I've put together a turbo build for my '98 Camaro (pin-swapped for newer PCM's) and upgraded to 80lb injectors. These are the same injectors that Greg Banish has data for in the spreadsheet included with his DVD. I've used these numbers, but I'm reading everywhere that there is a limit on the 99-02 PCM's of roughly 60lb injectors. Is this true? Does this mean the data given in Greg's spreadsheet needs to be reduced for Injector Flow Rate? I'm beating my head against the wall with this issue. Efilive shows a limit of 511.9922 grams/second in the {B4001} table, but I'm guessing that's incorrect? 80lb/hr equates to roughly 10.0798 g/s. I have a boost referenced regulator set to 43.5 PSI (3bar)... my injectors are rated at 80lb/hr at 3bar so I have my B4001 table set to 10.117188 across the board based on Greg's data. Is that number going to exceed the PCM limits? HELP! lol. What do I need to do? I've searched everywhere and can't find solid information regarding my concern. Any help someone can provide would sure be appreciated.

Brad

 

HP Tuners has the IFR limit for the 99-02 pcms as 254.0 lb/hr or 32 g/sec and will not allow a larger number than those to be entered. I think you are confusing the IFR limit of the 05-06 E40 pcms which is 63.5 lb/hr or 8.0 g/sec.

 

I think you may be right. What a relief. Here I was thinking I may have wasted a few good VE tuning attempts. Thank you for responding and helping clear my head. I appreciate it!

 

What are the e40 pcm guys doing for bigger injectors then?

 

You just scale the IFR table and all the other tables that airflow affects to get around the IFR limit.