Req fuel calculator gives 19.5ms (instead of 9.5ms)
 

I have the car up and running - actually runs amazingly well, however I went back in to check the "Req fuel" value to help a buddy out and noticed that when i run my configuration through the built-in calculator (click "Required Fuel..." button), it returns a value of 19.5, versus the 9.5 that I have in there from Aaron's tutorial. Most other references I see on the forums are also around 8-10ms.

https://www.rx7club.com/attachment.p...1&d=1405901536

Control algorithm: Speed Density
Squirts Per Engine Cycle: 2
Injector Staging: Alternating
Engine Stroke/Rotary: Rotary
No. Cylanders/Rotors: 2

Number of Injectors: 2
Engine Type: Even Fire
Engine Size(cc): 2600
Injector Size Each(cc): 460

Main Fuel Outputs: MS3x fuel
Sequential On: Fully Sequential
Angle Specifies: End of squirt
Injector Trim: Off

A: 1
B: 3

I'm going to play around with the 19.5ms value today, see what sort of changes it makes to the tune, but definitely keeping the current tune saved in case it messes everything up.

Anyone else have any thoughts or experience on the subject?

Hi Geoff

I'm thinking I've heard that you put 1300 in the Engine Size(cc) section IF your running the newest firmware/tunerstudio.

a regular 2 rotor is 1308 CC.

Interesting. Aaron's tutorial specifically says 2600. Where did you guys get that info about the new firmware?

When i put 1308 through the calculation it definitely returns 9.5, so its correct for sure. Thanks! I'll send Aaron a note to update his tutorial.

~Geoff

The firmware changed while I was writing the instructions.

But it's only an issue if you use the VE calculator. If you just type in the numbers I've provided then it works.

At some point I'll update the writeup but with 1.4 firmware looming, I will likely wait until it is released. Well, I could use prerelease firmware but that's rarely a good idea.

Yup, I noticed no difference in my tune when I changed it from 2600 to 1300. Noticed a HUGE diff when I changed from 9.5 to 19 req fuel tho... Haha! :)