..

 

what does that mean?

 

Nothing. Just wrote something that I later thought wasn't correct.

 

So,

(Red top nb1) 240cc / 1000cc * 12.7 (from base map) = 3 (3.04) new req_fuel?

 

old injector / new injector * req_fuel

Existing req_fuel = 12.7
old = 240
new = 1000
old/new = 0.24
0.24 * 12.7 = 3.048 or 3.05.

So, yes. 3.05 for your req_fuel.
This will leave your existing VE table "close" with the new injectors.

I'm guessing you'll want to VEAL for a bit again, though I've never sized up injectors with an aftermarket ECU before.

 

The above gets you going with new injectors. After you've tuned a bit, you can follow my procedure to find a better "Req Fuel" and get more resolution out of your VE table.

 

If you know the dead time for the new injectors, key that in as well. If these are ID injectors, I understand they are supplied with low pulse corrections. That's the least important, but you can research that if you do have the information.

 

I just redid my VE tables, following Hornet's advice and wow... between that and switching over to sequential injection, the car car feels much smoother now.

Time to go VEAL for a bit and take more advantage of this!

 

I know this is an old thread and sorry if this is frowned upon but I had a question about the calculation. I too have moved to 1000cc injectors but do you do the calculation with the nb fuel pressure. What I mean is that I bought fuel injector clinic 1000cc injectors that are actually tested at about 969 at 3 bar. At 4 bar which I believe the nb fuel pressure is it shows the flow is 1118 so based on the megasquirt base map do I do old injector/ new injector flow rate at 4 bar and then times it by my base map requires fuel or just use the size flow at 3 bar which is 969?

 

use the flow rates at 60psi.