Ferm's balance rate formula

[WVRigrat05]

Ferm's balance formula question

I can't figure out how to figure this up. Checked my stuff cold and hot, in park and in drive.

So here's my cold info on tune 4
Main inj timing park +3.0 drv +2.8
Main 1q_m 11-13 park, 18.7-19.8 drv

Truck was loping in drive
Balance rates
Park. Drive
1 -1.5. -1.4
2 -.4. -.4
3 +2.6. +2.5
4 +.4. 0.0
5 -.4. +.6
6 +.7. +.6
7 -.3. +.4
8 -1.0. -1.3

 

[WVRigrat05]

Hot on stock tune

Main 1q_m p- 10.6-12.1 drv-15.6-17.1
Main inj timing p- -2.2 drv- -1.9

Balance rates-

Park/drive
1 -.9 -1.1
2 -1.3 -1.5
3 +2.4 +2.7
4 +1.1 +1.5
5 -.8 -.9
6 +.5 +.5
7 -.3 -.3
8 -.8 -1.0

For cold comparison Balance rates were the same on tune 4 and
Main q1_m was 11-12.8 park and 15-17 drv
Main inj timing was -2.4 park and -2.1 in drive

 

[cstephens93]

What did you log this with?

V2 or Edge Insight CTS?

 

[WVRigrat05]

Autocal

 

[THEFERMANATOR]

My corrected formula ONLY works for stock tunes with stock fueling tables. And like I've always said, it's just a diagnostic aid to help get a better idea for whats goi,g on, it is by no means a definitive end all be all test for injectors or engine health. If your engine is running fine, then I wouldn't worry to much about it.

 

[WVRigrat05]

10-4, my stock tune is a 40 hp tune, and is considerably louder than the rest, always has but anyhow, my truck has been hazing a lot and rattles from time to time, is the main 1q_t higher than normal?

 

[c20elephant]

My corrected formula ONLY works for stock tunes with stock fueling tables. And like I've always said, it's just a diagnostic aid to help get a better idea for whats goi,g on, it is by no means a definitive end all be all test for injectors or engine health. If your engine is running fine, then I wouldn't worry to much about it.

Ferman, most over look the requirement of stock tune and fueling tables when checking rates....:thumb: Most don't have a stock tune in there DSP5 tunes.

The tune you did for me several years ago does have the stock tune in the 1 position and my rates only changed when I installed a higher output at idle alternator just recently and for the better....

 

[WVRigrat05]

So I need to get a 100%.stock, delete only tune to save to my files for testing.

 

[S Phinney]

As long as the fueling rate of your modified tune is in line with what a stock tune would normally run you will get the correct information. Some guys tunes do not run consistent with a stock fueling rate at idle. Not all guys tune are like that.


Sent from my iPhone using Tapatalk

 

[WVRigrat05]

My stuff changed a fair bit between tune 1. I'll get ahold of kory and see what I've got.

 

[THEFERMANATOR]

Also pf note, it only works with stock injectors. Once you go oversize, all bets are off. I keep bone stock fueling in my tune for the most part for anything under 20mm3 of fuel and 50 mpa of pressure.

 

[WVRigrat05]

My fuel system is 100% stock

 

[cstephens93]

So is it main injection timing or main injection fuel rate that youre supposed to use?

 

[NC-smokinlmm]

Rate..

Reger, I have a stock tune from my old lmm if you want it. Do you know your OS? I also have a bunch of others that I pulled tuning trucks...

 

[WVRigrat05]

I can find out what my os is.... I think. I'm on my way to an ultrasound I'll look it up when I get back in a couple hours.