Mega Squirt?

Discuss the RB20, RB25 and RB26 series engines.
DETurbine
Posts: 491
Joined: Mon Jun 30, 2003 12:49 pm
Car: Nissan S13 RB25
Contact:

Post

Has anyone ran a Maga Squirt on their RB? I know of some people out here that are running them on their 4cyl, but no 6cyl. I know you can run this on 1-13cyl. motors with the fuel adjustment, but heard from some one that they do not have ignition/timing controls for 6cyl motors yet. Just seeing if anyone knew anything about if they did or not and also if you are running it or know some one who is.....how do you guys like it?



goofynick6
Posts: 1216
Joined: Thu Feb 05, 2004 9:58 am
Car: 1995 S14.5 RB20DET

Post

Over on forums.probetalk.com they've started using them a lot on 2.5 V6 Probes lately.

Nick

IvoryJ30t
Posts: 3076
Joined: Sun Aug 17, 2003 1:36 pm
Car: 95 Maxima GLE, 95 Maxima GXE

Post

wont really work. the mega squirt is only a fuel computer. it does not control timing.

cars without a distributor are pretty much assed out.

User avatar
JDMaholic
Posts: 195
Joined: Sun Sep 12, 2004 12:55 pm
Car: 1989 240SX with no engine

Post

I plan on using megasquirt when I get my RB20 (hopefully in a month or 2)

Here's the skinny on megasquirt;The original version controls fuel, and something like megajolt along with a host of other products in the same user group can be used to control spark. I used one on my old Jeep CJ7 that I converted to fuel injection and have since sold it, worked good.

What I will likely be doing and I would suggest any others do is waiting until at least the upgrade comes out.

Megasquirt II as it is called will be a daughterboard that directly plugs into the micro sockert on the original board. This utilizes a musch faster 16-bit processor and allows both spark and fuel control with the use of either an already existing mechanical distributor by controling the dwell or an inexpensive EDIS system with wasted spark. It also allows 12x12 timing and fuel tables and WBO2, although a separte controller(or maybe more codeing is needed to control the sensor). The good thing is that inexpensive parts and sensors are used(WBO2 sensor is like $30) This should be out very soon and will be inexpensive.

Ultra Megasquirt I believe it's called is going to be a totally new system that using an unbelieveably fast processor (something like 100Mhz) It will be able to completely control fuel and spark. It can control utilize and completely control WBO2 sensors (I think without a separate conroller, but I'm not sure) and there will be 2 channels of WBO2. Sequential injection will be possible. This will be out in ??months but problably after MSII.

I think, but am not sure, that you could program one of the extra channels to operate things like boost control although it will likely take some fabrication.

Most people I have talked to feel that these units are far superior to others in terms of their tunability and number of ways things can be controlled.

The basic megasquirt is easy to use but does not provide spark control or tuning tables and a number of other things. Be carefull to truly use these to their potential requires alot of knowlege of the systems.

I will probably order a MSII when they come out in a few months and I'll let you know how it goes.

goofynick6
Posts: 1216
Joined: Thu Feb 05, 2004 9:58 am
Car: 1995 S14.5 RB20DET

Post

I say using an EPROM emulator and a program like Live Edit, you can tune the stock ecu fuel, ignition, knock and vq maps for about $200...and it is realtime tuning that can be set to stock in a matter of seconds, or can load a racefuel map, etc, in seconds.

Nick

User avatar
JDMaholic
Posts: 195
Joined: Sun Sep 12, 2004 12:55 pm
Car: 1989 240SX with no engine

Post

All versions of megasquirt are real time, and you can change and save fuel maps, timing maps, and other paramaters as needed.

I think conzults has quite abit of stuff that can be used to alter the stock ecu in real time and is inexpensive. I know a guy who from Indonesia that had gotten all of the genuine Nissan stuff (his brother or somthing was an engineer for Nissan) to reprogram his ECU. I wasn't interested in it at the time as I still have no engine in my car, but when I see him again I'll see if I can get the program, supposidly it worked on all Nissan ECU's through like 99.

User avatar
evildky
Posts: 14225
Joined: Sat Jan 31, 2004 9:23 pm
Car: 71 Datsun 240ZT
87 Nissan 300ZX N/A-T
06 Nissan 350Z GT
Toyota Tundra TRD RW
Location: Louisville, KY
Contact:

Post

megasquirt n spark is a complete stand alone, that will manage your spark timing as well, I am in the process of setting up 2 L28ET's with megasquirt, for you non datsun geeks, that's the early Straight 6, as of now I'm not getting the spark signal, I'll be working on it more in the next week or so and should have some pregress, at some point I'd like to do the ford edis 6, but for now I'll settle for the HEI

User avatar
evildky
Posts: 14225
Joined: Sat Jan 31, 2004 9:23 pm
Car: 71 Datsun 240ZT
87 Nissan 300ZX N/A-T
06 Nissan 350Z GT
Toyota Tundra TRD RW
Location: Louisville, KY
Contact:

Post

IvoryJ30t wrote:wont really work. the mega squirt is only a fuel computer. it does not control timing.

cars without a distributor are pretty much assed out.
just to clarify the Megasquirt basic setup controls fuel, the Squirt n spark or any of the other software variants will manage your spark as well, so all engines can run a variant of megasquirt as a complete stand alone, there is a lot of information out there the problem is that ewveryone sets their up differently and on differnt engines so there are not many easy questions when it comes to set up

and BTW I saw a festive with a taurus SHO motor mounted in the rear (home made SHOgun) running mega squirt n spark


Return to “RB20DET / RB25DET / RB26DETT Forum”