### ## ### ## # ##### ## ## ## ## #### ###
# ###### ## ## ## ## # ##
## ## ####### ## # ## ## ## ## ##
______ | ___ \ | |_/ / | ___ \ | |_/ / \____/
## ## #### ## #### ## ##
IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now. Visit Preferences to set your user name Summary of change: '''This page is dedicated to Low-Z injector tuning, at BMW M30B34 turbo engine.''' Injectors are the stock ones for this engine: Bosch part no. 0 280 150 200, maybe 270-300 cc/min @3/3.5bars (different sources say different values). R=~3 Ohms. ---- My previous calculation was for required fuel: Req_fuel = 6.49 * (D / N / I) = 6.49 * (3450 / 6/ 300 cc/min) = 12.44 ms = 0x7C Which seems to be on the high side. (So the injectors are not 'so' big for this displacement). But engine was flooded with those values, finally I ended up with a Req_fuel of 5ms, and still I've got VE values of 20-30 (decimal) near idle. Idle is ~1ms pw. I guess something is wrong with injector settings. I worked with the following settings: http://quasar.dynaweb.hu/~lezsi/bmw/attila/attila-injsettings.gif I guess a PowerFlyback couldn't be a bad choice here. If you're interested [http://quasar.dynaweb.hu/~lezsi/bmw/attila/datalog200512302240run.xls here's] a datalog with starting, badly oscillating idle, and cruising home with unmapped car, etc. For analysis I suggest my actual favorite: [http://www.ideasandsolutions.biz/MegaLogViewer/ MegaLogViewer] the first program which knows everything I wanted, not buggy (just a bit slow -java) Optional: Add document to category: Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.