oh that is his home number as hes always at work, no point him having a phone at work, rumor has it he's missus rents his house out during the summer to tourists, he aint noticed yet excempt that the washing up seems to get done

 

LOL he's got a bed in the office

 

bttt

 

if we are too understand transient fuel correction first we much understamd the meaning

transient means to change, what is changing-throttle angle
fuel correction,, this must mean it is a correction factor too which the ecu is doing too the main fuel look up table

air is a mass,,, which takes time too accurate, from rest at a closed throttle plate too when it is opened too the combustion chamber! what would happen if we didnt have a correction and it justed looked at the main look up table? yes we would run rich as most of the air is still accurating towards the chamber!

the larger in inlet volume the larger the accuration positive gain needs too be

 

more explanation now this effects me

 

i thought it was something to do with different loads, but at same tps, revs and boost?

 

is this something that is fixed dependant on ECU, L1, L6 or L8 and is something that marelli set, or is it something that can be easily changed in the map to take account of different turbo sizes, throttle bodies, inlet plenums, intercooler volumes, head porting etc?

 

[IMG:658:343:f0f73090a7]http://img.photobucket.com/albums/0803/gareth_esccos/tfc.jpg[/img:f0f73090a7]

its user programable mate, here is the options on a L8



i would post the options from a t6,, but theres a few windows of it lol

 

what exactly are we looking at?
why are they all zero, is it not finished?
interesting

 

Not finished or crap mapping... either or.

 

that's what i thought.
so what do all the names relate to?

why is there no such thing as delta map positive/negative decay

what's the difference between say, positive decay and negative gain?
throttle plate position?

why the need for both slow and fast corrections?

cheers

 

i did it does have some juddering (not my map)


the original

im nto good at explaining things at all,,,, get hold of descpro (pectel calibration software) go into transient fuel correction maps, and press f1 on all the subjects

 

A tuner i was speaking to recently told me that 'the secret is using a 36-1 wheel on the crank which allows us to get the transient fuelling spot on'
i can see that it might conceivably help a little, as opposed to a 4-tooth wheel, but surely there's a lot more to it than that, i.e. the ecu parameters as mentioned above.. ??

 

ok, so we've established that it can be changed relatively easily with the right software, but why would you need to change it?

is it just to make driveability better with different sized injectors, or more to do with engine spec?

 

both

 

sorry its about drivablity,, the correct only effects changes in throttle angle, once this change has taken place, and a set time has elapsed tfc isnt doing anything

if the engine can gobble more air than it did before TFC needs to be adjusted (maybe by a very small amount that most wont notice)