brad8266

iTrader: (23)

I just used the IFR spreadsheet thats in the sticky. The values in the sheet go from 0-80 Kpa and the values go upward. My IFR table starts out at 100Kpa and goes down to 0. Why is it *** backward and what can i do to properly scale for 42lb injectors. I am right now. Attached is a screen shot of my IFR table in LS1 Edit. How the hell am i going to scale this right in my goofy table?

I need to get some new ******* software and flash a SD OS.

foff667

iTrader: (2)

might just be how edit sets up their table view...just a matter of using the spreadsheet but switching it round for your use. Odd that it starts at 100kpa though :shrug:

SSpdDmon

iTrader: (10)

Assuming your 42lbers are rated at 40psi and your fuel pressure is 58psi, you need to scale your injector table up 91% across the board over the stock values. 80kPa on manifold vacuum (~21kPa on MAP) should be close to 6.98grams/second. If they're rated at 43.5psi, then you would only scale up ~83.5%.

It's hard to tell if LS1 Edit refers the injectors against manifold vacuum or MAP. Just so you know, MAP equals atmosphere (current Baro) minus manifold vacuum. Either way, a straight %-age increase should work fine.

ChrisS@sdpc

Don't know what version you have. IIRC, LS1Edit had the IFR table 'backwards' at one point. I thought they changed the table to be vacuum referenced.

brad8266

iTrader: (23)

the table is MAP referenced, it just starts out with 100Kpa but the Gms/sec starts out low. I think the cells are just backwards. Take a look at the screenshot I attached above and you will see what I mean.

the injectors are 42 lbs @ 3 bar

SSpdDmon

iTrader: (10)

I'd up the values by 83.5% across the board then. The 0kPa cell in the spreadsheet should roughly match the 100kPa cell in LS1 Edit. If you calculate the difference between what the spreadsheet outputs and the stock values, they should be (using 43.5psi) a linear change of 83~84% higher than stock.

brad8266

iTrader: (23)

Thanks man. I just scaled them 83.5% higher. I still cant wait to flash a SD OS sometime very soon.

SSpdDmon

iTrader: (10)

No problem...