megasquirt

Discuss the RB20, RB25 and RB26 series engines.
MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

has any1 used megasquirt yet. because i had enough of the stock ecu an electronics lol so time 2 change up. so if any1 has please give some info like was it fairly easy or hard what should i buy with it stuff like that?? thanks


User avatar
WhatsADSM
Posts: 496
Joined: Fri Jun 10, 2005 5:27 pm
Car: 1998 240sx

Post

get in touch with kevwa (his SN on these forums). He has a RB powered S10 and is running the megasquirt, so he should be able to give you a hand.

There is also someone else on here that runs it but the name slips my mind.

MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

thanks for looking out

rb25drag
Posts: 1311
Joined: Mon Sep 24, 2007 9:51 am
Car: 1990 Nissan 240SX 5.3 Chevy + 60mm turbo + blow threw carb.

Post

I personally run a Ms1 and Kevwa runs a ms2, You will wanna go like Kevin did and use a ms2, Its a more updated version. I only use The ms1 for timing only.He uses the ms2 with a relay board with a edis coil setup. I use a ls2 coil setup in a wastedspark setup.You need to do some re-search. The MS is no plug and play. It can be pretty difficult. In a scale 1-10 I say its an 8.All of the information is online. You can elect to build the ecu yourself. Or you can have Diyauto tune to build it for you and your setup. If you build it yourself look for ALOT of time and re-search on building it.If you decide to go Ms you will learn alot. Plus ur tuning is unlimited.

MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

well im probly buying the stuff 2morrow and im gonna use it for fuel and ignition im gonna get the MegaSquirt-II ems do it yourself 1. but if i have any questions ill probly ask you or kevwa if thats ok?? id like 2 get rid of the stock ignition setup because all iv had is problems with it, so what setup did you use??

rb25drag
Posts: 1311
Joined: Mon Sep 24, 2007 9:51 am
Car: 1990 Nissan 240SX 5.3 Chevy + 60mm turbo + blow threw carb.

Post

ya I can help you with the ignition, but kevwa will have to help ya on the fuel. I run propane as fuel so thats why im not controlling the fuel by the megasquirt.Consider this. If you go with a wasted spark ls2 coil setup you can use the built in launch control on the megasquirt board. The ls2 coils are AWESOME and i picked my used set of 8 on ebay for 90$. They have built in ignitors so no worries of ignitor chips n all that mess.But if you go with a edis setup you cannot use the launch control.You also will need the 6" 36-1 crank triggerr wheel, Also go to your local part store and pick up a crank sensor for a 99 ford escort zx2. its like 23$ Thats the vr sensor for the timing signal.

MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

thanks. im not trying 2 do somthing 2 different because then id run into a $hit load of problems lol so 2 make it easy for me, if you dont mind can you give me a list of the stuff you got for the ignition setup with launch control and where 2 get it. and what is wasted spark?? it may sound like a stupid question, but im new 2 this tuning stuff. thanks for the help

rb25drag
Posts: 1311
Joined: Mon Sep 24, 2007 9:51 am
Car: 1990 Nissan 240SX 5.3 Chevy + 60mm turbo + blow threw carb.

Post

Wasted spark is simple. Basically cyl 1,6 and 2,5 and 3,4 all hook together and they fire 2 times per revolution. Thats why its called wasted spark b/c technically you only need 1 spark per revolution but since 1,6 is hooked together cyl 1 will fire then 6 will fire 90 degree's of each other.

