I have a 99 cavalier with t3 turbo 32lb injectors with the 2200 and I am trying to figure out how to get the computer to be able to function with the boost. I have looked into the ld9 flash dont really want to use it though because of loosing gauges. Is there another way like going into the fuel tables if so does anyone have a decent setup to start with or something? If not could someone please email me the ld9 flash to shall69@aol.com
Can this tune 2 bar for turbo and s/c applications?
Yes and no. They don't have the support yet, but they will shortly. The support WILL ONLY EXIST FOR THOSE VEHICLES THAT CAN GET THE 2 BAR FLASH FROM THE DEALER. THIS MEANS ONLY THE 2000+ LD9 AND 2003+ ECOTEC WILL BE SUPPORTED. There is no plans, now or in the future, to make a custom OS for the 2.2/2200/pre 2k LD9's. That doesn't mean all is lost. You could fake a 2 bar tune with a 2 bar sensor, and just double the value in each KPA cell in each of the MAP driven tables (for example, 50kpa would now be 100kpa on the axis, you would just need to keep it straight in your head).
Can this tune 3 bar for turbo and s/c applications?
There is no inheriant support planned for 3 bar OS's for any J-Body application. You can fake a 3 bar tune however, just as explained above, only the values would be increased by .3 for each axis for those with the 2 bar tune (100kpa would now be 133 kpa), or times 3 for those who are using a 1 bar tune (100kpa would be 300kpa).
This is from the sticky at the top. It is called a 2 bar fake if you want to look into it more.
People that sticky is old and out dated. Forget fake 2 bar. You can tune with HPT for boost. Your fuel tables are not based off boost, or map, but TPS. You are going to have to raise the VE offset to add the fuel you need. You might need a boost pump, or upgraded fuel pump.
FU Tuning
I have an upgraded fuel pump. Can i figure out what fuel tables to use by using the HPT VE Tuning - The Easy Way? or possible the same fuel tables from the ld9 flash or maybe the fuel tables from a similiar size engine setup with turbo?
mark hayes wrote:I have an upgraded fuel pump. Can i figure out what fuel tables to use by using the HPT VE Tuning - The Easy Way? or possible the same fuel tables from the ld9 flash or maybe the fuel tables from a similiar size engine setup with turbo?
You can use the GM reflash for a 2.4 supercharged car, but you will loose some gauge functions. Do a search for more info on that. Other than that you use the VE tables already in your ECU. No way to modify them to read boost (other than the Gm relfash).
FU Tuning
so if I use the ve tables already in my ecu then go by the HPT VE Tuning - The Easy Way? to tune them in will the car be able to run right or will the boost still throw off the computer?
If you're going with a 1-bar set up, you're going to want an FMU to take care of the part-boost/part-throttle situations. Turbos produce boost in a load dependant manner, not an RPM or TPS dependant manner, so a 1-bar tune will either be lean in the higher gears, or rich in the lower gears when transitioning into boost.. More load in high gear = boost at lower RPM.
You could get it very close without the FMU, but FMUs are cheap relatively speaking. Just try not to exceed 80PSI fuel pressure on the stock pump.
ok I also have an fmu but I was going to change to a fuel pressure regulator. So if i use the hpt ve tuning guide does it disable the read on the boost so the computer does not act up? It just reads from the fuel tables or what? If i was to go with the 2.4 reflash i think i add a 2 bar map right? Would the car run better with the 2.4 reflash or can it run just as good by doing the ve tuning?
If the LD9 s/c re-flash works on a pre-2k 2200, that would be ideal. Yes you would need a 2-bar map, and from there you would still tune the VE tables, injector constant, ect. The difference is, the VE (fuel) tables would read up to 15psig instead of TPS. You'd have to ask around if the reflash works on pre-2k LN2 ECUs though - i haven't heard one way or the other yet.
I really think you need to step away from your car, and do alot more research on tuning. Your ECU can not read boost and will not know boost is in the mix.
You could run a FMU, but I do not feel you need to. Sometimes they become more of a pain when tuning.
FU Tuning
Yes i dont really want to run the fmu I want to have fuel pressure regulator. So you think the best way to tune the car would be to start with the ld9 flash? Or will the final tune be the same either way?
