Karlos G

iTrader: (4)

lol Yes on MFI!!!
Morph if you have had your car setup by someone who knows what they are doing then yes you have mate!
They adjust the fuel pressure by a 3mm allen key in the side of the EMFPA, and to set the ignition timing they twist the Distributor!
The timing is advanced until the point of Det then backed off a little and the full load WOT AFR is set to around 11.8:1

What do you think you are paying them to do??

milesy23rst

iTrader: (16)

karlos is this needed to be done on a rolling road to do it properly m8??

Karlos G

iTrader: (4)

No mate you can take a Wideband Lambda and some Det Cans out with you and do it on the road, but you'll need to be able to get up to the limiter in 3rd somewhere which is about 90mph IIRC, so it's easier and safer on a RR.
Also you'll have to keep pulling over to make adjustments which is a pain too!

T28 RST

More uneducated pish posted from Morph i see

milesy23rst

iTrader: (16)

I always have mine set up by woodford garage i adjust my boost and james always sorts my fuelling, timing etc when i take it to be set up every 6 months or after i do any significant mods to it, is this ok??? or not the way to do it???

Karlos G

iTrader: (4)

Well you shouldnt turn your boost up if the fuelling is not also turned up and the engine checked for Det at the same time.
If your increasing the boost then driving slowly to your setup that is sort of ok, but you must of driven on boost at some point to know that your adjustment has had the desired effect.
Bottom line is increasing boost yourself is just a recipe for a melted engine as you'll be lean and/or detonating.
Other mods like FMIC's, Cams, Porting, etc... are less likely to do as much damage but still require the basic fuelling/Det check to be 100% safe and to get the most from your new mods, as they all alter the way the engine breathes..... hopefully getting more air into your chambers for more power!

milesy23rst

iTrader: (16)

Yes m8 i know that obviously upping the boost the fuelling has to be adjusted too, to avoid the dreaded detonation!!! when i adjust my boost last time i drove off boost the 5 miles to have the fuelling and timing adjusted etc, what i mean is does all of what you have been saying have to be done on a rolling road???

JamboRS

as long as its monitored then road or RR will do,on the rollers its easier to make adjustments and prob easier to monitor.

i always say set up on the rollers then road tested is best just to check

milesy23rst

iTrader: (16)

Thank you karlos and jambo, much appreciated, it seems as though the 13 rst's i have had, 2 fiestas set up on alan jeffreys rolling road (very poorly i may add) and 1 escort (also done poorly) but always (since) have them done by woodford and have never had a problem maybe its because i am an old man at 38 lol and drive like a grandad (most of the time) but when i get my next rst i think a trip to either karl or jano is in order, thanks again.

Rob_DOHC

iTrader: (4)

Every rr i have ever seen uses a wb lambda to monitor mixture, you might not see them do it as they just shove the probe up the exhaust when they do it.

and morph if luke set up your car then it would have been done with a probe......

Rob,

morph

iTrader: (1)

this is exactly what i am trying to point out no need for a rolling road!
most tuners can adjust settings either on road as mfi is non adjustable underload.
same as ignition can't be underload.

morph

iTrader: (1)

Yes i thought that probe is justa gas analyser didn't know that was a wideband lamda.

morph

iTrader: (1)

And how long do you think that after spending a fair amount of money just having rolling road setup for mfi will it still be in sync? a month? a week?
i have had 3 setups from SCC - no rolling road used there on mfi, Jano x 2 no rolling road required there both tuners did a spot on job.

morph

iTrader: (1)

Your starting you crap off again? how small did i make you you look before? when you kept going on about prove it, and then coming out with your foolish remarks?
didn't see you say a word once i posted up my pics.
here's the link just to remind you!
https://passionford.com/forum/pictur...urbo-s2-4.html
about half way down the page!
Any garage with a analyser can set the co idle on mfi to its desired figure
and adjust the igntion.
ok they can't check the boost accuratly or the underlaod fueling.

NOW GROW UP!

Rob_DOHC

iTrader: (4)

Yes mate, thats the problem, what use is setting the co at idle? apart from MOT.

The only place you want to rely on mixture being correct or rich in mfi's case is on boost and @ high rpm ie) under load.

As said you don't need a RR to set up ANY car, but it damn helps. EFI is nice and easy to set up on the road as you can make adjustments on the move, these days most mappable cars will have a wb fitted. you can't do this with mfi.

True you cannot adjust mfi under load, thats why most tuners with an rr will do several runs, the first run will always be a gentle one looking for fueling problems and det, the second will be more violent again looking at fueling and for det and after the car has been fettled the car will be given full load. After the tuner is happy about fueling and boost the same process will begin with timing.

adjust the timing (advance it) run the car listen for det, if they hear any they will abort the run, retard the timing and do it again.

This approach will get the best and most reliable results on mfi, end of. of course you can do this on the road but usually only with det cans unless your tunner fits a wb lambda first.

So in effect a good set up should be on a rr.

Rob,

Rob_DOHC

iTrader: (4)

you can use a gas analyser to look for lambda 1 or what ever you want to aim for.

morph

iTrader: (1)

Fair play, does seem that rolling roading a mfi setup is better.

xr2wishy

iTrader: (2)

rolling road tuning is better for making changes without having to pull over and get some tools out every run.
live tuning on the roads is a more accurate method of test under real conditions.
personally i'd get it on the rollers first then fine tweeking after on the road.
eitherway a wideband setup is pretty much essential to keep check on the fuel mixture be that on a 6 gas analyser or a standalone setup fitted to a car.

Rob_DOHC

iTrader: (4)

xr2 that sound spot on, however its just not practical live mapping mfi, its always good practice to do an on the road check especially if you have a wb lambda.

Rob,

xr2wishy

iTrader: (2)

not really mapping as such with mfi though, you've got idle fuelling and boost fuelling to setup, pretty easy to say the least.
it's always best to go for a drive nd see how it runs after it's been setup for power/reliability on the rollers.
i have live mapped my MS, but i think to get the top end fuelling on boost done, i'll be borrowing a set of rollers for a couple of hours, as WOT on the road in fourth isn't ideal really.