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Old Wed, May-15-2019, 05:21:54 PM   #21
Turb02
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Default Re: Global Fuel Factor: Definitive & Final Guide to Calbrating MSS54 for Larger Injec

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Originally Posted by tr4ck_m3 View Post
I believe ESS uses 3.5 bar for their 630cc injectors?

So effectively 630cc at 3.5 bar gets converted to 527.1 @ 5 bar.
for easier comparision against stock using hassan's equation.
How do you get this conversion?

Currently my car has 39lb (410cc) Ford injectors. At 5bar, what would that convert to?

The ID1050x that I have on hand, based on the websites chart, at 70psi (approx 5bar) is 1350cc

So I guess Im confused why some numbers are converting to a higher CC with more pressure, and some actually lose CCs.

Still trying to learn this stuff.
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Old Wed, May-15-2019, 05:37:09 PM   #22
tr4ck_m3
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Default Re: Global Fuel Factor: Definitive & Final Guide to Calbrating MSS54 for Larger Injec

I'm just converting 630cc @ 3.5bar to what it would flow cc-wise at 5 bar to make the conversion easier.

630 cc flowing at 5 bar would be 630 cc

630 cc flowing at 3.5 bar (ESS Aftermarket) would be equivalent to 527.1cc @ 5 bar.


technically, most tuners for other cars just put in the injector latency profiles and call it a day. Not sure if that strategy has been discussed or mentioned.


Quote:
Originally Posted by Turb02 View Post
How do you get this conversion?

Currently my car has 39lb (410cc) Ford injectors. At 5bar, what would that convert to?

The ID1050x that I have on hand, based on the websites chart, at 70psi (approx 5bar) is 1350cc

So I guess Im confused why some numbers are converting to a higher CC with more pressure, and some actually lose CCs.

Still trying to learn this stuff.
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Last edited by tr4ck_m3; Wed, May-15-2019 at 05:41:04 PM.
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Old Wed, May-15-2019, 06:59:59 PM   #23
Turb02
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Default Re: Global Fuel Factor: Definitive & Final Guide to Calbrating MSS54 for Larger Injec

Quote:
Originally Posted by tr4ck_m3 View Post
I'm just converting 630cc @ 3.5bar to what it would flow cc-wise at 5 bar to make the conversion easier.

630 cc flowing at 5 bar would be 630 cc

630 cc flowing at 3.5 bar (ESS Aftermarket) would be equivalent to 527.1cc @ 5 bar.


technically, most tuners for other cars just put in the injector latency profiles and call it a day. Not sure if that strategy has been discussed or mentioned.
Thanks for the assistance.

For anyone needing to calculate this out for their injectors, I found this calculator that helped me determine my 410CC injectors @ 5bar flow 529CC, and will flow 1356CC on my 1050s (as posted on the Injector Dynamic page)

https://www.raceworks.com.au/calcula...fuel-pressure/
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Old Thu, May-16-2019, 07:22:42 AM   #24
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Default Re: Global Fuel Factor: Definitive & Final Guide to Calbrating MSS54 for Larger Injec

I've never seen a tune where injector latency or dead time has been changed.

According to the specs of the Siemens Deka 630cc, they are rated for 630cc @ 3 bar, or 900cc at 6 bar. Which would make them *roughly* 673cc at 3.5 bar?
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Discussing Global Fuel Factor: Definitive & Final Guide to Calbrating MSS54 for Larger Injectors in the Coding and Tuning Forum - Discuss all avenues of coding and tuning here! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)