Technical Megasquirt

Currently reading:
Technical Megasquirt

yes, mines running nicely. fully road legal. very driveable. quite nippy - just needs further tweaking to the maps

Cool, could I take your file when I get mine all fitted to start from?
 
just been shopping..

icv1.jpg

icv_close.jpg


Bosch PWM idle valve off a caviler, should do the job.

this is needed because MS can control a fast idle valve (opens to allow fast idle) or a PWM idle contol valve with a simple mod.. or with a complex mod it can control a stepper motor valve like the type we have on our cars. I don't want to do that kinda modification to the ECU yet.. so i'll fit the PWM valve for now.
 
Last edited:
Cheers Asteris,

as far i can see thought, that article talks about driving several coil packs at different times, for >4 cylinders running wasted spark.

What i want to do is run a 4 cylinder wasted spark system, that normally has 2 spark outputs (1+3)(2+4), but splice it so i run 4 coils in wasted mode.

Kind of hard to explain exactly what i mean, so i may just fit the COP set-up to my running seicento ecu, splicing wires, and see if it runs :eek: :D

It could work in which case my idea is verified, or it could result in £200 of COP plugs and a Seicento ECU destroyed :eek: :devil: :eek:

I'll try it on the weekend if I get chance....wish me luck lol

Kristian

Read a couple pages lower, at the link i gave you, it says "Driving two coils from the same spark output e.g. 4cy COP (wasted spark format) 6cy and 8cy COP"....

http://www.msextra.com/ms2extra/MS2-Extra_Ignition.htm#2coilscop



 
Read a couple pages lower, at the link i gave you, it says "Driving two coils from the same spark output e.g. 4cy COP (wasted spark format) 6cy and 8cy COP"....

http://www.msextra.com/ms2extra/MS2-Extra_Ignition.htm#2coilscop




Totally missed that :worship:

That is exactly what I need to do then (y) ... just have to find some more vb921's from a UK supplier and I'll be all set...great stuff :D

I''l pratcive the MS with the old coil and leads, then once it works, add two more vb921's and fir the COP's :)

Cheers,

Kristian

Kristian
 
Hi All

My 1242 8v Cinq mpi turbo has a Megasquirt V3 with 4 VB921 transistors as it has been modified to run COP on a 4 cylinder(although I am only using 2 of them and the standard coil packs). I burned one of the transistors out while trying a few things and believe me when I say you cant get them in England unless you want to buy 500 of them. Best bet is to do what I did and contact one of the American Megasquirt suppliers(Glens Garage...etc) and ask if they will sell you some.


Rich.
 
Anyone got a half decent map for the 1242 8v yet?? Looked everywhere, the tables on here a few pages back, mega squirt wont load as it says some of the parameters are two high, and the not starting for a couple of attempts when warm is annoying.Will get it looked at by apro when pennies allow, but in the meantime any clues would be great. Thanks in advance.
 
my map is not finished at the moment, but it runs my car. if you would like a copy, i've attached it to this post.

BIG DISCLAIMER:THIS IS THE MAPPING USED TO RUN MY CAR, EVERY CAR DIFFERS. THIS MAP IS NOT FINISHED, AND YOU SHOULD NOT JUST BLIDNLY LOAD IT ONTO YOUR ECU AND RUN YOUR ENGINE OFF IT

what i suggest you do, open MT and load my settings file and have a look at it. on your laptop, open MT and look at your current settings and compare the two. do not burn my settings file into your ECU and make sure you backup your files before you make any changes.
 

Attachments

  • current.zip
    5.7 KB · Views: 137
sorry my bad, should have put that mine is a turbo. Would guess the cold start etc settings would be the same though.
 
Arc, what firmware are you running?

What Trigger/Angle offset and Tooth#1 angle do you use?

Also post Cranking Pulse table and your VE table please.

Thanks.
 
ok, my VE table was origonally based daves and i've not re-done it yet to reflect never going over atmosphere, and playing with autotune has made a mess of it..

firmware is MSExtra 29t.

other information is in attached pictures.
 

Attachments

  • crank_table.jpg
    crank_table.jpg
    70.9 KB · Views: 80
  • decoder.jpg
    decoder.jpg
    65.1 KB · Views: 90
  • messy_ve.jpg
    messy_ve.jpg
    122.2 KB · Views: 462
  • spark.jpg
    spark.jpg
    68.4 KB · Views: 95
Back
Top