startup/safe tune for a 5.3 with an ss2 cam12212156 bin

[dave w]

It's challenging to figure out a good tune for a modified engine. If at all possible, I start with a flash that needs the fewest modifications possible

One method to build a tune for a modified engine is to copy / paste parameters from a factory flash into the custom flash.

The attached .bin file has 2002 L59 injector parameters. There are several tables for injector parameters.

Possibly copy / paste all the L59 injector parameters from the attached .bin file into the starter flash.

I'm curious about the Alcohol % table if the custom flash is for flex fuel.


L59.jpg

Alcohol Percent.JPG

[2xls1]

It's challenging to figure out a good tune for a modified engine. If at all possible, I start with a flash that needs the fewest modifications possible

One method to build a tune for a modified engine is to copy / paste parameters from a factory flash into the custom flash.

The attached .bin file has 2002 L59 injector parameters. There are several tables for injector parameters.

Possibly copy / paste all the L59 injector parameters from the attached .bin file into the starter flash.

I'm curious about the Alcohol % table if the custom flash is for flex fuel.


L59.jpg

Alcohol Percent.JPG

The problem with doing that on this build is the FF vehicles with a vacuum referenced regulator used a lower fuel pressure than non FF. That is why the IFR has them at 33 lb/hr/ Those same injectors when used in a non return FF fuel system (05-07 classic L59) used the higher 58 psi pressure like the earlier LM7 vacuum referenced regulator. That is why in this case he needed to use the 35.4 lb/hr setting in his calibration. If he would reply and answer the questions I could give him a good file to start much better than what he is currently using. The file he is using is not a FF calibration.

[dave w]

The problem with doing that on this build is the FF vehicles with a vacuum referenced regulator used a lower fuel pressure than non FF. That is why the IFR has them at 33 lb/hr/ Those same injectors when used in a non return FF fuel system (05-07 classic L59) used the higher 58 psi pressure like the earlier LM7 vacuum referenced regulator. That is why in this case he needed to use the 35.4 lb/hr setting in his calibration. If he would reply and answer the questions I could give him a good file to start much better than what he is currently using. The file he is using is not a FF calibration.

I have TunerCats OBD2, so I'm not limited on the OS I can work with.

Often engine swap "plans" will have a complete package, engine / computer / harness / OS from the donor vehicle. Often the L59 is retro fitted into a vehicle where the Flex Fuel option is not going to be a requirement. Eliminating Flex Fuel from the original L59 Flash is easily done. Programming for an aftermarket camshaft profile into the original L59 Fash is easily done too.

When the "plan" includes a using mix and match of engine / computer / harness / OS not all from the donor vehicle, the challenges for a flash become complicated and for some overwhelming possibly impossible.
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The old saying "the devil is in the details" is echoed again when using a mix and match of engine / computer / harness / OS not all from the donor vehicle.