- Using Injector Trim Files Engines with ACERT Technology Injector Trim File The. Log in or Sign up. Using Acert Trim Codes Discussion in 'Trucks [ Eighteen. Injector trim files are loaded into the ECM with Cat ET. Cat ET also provides the following services in order to help manage injector trim files: [/FONT].
- We have sent them down the road without changing the trim files, you will have to go in and correct this if the customer comes back with a low power complaint or rough idle issue. Usually if you go to truck.cat.com you can put that number in and it will tell you the sixteen digit number. If not on the disc you can download straight from that site.
Jun 14, 2012 - Results for injector trim codes for c7 cat. Not covered by fault codes. The 2007 and up Caterpillar C7, C9, C13, and C15.
Originally Posted by Far_Call
WOW!!! Just with Trim Numbers?
Ok lets be real here for a min.. The injectors you had must have been on the lowest possible trim numbers or was it set to the lowest before the dyno so that when they were then changed to the highest it showed 150HP gain?
The total Gain attainable can be as much as 150HP depending on many factors and the most influential being the Nozzle orifice size.
Acert Trims on 625 or 550 will be lucky to gain 40HP due to the way the factory trims them in the top 30% whereas the older 3406 and C15 etc were trimmed mostly in the 50% range leaving a bigger window to trim up.
The Trim algo uses an and encrypted 4 didget code between 1000 and 9999. However not all possibilities are used on each ECM so for example a C15 will only take @ 1/2 of the theoretical 8999 possible trim numbers. these can then be divided into groups and reduced into some 460 groups. these groups then can be used to Calibrate an injector to flow across the whole RPM and load range possible.
These is NO Magical numbers as I have tested every single one and plotted them. However there is a large window from the lowest to the highest but in 95% of case Injectors are Trimmed from the factory Mid range in the case of a C15 for example so you wont see the HP gain of the magnitude above.
However if we fit a larger nozzle than listed in the Flash file the engine will produce more HP and we can then trim down the injector to reduce its output and lower HP. Depending on the size we chose we could then be trimming in the low 15% of the Injector trim range allowing for a possible 85% Gain by way of Trim allocation.
Most people who claim to do these magical things do their trimming on the dyno. we can all do that and I have done that. BUT its simply bastardising the injector to get it 'Close' well as close as you can in an engine. The correct method is to Calibrate the injector on the bench prior to installation and any variation thereafter is mechanical and as such the injector should not be altered to compensate for the mechanical defect.
Ok lets be real here for a min.. The injectors you had must have been on the lowest possible trim numbers or was it set to the lowest before the dyno so that when they were then changed to the highest it showed 150HP gain?
The total Gain attainable can be as much as 150HP depending on many factors and the most influential being the Nozzle orifice size.
Acert Trims on 625 or 550 will be lucky to gain 40HP due to the way the factory trims them in the top 30% whereas the older 3406 and C15 etc were trimmed mostly in the 50% range leaving a bigger window to trim up.
The Trim algo uses an and encrypted 4 didget code between 1000 and 9999. However not all possibilities are used on each ECM so for example a C15 will only take @ 1/2 of the theoretical 8999 possible trim numbers. these can then be divided into groups and reduced into some 460 groups. these groups then can be used to Calibrate an injector to flow across the whole RPM and load range possible.
These is NO Magical numbers as I have tested every single one and plotted them. However there is a large window from the lowest to the highest but in 95% of case Injectors are Trimmed from the factory Mid range in the case of a C15 for example so you wont see the HP gain of the magnitude above.
However if we fit a larger nozzle than listed in the Flash file the engine will produce more HP and we can then trim down the injector to reduce its output and lower HP. Depending on the size we chose we could then be trimming in the low 15% of the Injector trim range allowing for a possible 85% Gain by way of Trim allocation.
Most people who claim to do these magical things do their trimming on the dyno. we can all do that and I have done that. BUT its simply bastardising the injector to get it 'Close' well as close as you can in an engine. The correct method is to Calibrate the injector on the bench prior to installation and any variation thereafter is mechanical and as such the injector should not be altered to compensate for the mechanical defect.
Caterpillar Injector Trim File Download
