It's like working out the price before VAT .....7/47ths etc

by **clee** » Mon Sep 29, 2008 4:19 pm

I need to alter the figures for fueling the Adaptronic .Going from 214cc to 330cc .This involves putting in a subtract % figure across the graph .My brain is not working so can someone please do the maff ?
I have a -% figure to subtract but I'm not saying what it is :wink:

Please quote your figure and I'll take a mean average :lol:

by **simonsays74** » Mon Sep 29, 2008 4:26 pm

by **clee** » Mon Sep 29, 2008 4:37 pm

Ahhh No , it's good but it's not right ....

by **simonsays74** » Mon Sep 29, 2008 4:41 pm

0.002%??

must be close now!

by **clee** » Mon Sep 29, 2008 5:16 pm

It's either -55% or -65% I'm confusuled and been in the pub :lol:

by **Stunned Monkey** » Mon Sep 29, 2008 5:59 pm

bit of algy-bra

337x = 214

x = 214/337
x= 0.635

To deliver the same amount of fuel, a 337cc injector opens for 63.5% of the duty of a 214

However, when starting with the 214 map, you need to multiply by 0.635 which is the same as reducing it by 36.5%

If you think about it, it makes sense, you need to drop it by "about a third".

This doesn't take into account the injector on and off times, but the result will close enough to be safe to work with.

I see where you were going with the 55%/45% - you started with 214x = 337 - but you're talking about reducing your map by around half - that isn't right...