http://autos.groups.yahoo.com/group/BoschDME/message/575 http://autos.groups.yahoo.com/group/BoschDME/message/575 This is very close to what was published in a 1977 technical paper by Bosch. The key item is that the Base Time is an injector flow coef. Possibly mg/msec or Sat, 21 Nov 2009 20:35:36 GMT efidabbler http://autos.groups.yahoo.com/group/BoschDME/message/574 http://autos.groups.yahoo.com/group/BoschDME/message/574 Thank you very much Tom. This gives me a starting point. Mike D. Sat, 21 Nov 2009 17:28:28 GMT T_Voigt http://autos.groups.yahoo.com/group/BoschDME/message/573 http://autos.groups.yahoo.com/group/BoschDME/message/573 So load is a short value of BTi (base injection time) with the unit time Load = BTi/25 The final injection time Ti is: Ti = (BTi * AdjustmentFactors) + Sat, 21 Nov 2009 16:45:41 GMT T_Voigt http://autos.groups.yahoo.com/group/BoschDME/message/572 http://autos.groups.yahoo.com/group/BoschDME/message/572 Thanks for your help. I wasn't sure if this command is a hidden secret in the 8051 world... ... It is a subroutine that is used to add A to B and store the sum Sat, 21 Nov 2009 15:42:35 GMT ubiquityman http://autos.groups.yahoo.com/group/BoschDME/message/571 http://autos.groups.yahoo.com/group/BoschDME/message/571 It's SFR space. For a 8051 and 8052, 0FFh is not defined. MOV A, 0FFh This instruction would not be illegal, is not good practice. One should not read or write Sat, 21 Nov 2009 13:19:52 GMT T_Voigt http://autos.groups.yahoo.com/group/BoschDME/message/570 http://autos.groups.yahoo.com/group/BoschDME/message/570 Can someone look at this code? ADD A,B ; 0a55 25 f0 %p JNC xlable ; 0a57 50 02 P. MOV A,0FFH ; 0a59 e5 ff e. xlable: MOV B,A ; 0a5b Fri, 20 Nov 2009 21:55:04 GMT jcdmartins33 http://autos.groups.yahoo.com/group/BoschDME/message/569 http://autos.groups.yahoo.com/group/BoschDME/message/569 Hi, I'm new in the chip tuning, and I'm trying change the rev limiter of a chip of my Citroen AX GTi, the actual rev limiter is to elevated (8100) I think... Thu, 19 Nov 2009 08:29:37 GMT T_Voigt http://autos.groups.yahoo.com/group/BoschDME/message/568 http://autos.groups.yahoo.com/group/BoschDME/message/568 ... Hi Joshua. Thanks for this link. It describes the code I'm currently looking at. This guy TT was here before. Respect. It looks like there is a basic Wed, 18 Nov 2009 22:23:15 GMT Joshua Cunningham http://autos.groups.yahoo.com/group/BoschDME/message/567 http://autos.groups.yahoo.com/group/BoschDME/message/567 IIRC, the AFM curve is a function from the three AFM tables: T1 x T3 x 2^T2 Also take a look at this post made by TT. Load is something I've been meaning to Wed, 18 Nov 2009 19:01:45 GMT T_Voigt http://autos.groups.yahoo.com/group/BoschDME/message/566 http://autos.groups.yahoo.com/group/BoschDME/message/566 ... Yep. Thanks for the response. I'm sitting in front of the code calculating the load value. The AFM curve is scaled strangely. A lot of questions are open. Wed, 18 Nov 2009 10:22:50 GMT Alexis Pavlov http://autos.groups.yahoo.com/group/BoschDME/message/565 http://autos.groups.yahoo.com/group/BoschDME/message/565 Hi Christian, Which Harris chip do you think of ? Wed, 18 Nov 2009 10:20:26 GMT Alexis Pavlov http://autos.groups.yahoo.com/group/BoschDME/message/564 http://autos.groups.yahoo.com/group/BoschDME/message/564 Basically it's the amount of air in grams entering each cylinder per cycle. To get it Motronic takes the flow, gets the volumetric flow, corrects it with air Wed, 18 Nov 2009 09:58:47 GMT T_Voigt http://autos.groups.yahoo.com/group/BoschDME/message/563 http://autos.groups.yahoo.com/group/BoschDME/message/563 There is one parameter in the motronic tables, I'm still not finally finished with: the engine load parameter. How is it calculated and what unit would Wed, 18 Nov 2009 09:51:31 GMT T_Voigt http://autos.groups.yahoo.com/group/BoschDME/message/562 http://autos.groups.yahoo.com/group/BoschDME/message/562 ... Hello Mike. Sorry for the late answer - I wasn't online for a while... Yes - I used the MPX4250 sensor as replacement. I also had to adjust all three PID