MSefi.com read only forum (Jan.15,2018)

Hi,

I start "thinking" as a driver of a big 4x4, which needs torque at low revs and needn´t be able to be chased on laps.
If I changed the camshaft for one which promises more power and torque then I will get one, whith a longer duration. So the cam lobe will be longer - and the valve been opened ...

yes, that´s what I ment. The sensor itself is made by Bosch (the ones I get usually have about 1.5ft of cable). But while the LC-1 does not come with an extension and therefore I had to put mine into the engine bay (not questioning whether there were optional means of mounting it remotely, or not ...

Hi,

maybe this controller could be mentioned in this context. I just happened to order one on ebay. There are some reviews on the MS-Forum. So one could draw his/hers own conclusions from that.

It has a 8ft sensor harness/cable. (together with a gauge built in).

http://www.14point7.com/SLC-Pure ...

Hi,

not sure if it really is of any help, but I have recently read (when ordering a LSU4.2 sond from ebay) that they come in different cable lengths. What we usually get is about 0.5m. I have seen a .pdf (google found it for me) with the LSU 4.2 specification data and in the very end of it they ...

Hi,

1) I asked elsewhere and have learnt that one ASE cycle is finished after 2 crankshaft revolutions. So at 600Rpm with 300cycles that would mean 1minute of enrichment. Isn´t that true ??

2) the biggest number I could dial in would be "999" I guess ? (which looks plenty anough for me)

3) how ...

Hi,

I make progress in tuning the warm-up. Which is much more demanding than hotstart and enigne-running. As I do a lot of short distance driving and many cold starts please excuse me for stirring up something obvious to others. I bother about too much enrichments and dilution of oil and adverse ...

Hi zerofloat,

thanks a lot - being grateful for every piece of input !

Hi,

I have knocksense on my Rover V8. I´ve gotten used to it detecting knock above 3000Rpm regularly - even though AFR and Advance are very similar to those of other users. So probably that is just noise. While the instructions recommend to turn the tune-resistor 15-20° away from that ...

if you know the general principles, the tuning process should be more straightforward.

http://www.offroad-forum.de/images/smiles/ec_55.gif that´s what forces me into asking and asking and ..

So then I was caught by the whole calculation being valid for WOT only. That explains something ...

thanks again!
now that´s very concrete and detailed stuff in that link. And challenging to me (math´s never been my strong point).
I do not get to a valid result with the degree of crank-revolution @ given time. Well, I do but it´s frightening:


For example:

-at 14.7AFR flame speed is ...

when the normally burning fuel after a spark compresses and heats the unburned fuel, causing the remaining fuel to spontaneously ignite.

Hi Lance, you´ll soon put me right :) But isn´t that what happens each time after a spark plug fired. The ignited fuel burns and expands, same time ...

Hi,

just looked for .. and found the option in MT. Unter tools there´s a way to re-set the ReqFuel and with just typing in a new value and clicking ok all is done.

Now that I´ve changed ReqFuel from 18 to 15 -> I´ve same time increased a VE that was formerly 40 to now 48. For today I did ...

hi and:

Thanks again !!

Hi,

I haven´t bothered about ReqFuel so far, but now I get to a point where I do some fine-tuning to the VE bins. Unfortunately I have a relatively high ReqFuel figure of 18. Had been no problem so far, but now I suffer from the low resolution of the VE values that I get as a consequence of the ...

Thanks for the input !

- by putting stress onto the piston rings you mean that the burn time is prolonged with lean mixtures and the cylinder pressure curve starts to raise earlier - even against the compression stroke ? Has anyone made any measurements how that compares to the pressures that ...

sorry to put it up again ..

the point behind the "?" is not that meaningless as the title my imply.
I remember Toyota having offered a "lean-mix" vehicle in my coutry but I don´t think they were a great impact on the market. I think that´s been some 15-20 years ago. I wonder why that happened ...

low advance #'s contribute to a faster warmup

I thought that high advance would give the mixture/burnt gases more time to transfer heat to the cylinder wall = coolant. While with low advance the burn is shifted towards the time the exhaust valve opens and heat is emitted to the exhaust to a ...

Hi,

now that I´ve lost my fear for lean mixtures I´ve got a satisfactory setting of the VE´s for cruising. In traffic/Town driving I manage to have around 14.1-14.5 when taking off and soon get into 15.5 or even 16.5 for keeping the pace and even small acceleration. The engine seems to be ...

Thanks Lance,

so I will continue with trial and error (with the slight problem that I´m better in "error" than in "trial" :) ).

One more thing - I notice a somewhat harsh combustion noise when the engine goes from cranking into the "afterstart". I haven´t bothered too much about the leftmost ...