RB + MegaSquirt ??

[300Plus]

Does anyone have pics or any info on someone running megasquirt on their RB? I've heard it has been done by a few ppl just want to see the setup and ask questions. Its a complete standalone that will run a MAP sensor for around 300 bucks you can't beat that. Thanks in advance guys!

a little info if interested:



http://www.megamanual.com/ms2/index.htm

[linuxbatm]

I dunno if its been done, but id like to see if its possible. Megasquirt is a great system, and even more appealing since you cant get powerfcs anymore.

[300Plus]

from what I've heard you replace the CAS with a gear and sensor on the crank pulley , but now they may have the ability to use the stock optical CAS , I'm not sure

[nissanman04]

IIRC i saw it used on a rb25 powered 240z. I was looking into doing it, then i realized that I lacked the funds for a serious turbo upgrade, lol.

found the link: http://www.classiczcars.com/fo...16256

edit: looks like he bailed on the megasquirt though
Modified by nissanman04 at 3:20 PM 2/16/2007

[Bronze MFP]

RB ecu's are relativly easy to rom tune and are every bit as good as a power FC. don't underestimate the stock ecu.

[300Plus]

I'll take a link with rom tuning option if ya got it love to learn

[Spazz]

RB ecu's are relativly easy to rom tune and are every bit as good as a power FC. don't underestimate the stock ecu.

rb25's rom is burnt into the ecu , unlike the rb20 and 26.

[minivan_don]

one way of making the megasquirt run on the rb is to convert to a wasted spark setup. that means you need a edis6 module, a 36-1 trigger wheel, and a new coil pack ...

i was going to do ms as well but ive opted to go with something substancially better as i drastically changed my setup.

[BoostFab]

from what I've heard you replace the CAS with a gear and sensor on the crank pulley , but now they may have the ability to use the stock optical CAS , I'm not sure

you don't have to, the MS should be able to read the optical trigger signal from the CAS. KAT guys are using their opticial trigger in the distributor disc. and the rb isn't that far off.

[stewie8apie]

RB ecu's are relativly easy to rom tune and are every bit as good as a power FC. don't underestimate the stock ecu.

where can we get this from tho? link would be awesome

[240sxautox]

xtronics.com

the pocket romulator

[linuxbatm]

RB25 ecus have the eprom data contained within the processor, theres no way to "chip" them via traditional methods.

[Carl H]

quit your bitching and run your 25 off of a z32 tt ecu. controls vtc and is tuneable.if you are really interested lmk.also iirc the megasquirt has a 12x12 map, kinda downgrading when the stock ecu has a 16x16 map.

[linuxbatm]

Yeah im kinda curious, i havent heard of this option before.

[300Plus]

quit your bitching and run your 25 off of a z32 tt ecu. controls vtc and is tuneable.if you are really interested lmk.also iirc the megasquirt has a 12x12 map, kinda downgrading when the stock ecu has a 16x16 map.

Carl please enlighten us.

[s14 2510's]

but in the 12x12 grid you can pull one cell with problems and work on that one cell. It would take some time on a dyno to come up with your map. Im going to use megasquirt v3 on my rb20. The car is gutted and most likely going to be drift . The thing im looking into is what to use for spark. I will find this tread and update once i get more involved into making the harness. I think this system is my best bet for what I want to do with the car for mods.

[Sil240]

What???Lucy!!!.... you got some splainin' to do!!!!

I don't get it explain that??

I thought that on a 12 X 12 grid it would be.12 cells up of Load vs 12 cells across of RPM etc...

I've never programmed a ecu before to drop some knowledge on me.

[BoostFab]

but in the 12x12 grid you can pull one cell with problems and work on that one cell.

no way, the 16x16 offers more flexibility for fine-tuning. just give that a little thought, will ya.

[klh6686]

the 12x12 grid is adjustable though, you can specify the scale and range in which you want to fine tune. ALL engine management has to interpolate between the cells. 12 or 16 either way the engine sees so much more. I'm just stating this so that people don't throw the MS out the window because its 12x12 vs 16x16. Also, DO NOT go for the MS unless you are COMPLETELY comfortable w/ 100% DIY engine management. btw, I will be MS a built rb25 as soon as the motor gets back to the shop and the rest of the fabrication is completed.

[s14 2510's]

Im still up in the air on what ems to get I gave up on megasquirt for now as im not happy with spark drivers they offer. I have some looking to do but who knows an AEM ems may be the best thing for me. Looks like im just guna have to fork out like 1k for a good ems.I know a guy here im mn who has great luck tuning with megasquirts. He told me to get one but im un happy with what they offer for spark drivers. klh6686 what are you using for spark? V 1, 2.2, or 3? I would like to use the stock coils.

