Last edited by fenugrec on Sun 10:28 pm, edited 19 times in total. You do not have the required permissions to view the files attached to this post. One of them is part of a "loader struct", which start with the strings "LOADER10", "LOADER50", "LOADER80" etc (absent from earlier ROMs). In the gasoline SH7055 and SH7058 ROMs, there are a usually 2 structures containing "DATABASE" in plain text.
#Nissan altima ecu tuning how to#
I only know how to find these in non-Diesel ROMs. There may also be a RIPEMD-160 hash (I wrongly assumed it was SHA-1 at first), but I haven't investigated that one. Std, alt, and alt2 differ by the the area on which they are computed, and which locations are skipped. See the QR25DE thread, and my obsolete checksum finder code and wiki page. std, alt, and alt2 work with the same basic algo (composed of a 32-bit addition, and a 32-bit XOR of all 32-bit dwords of the ROM). See wiki checksum page there are at least 3 types of checksums. M/T model would lack the secondary 7051 ?Ī2L data ! Renault “TK_X91”, config only (missing 0-0x1FFFF)
Patrol GU3 Jan 02, Australian, AT, twin O2SĪ/T 7055 + 7051 combo. NAM AT 2WD 2WD ASCD W/ ASCD Disp in Meter MT, base, no cruise, with RevUp (variable exh valve timing) Posted a corrupt ROM, fixing IVT1 first entries solves it Touring Model, Non-RevUp motor (redline 6500), MT, Cruise, ABS Y34 Gloria no alt checksum ? didn’t check thoroughly. 512k file but sh7058 is reported => bad cks Skyline/G35 Coupe 5AT "dual bosch wideband ctl", 2WD MT, no ABS, cruise ctl OBD K line only, ASCD + NATS immoĪT, Part # Ja56U03, very similar to 6Y300 etc Forget socket wrenches, we have microprocessors now, ready to tap. In fact, lifting the hood doesn't even need to be on the program. Getting the best performance, race-ready horsepower and top torque out of your rig, no longer means being up to your elbows in grease first. (Thanks to dschultz for his nice table markup !)įor quick reference, here's a list of ROMs documented by UpRev. Nissan Altima Performance Chips & Programmers. HWID : Some kind of hardware-related ID but not unique and not necessarily related to ECUID.
#Nissan altima ecu tuning pro#
Pro tip : the QR code on the ECU contains the part #, including ECUID - see here. Perform playback using graphs, gauges and map tracing. Data log from your ECU using consult, wideband and auxiliary inputs. Feel free to submit new ROMs, corrections or additional info !ĮCUID : 5-character code, typically the last part of the part number which is almost always "23710-XXXXX". Nistune is a real-time tuning suite designed especially for Nissans which provides the ability to: Retune factory Nissan Engine Control Units (ECU) Monitor gauges and map tracing on your ECU. Here are a few Nissan / Infiniti ROM dumps I have collected.
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