Quagmire

I have the old rounded style on my injected Rover P6, all works swimmingly.

Am posting from phone so forgive any typos. Fatboy- you have auto tune ("ve analyse" or "veal" for short) confused with the exhaust gas oxygen control, they are slightly different things. Veal is for tuning your ve table and homing in on values that allow you to hit the target AFR you have set. A couple of things to note about tuning with veal: The ve table is the fuel needed at steady state conditions, when tuning try to move into an area of table and hold it there for a few seconds. this can mean holding onto gears longer than usual, driving at 10mph in 5th or other generally weird driving to achieve this. Try to always tune at the same ambient air temp. If you don't you will find it changes the table every time and you end up chasing your tail. Get it dialled in at one air temp,and then alter the other corrections (I forget what they are in ms1 for now) to get decent correlation at others temps. Don't tune with a leaky exhaust (as fridge said) and don't tune in torrential rain. Be aware that too much fuel can read as too little. A misfire will cause a lean reading as the oxygen in that combustion event didn't get burned and gets seen by the sensor. Use what your lambda is telling you combined with what your nose says. Ego control is to be used when you are happy with your ve table and have finished using ve analyse. The job of ego control is to "trim" the fuel settings on the fly to keep it in line with your afr targets. Settings made by ego control are not permanent and it doesn't change the ve table. With a tuned ve table, and decent air temp corrections you should find that ego control only adds or subtracts a couple of percent of fuel when driving. For now I'd disable ego control by setting authority to zero and just get the veal tuning sorted. Easier said than done with the temperatures we are having at the mo!

Megalogviewer used to do it in the free version, I think now it will only do the first 5000 records of a log unless you get the paid version.

1. I just checked my MsDroid dash and I use the field "Air:Fuel Ratio 1" I guess the field is defined by the ms coding and so should be the same in Tunerstudio, someone will need to confirm or I can look when I get home. 2. Do you mean a generally high voltage ? I.e it's higher than you expect? If so that could be a voltage offset caused by your wiring scheme. If you trust that you have no offset and are asking what a high reading means, then generally higher voltage equals leaner reading 3. If you right click the gauge there is a menu for changing gauge limits. Here you can define when it goes red. If you have the paid version you can also customise pretty much everything about each gauge which is nice! *Edit- point 2: are you using narrowband? Most widebands are along the lines of 0v = 10:1 and 5v= 20:1 If you are using a narrowband sensor then basically all it will tell you is 0.5v is stoich, I think the voltage output is the other way about on these? I.e. lower volts equals leaner? Again someone (Bowie, help!?!) Can confirm...

Ms1 stuff here: http://www.msextra.com/doc/ms1extra/MS_Extra_Tuning_Manual.htm

Spartan2 doesn't need free air calibration, as it uses the later LSU 4.9 sensor, instead of the 4.2 sensor. You do however need to check for voltage offsets as per Cheesy's post above to make sure that the voltages MS sees match what it is expecting see.

Mines in the boot! Works perfick, but is a bother when doing the cable runs... I use Bluetooth though, so no serial cable worries

Could you turn the plenum around?

I had big plans for this on my 90, using the peak and hold boards from jbperf.com and switching feeds over between the two sets of injectors with a relay. No need for any pwm from the MS itself, the boards do it automatically. Unfortunately I never got around to doing it!

Apologies for the bad web address, was posting from my phone :s

What does it smell like? A narrowband won't tell you much other than whether its rich or its lean. From your photo the vacuum reading is pretty low, though that may be to do with it running badly. Pulsewidth of 4.7ms at idle seems pretty high- with normal injectors it would be high enough! That's near double what my 3.5 uses with Vauxhall injectors. I'd be inclined to remove fuel from idle to get it showing something. Just pull fuel and listen to it- if it's mega rich then you should find the idle speed increases as you lean it out, keep going until idle speed starts to drop again and then add a bit of fuel back in. If idle drops immediately as you lean then it was too lean to start with, so go back the other way... With a happy idle I'd then take a smidge of fuel from most of the rest of the table and take it for a run, then another smidge and keep going until you get the NB sensor seeing something useful. What i'd really do though is fit a wideband- Spartan2 from 14point.com is excellent and I have fitted two now, one to my 90, one to my Dad's 110. No connection other than happy customer....

Another thumbs down here. Same show, just slightly worse than before. Even the studio set was the same!

From your post it sounds like you have ms2 or ms3? Dont think ms1 has specific a specific idle advance dialogue.

try having a look at this: http://www.msextra.com/doc/ms1extra/MS_Extra_Tuning_Manual.htm#constants

Length doesn't seem to effect things (oooerr), on my P6 the ECU is in the boot and has about a 4 metre run! On the 90 the ECU is behind the passenger seat on the bulkhead so probably a similar length run to what you have... The 90 is using washer pipe, the p6 has some small diameter nylon stuff. When you say the "req_fuel table" do you mean the calculator thing in Tunerstudio? Just you have stated two values when req_fuel is just one, which makes me think you may be in the wrong place. Making progress though, Keep going!

Fridge beat me to it!

Ok, couple of things- your MAP reading should be something less than 99kPa with the engine running. My 90 idles at 800 rpm and shows 30kPa, my Rover P6 idles at 650rpm and reads 40kPa. A good test is to stick a syringe on the map line and push/pull the plunger and see if changes are displayed on the screen (engine off, key on for this). Secondly, my idle pulsewidths are around 2ms- yours are four times higher! Check your req_fuel value and if that is correct (around 15 I think?) Then bump the values down in the VE table to lean it out a bit.

I have MS1 on my 90 running hr_11d code, and MS2 on my Rover P6 both using v3 boards - I have to say that I like the MS2 a lot better. Being able to drive the stock stepper is a big bonus for a start... The "Incorporate AFR" setting is also very handy - saves you endlessly retuning your VE table every time you want to try an AFR change. The 90 will be getting an upgrade to MS2 when time and funds allow.

Here's a good example: http://retrorides.proboards.com/thread/175854/1982-rover-series-station-wagon

I had a judder from the drivetrain that was (seemingly) cured with a new spigot bush.

Yeah, that's a valid point- we wrote an extensive checklist prior to the window of work almost walking through the whole job mentally. From this we then tried to find all the bits that had got scattered everywhere and compiled a list of bits that were required to complete the vehiclr and ordered them online. Even doing this there were still a few unexpected bits that were needed! Splitting time off into a couple of chunks with time for parts deliveries between could be a way forward.

My youngest brother was in a similar situation, years ago his series 3 came apart for a new chassis and only partially went back together... Recently he took a week and a half off work to get it back together and myself and my Dad pitched in as much as we could. It got its MOT pass about two weeks ago. That's the first one it's had for 14 years! Time did run away a bit on that one...

As fridge says, anything will work as long as the flowrate is similar and the injector body dimensions are the same... I have Vauxhall injectors on my 3.5!

Hey! That's my engine! Or that's what it used to look like anyway. It's injected now and has been for some time...

I have successfully done 4 this way, for ms1 and ms2: http://omgpham.com/bluetooth-x-megasquirt