MicroSquirt.com read only forum (Jan.15,2018)

i have a 1900cc turbo ms v2.2 msns-e mt2.25 beta with nb 02 sensor and 350cc hi impadence injectors and have req fuel set but im having problems im haveing to put hi ve numbers like 70 at idle and incressing to 110 at 2k rpm at 60 kpa and so on still having missfires i have seen other ve tables for boosted engines and mine seems 2 be xstream any thoughts would be most helpfull thanks in advance

Hello.


Basicall ve table multiplies 'FuelREQ' value for calculations. If your ve values are too high... go back and incerase your your fuel req, bu say 40%, then scale whole table by the same so the ratio is constant but actual ve values will be 40% smaller... or 50% or whatever you want to set it to

hi thanks for ur reply but do i change the req fuel in constants or tables/ve 1/tools/req fuel and do i change req fuel back

steve

Change it in the constants. What is your req_fuel set to? I'm using 780cc injectors on a 2000cc engine. REQ_FUEL is 7ms and idle VE is about 14%. The actual idle pulse width is about 1.6ms

im using 358.9cc hi z on 1900cc turbo engine and req fuel is 8.8

i am having the same problem too...my car is 2000cc and i am running 8 220cc injectors and my numbers are very close to yours....did the changes fix the problem

i didnt understand it i tryed but when i scaled it went all 2 f**k if u have any joy let me know how u get on and u can tell me thanks


steve

but did the number decrease or did they increase?
i will give it a try today and keep u informed

when i tryed it my ve table was eratic hi and lo points all over

The VE entries can go up to 255. If you need numbers over 255 then up the req fuel value and rescale the VE table. How to do that is covered in the tuning section of the manual

Ian.