When changing from 26 to 28.8.........
10-01-2006, 06:59 PM
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When changing from 26 to 28.8......... I've found a few threads but have not found a solid or definite answer. When changing to 28.8 injectors in a 2000 LS1, what needs to be changed in the PCM? It was pig rich I and changed the injector flow table to match that of a 28.8 table from an 02 LS1, it is better but not great. I had changed to LS6 intake and changed to 28.8's at the same time, everything else has remained the same (stock heads,cam). Car is still rich and lazy,car not as responsive as stock and mph in 1/4 has dropped considerably.
Other than changing injector flow rate chart am I missing anything else in the tune after changing the injectors?
Other than changing injector flow rate chart am I missing anything else in the tune after changing the injectors?
10-01-2006, 10:46 PM
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The IFR table gets changed when switching injectors. After that if you are running shitty you will need to give it a tune by tuning the VE, MAF, and PE tables.
10-02-2006, 04:01 AM
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Are all the injectors seated physically and electrically good? If the rest of your car is stock the only other thing I could think of is the MAP sensor, is it seated good too? The VE, and MAF tables should be fine if all you have changed is the intake and injectors.
10-02-2006, 07:09 AM
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Thanks guys, it looks like I have changed the proper table (IFR). Looks like next step will be to tune the fuel tables a bit. I didn't want to mess with fuel tables until I was sure I changed all fixed parameters such as IFR. Didn't want to start tuning if I missed something else first.
