what you think spi to ms2 set up??
Turbo Mini Forums

hi just running this past you to see what you think going to run my spi 1293 n/a 286 cam with MS2/Extra (std one form diyautotune.com) mini mpi coil, 36-1 triger wheel and jenvey 45mm http://www.jenvey.co.uk/home/twin-throttle...m-single-tbsxxi but whats bets to use for Idle control, stepper on jenvey (if one fits) or iac (in a alloy block and piped up)

Edited by bhpmini on 22nd Aug, 2011.

ms2 is beyond me come back carbs all is forgiven why did I decide to modify a spi mini to late to turn back now so please put up with my stupid question and humour me

Which intake manifold are going to use? The problem with this setup is that the injectors are going to be too far and in a bad position for correct port injection with sequential injection (and the siamese code). And you can't use it for a wet manifold setup since each injector is only seeing one intake port.

So I would think you'd be better off looking at an alternative depending on whether you want to do sequential port injection or have a wet manifold setup.

A non-sequential port injection setup is not a good option on a 5-port engine in my opinion.

Jean

http://www.jbperf.com/

was going to use weber manifold and for wet manifold still getting my head round it even after reading lots of books lol then when up and running and saved some cash up was going to get a v max supercharger kit and use jenvey on it fits weber manifold

Edited by bhpmini on 22nd Aug, 2011.

ms2 is beyond me come back carbs all is forgiven why did I decide to modify a spi mini to late to turn back now so please put up with my stupid question and humour me

Have you already purchased the MS2?

You dont mention cam sensor?

I looked at using one of the Jenveys you posted with a weber manifold, nice long runners so should get decent torque. The only reason we are planning on using the mikuni (think that's it) ones now is I don't have a weber box :(

Edited by sturgeo on 23rd Aug, 2011.

The benefit of the Mikunis is that we can get them close to the head and at 45 degrees so that the injector points straight down the port. We will add length to the runner upstream of the TB to get decent torque.

We also have a pair of Jenveys without injector pockets if the Mikunis are no good. With the Jenveys, the injector pockets would be welded into the manifold close to the head.

That Weber style Jenvey TB could work, but as Jean says, there may be issues due to the distance of the injector to the valve.

Idle air would probably best be achieved with a 2/3 wire Bosch PWM valve piped to each runner.

I assume you are thinking of a front mounted supercharger? No room for TBs and a blower at the back.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Yes got ms2

Cam sensor was thinking mod dizzy but need to work that out still

Only thinking jenvey as one going v cheap with tps, fuel rail, injectors etc what price are mikunis and any info just in case don't get jenvey (and like you say if fueling not right can block up holes and move injectors to manifold At later date

Vmax and others do a suck throw kit with a weber on a snorkel but would like blow throw set up but that a long way off yet as just need to get her running again first with what little cash I got left lol

ms2 is beyond me come back carbs all is forgiven why did I decide to modify a spi mini to late to turn back now so please put up with my stupid question and humour me

Have a read:

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=411942

These are the Mikunis:

http://www.ebay.co.uk/itm/KAWASAKI-GPZ1100...=item27bcfc71cd

EDIT: Even better:

http://www.ebay.co.uk/itm/Kawasaki-Gpz-110...=item2eb752c859

Edited by Paul S on 23rd Aug, 2011.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

thanks for the info jenvey paln is scraped for now will get it running on spi set up for now just to speed up getting it on road then?????? lol

ms2 is beyond me come back carbs all is forgiven why did I decide to modify a spi mini to late to turn back now so please put up with my stupid question and humour me

got a few questions (not doing to well with all this ms stuff) going to run std spi set up just till i get my head round making a port injecting blow through supercharger set up looking for 130/150hp (or if that fails will just get a suck through kit lol) so whats best to use (pro/con you have found) high or low injectors dont know wether to fit/need a Peak&Hold Injector Driver Board (got std ms2) and whats best to run/wire up vr or hall for cam sensor (searched the site but not much info on whats been used or made)

big thanks for any info and if any of you are going to MiniFest at Uttoxeter or Stanford Hall Mini Show would like to see your set up if in mini or just pick you brain

Edited by bhpmini on 31st Aug, 2011.

ms2 is beyond me come back carbs all is forgiven why did I decide to modify a spi mini to late to turn back now so please put up with my stupid question and humour me

From what I can see don't need cam sensor or any add on for spi or suck supercharger

ms2 is beyond me come back carbs all is forgiven why did I decide to modify a spi mini to late to turn back now so please put up with my stupid question and humour me

If you are doing "wet manifold" ie, a non sequential system, then you don't need a cam sensor.