[Carl H]

s14 2510's - i hope you realize that the std rb26 ecu is a 27c256 eprom based ecu, so for a little over 180$ you could have an emulator and have an ecu capable of controling a 1kwhp+ motor.the japanese love tuning the std nissan ecu, its terribly reliable and its amazing...i mean it has dual maps, o2 feedback, knock retard, and is gaurenteeded to run everything on the car no worries.not to mention since its a std piece of kit it has a good base map to go from and honestly the stock maps require just a little tweaking to coax great power out of, seriously something to think about.

[Sil240]

Check out that NistuneIt'll be available in March sometime.$300 shipped for the board, software and instructions.

It can work with a wideband O2, consult and all in your stock ECU.

[klh6686]

Well I'm using MSnS'Extra which is a MS 1 board w/ extra codnig. We are using MS driven coils w/ wires vs the FORD EDIS setup. This allows us a large amount of flexibility in the control of our coils. If you are a first time MS'er I would recomend keeping the FORD EDIS at first because it is simpler to setup.

Now let me tell you why I chose the MS. First of all, the car is 100% project/toy. It is not meant to be daily and has only the bare min to run. the car will not have any factory harness on it and the body will only be ran with wiring for the lights, wipers, and maybe horn. Also, The car is expected to see 30+ psi of boost, hence the use of a 4 bar map sensor (which was $60 btw, screw mafs).

If you are planning on 500 and below WHP, or want it to be DAILY DRIVEN i suggest talking to carl about the z32 ecu setup. I believe it plugs into the rb25 harness, you just have to repin a few wires. Z32's run a daughterboard like SR's so i believe you can have up to 2 maps. Also if you plan to keep an accesories such as PS or A/C or stock dash gauges.

[Carl H]

If you are planning on 500 and below WHP, or want it to be DAILY DRIVEN i suggest talking to carl about the z32 ecu setup. I believe it plugs into the rb25 harness, you just have to repin a few wires. Z32's run a daughterboard like SR's so i believe you can have up to 2 maps. Also if you plan to keep an accesories such as PS or A/C or stock dash gauges.

almost entierly correct but not quite .but yeah, it can be done...hell i could set up a rb20 ecu to run a 25...there are diffrences in ecus but im looking into even using a j30 ecu to run a 25, from what ive found so far it should work.hooray map switching and launch control !

[klh6686]

Lol, I believe we discussed at one time, but I had already placed the order on the MS and didn't pay it any attention. What else is needed to be done or is this some type of product you're working on? I think something like this could greatly benefit the 25 users who don't want to go PFC.

[l0nestar]

Yes, I am interested in what all is involved with using a different ECU to control a 25... Other than 'send me money and get a product back'. Which is understandable, but still.

[s14 2510's]

msd makes a dis-4 and dis-2 box. I talked to msd and they said if I ran both these boxes I would have no problem using a megasquirt on my rb20. The rb26 will most likely get the aem ems and msd dis boxes too. -down the road when I sell my s13.Ivan has a stock blocked and head ka24de that is over 700hp that runs off the msd dis-4 box. Both my cars are not daily drivers. The s13 will be the olney car that is on the road and that will be goint to events.

[Sil240]

msd makes a dis-4 and dis-2 box. I talked to msd and they said if I ran both these boxes I would have no problem using a megasquirt on my rb20. The rb26 will most likely get the aem ems and msd dis boxes too. -down the road when I sell my s13.Ivan has a stock blocked and head ka24de that is over 700hp that runs off the msd dis-4 box. Both my cars are not daily drivers. The s13 will be the olney car that is on the road and that will be goint to events.

Umm Stock block or stock internals????700HP???

klh6686- your running 30psi on your 20?What internals do you have?

Don't know how well this Nistune is, but if it does what it's supposed to do.For the $$ its better.

I wont have to find someone to adapt a trigger to my crank pulley or switch ignition systems. (even though I want to, want to run that MSD soft touch rev). Or make a new harness or buy sensors or anything like that. (Hopefully)

The megasquirt sounds nice, but I'd take a look into the stock ecu.Either Chipped or some kind of Romulator etc..

[klh6686]

Umm Stock block or stock internals????700HP???

klh6686- your running 30psi on your 20?What internals do you have?

Don't know how well this Nistune is, but if it does what it's supposed to do.For the $$ its better.

I wont have to find someone to adapt a trigger to my crank pulley or switch ignition systems. (even though I want to, want to run that MSD soft touch rev). Or make a new harness or buy sensors or anything like that. (Hopefully)

The megasquirt sounds nice, but I'd take a look into the stock ecu.Either Chipped or some kind of Romulator etc..

No, I'm sorry I didn't clarify. It is a project RB25 on the side that is fully built w/ RB26 forged niternals (including crank) all arp hardware, everything. So it should enjoy the boost.

[Swedish Mike]

Another low priced and great option is Vems:http://shop.vems.hu/catalog/index.php?cPath=1

Both Vems and MS guys over here use Autronic´s trigger disc to mount in the CAS on their Skyline´s.