User avatar
kevwa
Posts: 281
Joined: Wed Sep 12, 2007 7:42 am
Car: 95 Chevy S10 RB25DET

Post

m glad to hear someone else is interested in the megasquirt!! IDK if you have seen my build thread yet but I have some info in there regarding the MSII - zer...age=1

For the MS you def should buy it from http://www.diyautotune.com/ they have been nothing but helpful to me - i have been dealing with matt and jerry through email and they respond quickly and have lots of good info. also check out http://www.megamanual.com/index.html if you have not done so already because that site has the build instructions for assembling the MS as well as lots more info. One last site is http://www.msefi.com which is a forum that has tons of helpful info.

as for my setup - it is the MSII with a relay board like RB25Drag said - i like the relay board because it makes wiring simple, however it doesnt come with a cover so to me it does not give a very clean look - anyway its personal preference i guess - i have some pictures of it on the build thread i posted earlier

idk if this will help you but this is a complete list of what i got...- MSII EMS unassembled kit- relay board- cable to connect relay board to MSII EMS- MapDaddy 4 bar map sensor (the MSII board comes with a 2.5 bar)- 36-1 trigger wheel 6.75"- Innovate Tuning LC1 Wide Band with DB gauge all of this was from DIYAutotune.com

At the junk yard...- FORD EDIS 6 off a windstar mini van- VR sensor off same van- it was less than $20 for both i believe

i am using the buick grand national waste spark coil with accel plug wireswaste spark - basically this system fires 2 plugs at once off of the same coil so it is "wasting" a spark since you only need plug to fire at a time

hope some of this helps - let me know if you have any more questions

RB25Drag - why do you say the launch control will not work with the EDIS - It should not matter what ignition system you have since the launch control is controlled with the MS computer - at least that is what my impression was, but I have not looked into it very much yet

oh and one more thing - you should come to the megasquirt meet in georgia!!! http://www.diyautotune.com/eve...9.htm

User avatar
kevwa
Posts: 281
Joined: Wed Sep 12, 2007 7:42 am
Car: 95 Chevy S10 RB25DET

Post

haha RB25Drag you replies while i was typing my replay cause it was so long

rb25drag
Posts: 1311
Joined: Mon Sep 24, 2007 9:51 am
Car: 1990 Nissan 240SX 5.3 Chevy + 60mm turbo + blow threw carb.

Post

Kevin, ha ha ur just too slow lol. But the reason I say that about the launch control is b/c thats what Diy told me. So Idk. But my Ls2 coils vs ur grand national ones are like a semi vs a golf Mine have alot more juice for alot less energy. Thats why I am using them. Im tired of ignition problems from weak coils on high boost.

MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

well its probly not gonna be ready in time for that meet, but ill try.thanks kevin for the list of the stuff i need 2 make this work, but id like 2 use launch control, so the only difference between your guys ignition setup is the coils??

User avatar
kevwa
Posts: 281
Joined: Wed Sep 12, 2007 7:42 am
Car: 95 Chevy S10 RB25DET

Post

it doesnt matter if yours is not ready for the meet, you should just come anyway because there will be lots of helpful tech sessions and plenty of time for questions.

MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

ok i might be able 2 get up there

MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

ok so i went 2 advance auto parts and got a vr sensor off a 99 ford escort zx2 and i was wondering how far does it need 2 be from the trigger wheel??? and im a little tight on money so im probly gonna go with the mini van coil pack. but if i can find it on ebay for cheaper than ill get the ls2 coil packs...

rb25drag
Posts: 1311
Joined: Mon Sep 24, 2007 9:51 am
Car: 1990 Nissan 240SX 5.3 Chevy + 60mm turbo + blow threw carb.

Post

They say to set it between .060- .100 But I personally think thats too far away. I set mine at .045

User avatar
WhatsADSM
Posts: 496
Joined: Fri Jun 10, 2005 5:27 pm
Car: 1998 240sx

Post

kevwa wrote:RB25Drag - why do you say the launch control will not work with the EDIS - It should not matter what ignition system you have since the launch control is controlled with the MS computer - at least that is what my impression was, but I have not looked into it very much yet[/url]
What DIY/rb25drag is saying makes sense. Launch control is typically done by cutting ignition events. This can be done if the megasquirt is controlling the ignition directly. Like in the case of LSx coils as RB25drag is using.

However if you are using a ford EDIS, then the megasquirt is actually not in direct control of the ignition events. That is done by the EDIS computer. All the megasquirt can tell the EDIS is where it wants the timing, it can't tell it to actually skip ignition events. So yea make sense that you wouldn't have launch control with the EDIS.

MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

kevwa i got the coil pack thing off the van and i was wondering what pin goes 2 what. like signal ground stuf like that if you could get back id appreciate it thanks

User avatar
Chaos the Xile
Posts: 789
Joined: Thu Feb 09, 2006 4:56 pm
Car: 1974 Datsun 260Z

Post

i've been interested in the megasquirts for awhile but never know waht to buy to get in to work with the setup i have. S1 Rb25 complete rebuild tomei 270/10.25 procams, solid lifter conversion, retaining vtc. stock ignition system, rb26 itbs wanting to go w/ a map sensor... what should i buy IF i were to buy a megasquirt, maybe someone can shine shome light on this for me????

User avatar
kevwa
Posts: 281
Joined: Wed Sep 12, 2007 7:42 am
Car: 95 Chevy S10 RB25DET

Post

WhatsaDSMthanks for that info on the launch control - that does make sense - and i guess i will find out for sure at the meet ..

MoToGcheck this link out - its off the megamanual site http://www.megamanual.com/index.html

Chaos the Xileplease read this post as i posted my setup with lots of links

MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

does it matter where the vr sensor is located besides the distance from the trigger wheel??

User avatar
kevwa
Posts: 281
Joined: Wed Sep 12, 2007 7:42 am
Car: 95 Chevy S10 RB25DET

Post

the VR sensor needs to be 60 degrees before the missing tooth on the trigger wheel. Each tooth is 10 degrees so mount the VR sensor so it is centered over the 6th tooth in the counterclockwise direction from the missing tooth

MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

thanks kevwa.. just wondering what tps did u use

User avatar
kevwa
Posts: 281
Joined: Wed Sep 12, 2007 7:42 am
Car: 95 Chevy S10 RB25DET

Post

i am using the stock RB25DET S1 tps

MoToG
Posts: 82
Joined: Fri Oct 10, 2008 2:01 pm
Car: rb20 240sx

Post

well for some reason mine only reads wot (wide open throttle) and closed no in between readings???

User avatar
kevwa
Posts: 281
Joined: Wed Sep 12, 2007 7:42 am
Car: 95 Chevy S10 RB25DET

Post

that would make me think you have a bad tps

User avatar
Sturge
Posts: 12
Joined: Wed Feb 11, 2009 10:36 pm
Car: s13 sil80 with rb25

Post

Any updates on the megasquirt guys? im currently building an MS2 version 3pcb. was gonna use edis for ease, but gutted i cant run launch control!

MS is going to be fitted to series 1 rb25det. i bought the kit from DIYAUTOTUNE.

anyone know what version of the megasquirt code i need to download to run on the rb25?

rb25drag
Posts: 1311
Joined: Mon Sep 24, 2007 9:51 am
Car: 1990 Nissan 240SX 5.3 Chevy + 60mm turbo + blow threw carb.

Post

you want the latest version firmware out. I think its 3.0,

Im Still Tuning mine in. I have had some down time for some fabrication. But Hopefully get some Street tuning and track time next week.

User avatar
Sturge
Posts: 12
Joined: Wed Feb 11, 2009 10:36 pm
Car: s13 sil80 with rb25

Post

cool, I have the lateset tuning software from megasquirt but i need the latest code to programthe daughter board

rb25drag
Posts: 1311
Joined: Mon Sep 24, 2007 9:51 am
Car: 1990 Nissan 240SX 5.3 Chevy + 60mm turbo + blow threw carb.

Post

You Just need to download the latest firmware to you megasquirt. I am running a cool program called Tuner Studio ms, It works with all megasquirt ecu's.I like itt cause it allows you to customize your own dash boards. Any gauge, size, style, color, font, etc. Its still setup Program wise like the regular ms tuning.You can download it offline if you wanna try it.


Return to “RB20DET / RB25DET / RB26DETT Forum”