MSD coil pack

Discuss which Sensors work best with these ECUs and share how you are using inputs and outputs

Re: MSD coil pack

Postby stevieturbo » Sun Feb 16, 2020 5:59 am

5+6 are just a mirror of 1+2
stevieturbo
 
Posts: 3195
Joined: Tue Aug 02, 2011 12:08 pm
Location: Norn Iron
ECU Model: No ECU

Re: MSD coil pack

Postby MGFMINI » Sun Feb 16, 2020 6:27 am

Thanks Stevie,
Will change things around a bit pin wise and give it a go
MGFMINI
 
Posts: 54
Joined: Thu May 05, 2016 6:39 am
Location: Somerset, UK
ECU Model: P8 Pro

Re: MSD coil pack

Postby MGFMINI » Sun Feb 16, 2020 6:43 am

Just out of interest what are the gains from running non sequential over sequential....as trying to get my head around why you would want all the injectors injecting out of phase to their respective cylinders? sorry if that's a stupid question
MGFMINI
 
Posts: 54
Joined: Thu May 05, 2016 6:39 am
Location: Somerset, UK
ECU Model: P8 Pro

Re: MSD coil pack

Postby katana » Sun Feb 16, 2020 8:07 am

There are no 'gains' mechanically speaking - wasted spark / non sequential is easier / cheaper to engineer / build. Fuel economy and emissions tend to be worse especially around idle up to cruise speeds. Sometime 'wetting' the inlet tract can help on the non firing cylinder but you tend to inject sub optimal quantities each time as one clearly gets injected and ingested with dregs of the non injested one that wasn't so allowing AFR's to vary.
katana
 
Posts: 351
Joined: Sun Jan 27, 2013 6:08 pm
ECU Model: S60 Pro
Firmware Version: 29

Re: MSD coil pack

Postby Rob Stevens » Sun Feb 16, 2020 12:32 pm

stevieturbo wrote:
Rob Stevens wrote:Weard, so why would the sensor position change with the S series.


S series can run missing tooth anywhere

P series cannot. Pretty sure P must be less than 90deg.


Yeh I know, but this is the same engine, same flywheel, same sensor physical position and the S series demands the sensor position be moved by 180 deg. Do you see what I'm saying?
Rob Stevens
 
Posts: 1067
Joined: Thu Jul 28, 2011 4:10 am
ECU Model: S100 Pro
Distributor: None-Coil On Plug :)

Re: MSD coil pack

Postby Rob Stevens » Sun Feb 16, 2020 12:39 pm

Craig, remember in sequential mode the injector per cylinder fires just once every 2 revolutions, in batch mode it fires every revolution, as mentioned above it won't make much ods on a race car as when on full power the injectors are open nearly all the time, so moving that pulse around won't make much odds. but at idle and cruise can save fuel and run nicer.
My own K series is now sequential and idles beautifully and I have been able to save loads of fuel in the map, on the road I imagine i've improved by 3-4 mpg
Rob Stevens
 
Posts: 1067
Joined: Thu Jul 28, 2011 4:10 am
ECU Model: S100 Pro
Distributor: None-Coil On Plug :)

Re: MSD coil pack

Postby stevieturbo » Sun Feb 16, 2020 1:16 pm

Rob Stevens wrote:
stevieturbo wrote:
Rob Stevens wrote:Weard, so why would the sensor position change with the S series.


S series can run missing tooth anywhere

P series cannot. Pretty sure P must be less than 90deg.


Yeh I know, but this is the same engine, same flywheel, same sensor physical position and the S series demands the sensor position be moved by 180 deg. Do you see what I'm saying?


Maybe it was never right on the other setup ? Or maybe there are some changes not documented ?

As for batch vs sequential.

If you have the dyno time to fine tune the sequential, it may yield gains. That'd be a lot of work to optimise fueling and injection timing though to try and find them.

But as Rob says, in batch firing say a 1000cc injector twice ever 720, no matter how you look at it, it will spray far worse and be less controllable at lower rpm's vs the same injector fired only once per 720.
So sequential is definitely better for larger injectors.
stevieturbo
 
Posts: 3195
Joined: Tue Aug 02, 2011 12:08 pm
Location: Norn Iron
ECU Model: No ECU

Re: MSD coil pack

Postby MGFMINI » Tue Feb 18, 2020 2:49 pm

Thank you, appreciate your help and learning all the time
MGFMINI
 
Posts: 54
Joined: Thu May 05, 2016 6:39 am
Location: Somerset, UK
ECU Model: P8 Pro

Re: MSD coil pack

Postby MGFMINI » Sat Feb 29, 2020 1:56 pm

Well after another couple of weeks of head scratching and frustration....
The engine would not run properly, double checked and reset cam timing and valve lifts amongst others, then engine started ,but could not seem to get it to run very well, long story short I went back through the maps I had loaded into the ecu and noticed that somehow the ignition map which was in the map that came when I bought the ecu (Used) had somehow copied across to the map I had been working on (which is odd as the fuel map was from a different map) and was miles out....I thought Eureka ! as had a moment of clarity, so spent a few evenings copying the settings across from a map I had from Rob so knew was good.
Was excited to load this and try it.....Could not believe it when the engine would not start..and no way it was going to

After more trial and error I dashed into Euro car parts and picked up a standard ford Zetec tower coil tower for a ford Fiesta , replaced the existing MSD coil pack and changed plugs....and now runs great, think a lot of the trouble I have had was the MSD coil pack from the start....Grrrrr.

Can anyone recommend a decent coil pack and grade of plug to use with it on a rover k series 1.8

Thank you
MGFMINI
 
Posts: 54
Joined: Thu May 05, 2016 6:39 am
Location: Somerset, UK
ECU Model: P8 Pro

Re: MSD coil pack

Postby stevieturbo » Sat Feb 29, 2020 2:34 pm

The best coil pack is one that works....and you seem to have that now.
stevieturbo
 
Posts: 3195
Joined: Tue Aug 02, 2011 12:08 pm
Location: Norn Iron
ECU Model: No ECU

PreviousNext

Return to Sensors, Inputs, and Outputs

Who is online

Users browsing this forum: No registered users and 7 guests

cron