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Zetec Map anyone?
coozer - 8/2/10 at 09:35 PM

Can anyone post a working 2L zetec MS map please?

Just want to double check my settings as 9.8afr at idle is a bit wrong

I've found lowering the fuel pressure to 2 bar improves the engine running (a lot smoother) but the afr doesn't improve.

TB's are balanced now, will a timing check and comparative setup improve things? IE: is it vital??

Ta,
Steve

flak monkey - 8/2/10 at 09:42 PM

This is from the extra efi base maps, so do check through it....

Both of these are MS1

Speed density first

flak monkey - 8/2/10 at 09:42 PM

And alpha N

jeffw - 8/2/10 at 10:16 PM

MS1 on Jenveys ?

fatbaldbloke - 8/2/10 at 10:54 PM

quote:

Just want to double check my settings as 9.8afr at idle is a bit wrong


I wouldn't get too hung up about AFR at idle, you need to adjust the fuelling to get a good idle not an AFR number. It's not uncommon with ITB's for it to appear quite rich on a wideband sensor, around 11.5-12 isn't unusual.

However, reducing the fuel pressure to 2 bar is unlikely to be part of the correct solution. Pressure should be 3 bar to get the correct atomisation and then the fuelling adjusted using the VE map.

[Edited on 8/2/10 by fatbaldbloke]

coozer - 8/2/10 at 10:59 PM

Thanks David, FBB,

My injectors are 315cc (ST170).
Should I calculate the req-fuel based on injector size with a afr of 13.5 then generate a ve table to match?

Me's thinking the injectors are too big for the base line on ve of current 54 value at idle. Am I correct?

Steve

[Edited on 8/2/10 by coozer]

flak monkey - 9/2/10 at 07:14 AM

I assume you are running alpha_n and not speed density?

If not, change to alpha_n now and save yourself some hassle down the road.

A ve value of 54 sounds high for an idle figure and if your AFR is that low then I would think about reducing the VE figure to around 40 at a starting point.

What is your req fuel set on? I reckon it should be around 9 or 10 for those sized injectors...

fatbaldbloke - 9/2/10 at 11:42 AM

I'm running 220-240 cc injectors, GSXR600's, req fuel at 7 and VE map at idle around 35. (That's with injections per engine cycle set at 2 and alternate injector staging).

On MS1 the req fuel calculator for a typical ITB set up seems to recommend around double what is actually required, so if your setting came from the calculator, halve it and try again.

Plus, as said before, go for AlphaN now and don't waste your time with speed-density (waits for someone to say SD is fine so long as you have 3 orifices, an accumulator, and a fuel filter in your MAP sensor line...)

There's quite a lot of stuff about setting up the MS1 on my website as well.



[Edited on 9/2/10 by fatbaldbloke]

matt_gsxr - 9/2/10 at 02:51 PM

If you have big injectors then it might be worth using the "high resolution" code.

It allow the controlled to adjust the fuel pulse widths a lot more precisely with no disadvantage on most installs. The only limit is that you cannot use the PWM features which are needed for low impedance (i.e. 3Ohm) injectors.

Just a thought,

Matt

flak monkey - 9/2/10 at 03:07 PM

He is running MS2 by the looks of his other post, so its already better than HR code for MS1

So the maps I posted above wont work....

coozer - 9/2/10 at 04:16 PM

Thanks for the guidence mates, I'm running MS2 extra with alpha_n.

I've recalculated the req-fuel at 10.6 for my injectors and generated a new fuel table.

Its running a lot better now and idling quite stable and not killing me with fumes!

I'm struggling to calibrate my LC1 in though so ignore the O2 readings here. My on dash gauge is showing 16 atm.

Heres a real time mpeg of the current state, revving it now it coughs and backfires flames out the exhaust, thats the next step me thinks! Rescued attachment MS Tune.jpg
Rescued attachment MS Tune.jpg

coozer - 9/2/10 at 04:18 PM

And the latest fuel table.... Rescued attachment MS VE Table.jpg
Rescued attachment MS VE Table.jpg

flak monkey - 9/2/10 at 04:24 PM

Is your LC1 set to factory default and you are using the right output i.e the 0-5v one?

If so it should be as simple as selecting it in configurator and in the lambda setting page.

David

PS use tuner studio rather than megatune, its much nicer to use and has live tune etc all built in.

coozer - 9/2/10 at 07:13 PM

LC 1 is wired as it says in the megamanual. Its connected to aux output 2 (yellow wire) which I know replicates a narrow band with a 1v range. The manual says this is ok and just to select the Innovate default in the afr calibrator... however as you can see it does not work.

I want to keep the dash gauge as a comparator and program the LC to output 5v but I cannot get the laptop to communicate with the LC 1. Common problem I believe which I am waiting on a usb/serial converter to see if that works. Otherwise I will be rewiring the damn thing.

And yes, I will give Tuner Studio a bash.

Thanks David,
Steve

flak monkey - 9/2/10 at 08:19 PM

Yes you can reprogram both outputs to be 0-5v wideband outputs. I use the same usb-serial adaptor i use on the MS to set up the LC1.

Also make sure you have the bung in the other serial lead on the LC1. And contrary to logic you have to connect the laptop to the 'output' connection to program it...

If you are currently on the narrowband thats why its not reading properly in MS anyway