Cam sensor is only for sequential siamese port injection.

High or Low z injectors is really your choice. High z are more common nowadays and need less complicated drive circuitry (ie, no Peak and Hold and lower rated drive transistors) but tend to be more expensive in larger capacities (although the price difference is coming down). Low z are generally cheaper for large capacity, possibly have quicker openning times (although this too is improving with high z ones). They need the additional Peak and Hold drivers unless your MS2 is fully built with all the injector components in which case it drives low z injectors using PWM (which has to be setup in the software). My personal choice is low z with Peak and Hold drivers but I am probably in the minority.

If you did want a cam (phase sensor) the best choice is hall or Opto. Don't go for VR as the MS2 can only take one VR input (from the crank 36:1 wheel) and would need an extra board for a second VR input. It seems from your second post you don't want one but there are pictures of both types on the forum.

Schrödinger's cat - so which one am I ???

Now got a fully built ms2, kit from diyautotune so think it will do both

my other question i got a 36 way Econoseal to link the ms2 half loom to the mini spi loom, relays and fuse just like a stock ecu (just have to add a some wires for mpi coil to get rid of dizzy) would you recomed and other fuses to add in to the ms2 half loom befor it joins mini loom for safty???

Edited by bhpmini on 2nd Sep, 2011.

ms2 is beyond me come back carbs all is forgiven why did I decide to modify a spi mini to late to turn back now so please put up with my stupid question and humour me

Well, from what you have just said, there are a couple of points to consider.

If you are getting rid of the dizzy and using a coilpack (doesn't matter if it's the MPI one or the more usual choice of a Ford one) it will not have been catered for in the SPI loom so it will need power/fuse. Also, if you bought the MS2 assembled, did you specify two high current ignition outputs (ignitors) as it is usually only supplied with one for a normal coil ?

Injectors - depending on whether you use low z or high z, you might have to upgrade the supply/fuse. The SPI was a single low pressure injector so was probably fairly low current. And on that point, have you replaced the SPI fuel pump with either an MPI one or any aftermarket fuel injection pump ? The SPI one will not supply the 3 - 3.5bar that normal fuel injectors require.

Schrödinger's cat - so which one am I ???

got this ms2 http://www.diyautotune.com/catalog/megasqu...case-p-119.html (friend built it)

was going to use the spi set up for now with a http://shop.vems.hu/catalog/power-resistor-p-120.html for the injector

what wbo2 would you recomed?
then when i upgrade to supercharger will use 2 high z injectors like vmax kit or go for broke and do staged port injection blow through lol and upgrade fuel pump to a Walbro 255 (but long long way of that yet just need to get her running first)

beginning to think i should have got a Specialist Components etc Plug-N-Play ecu lol (but no rolling road i know wll map them)

Edited by bhpmini on 1st Sep, 2011.

ms2 is beyond me come back carbs all is forgiven why did I decide to modify a spi mini to late to turn back now so please put up with my stupid question and humour me

Edited by Rod S on 1st Sep, 2011.

Schrödinger's cat - so which one am I ???

I knew what I ment as its the same thing really now got a fully built ms2, was a kit from DIYautotune and have change signature I think that's better lol

Edited by bhpmini on 2nd Sep, 2011.

ms2 is beyond me come back carbs all is forgiven why did I decide to modify a spi mini to late to turn back now so please put up with my stupid question and humour me

To be fair, any RR should be able to map any ECU. If I had a RR I'd just say, "yeah, no problem, but it might take a bit longer as I'll have to learn the system, might cost a few extra pennies?"

I haven't had my Sprint on a RR since fitting my wet manifold FI system, just a wideband and a laptop on the passenger seat.

Where are you based?

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

John Buddy, i'll come round one evening next week and go through the whole thing for you.

I have said this before, but you really do need the wideband.

There is nothing complicated to getting the standard SPi system running on Megasquirt.

Stop fretting

You know me fretting is my middle name will ring you later what would I do with out u big big thank you (you all way make it sound easy )

ms2 is beyond me come back carbs all is forgiven why did I decide to modify a spi mini to late to turn back now so please put up with my stupid question and humour me