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1JZ VVT-I Engine managment


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#21 Austin

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Posted 20 September 2013 - 04:58 AM

Probably. I hate megasquirt. Theres another dude i know that bought one of their pre built plug and play boxes and had to go over all of their solder joints because they were shitty.

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#22 Gordo

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Posted 20 September 2013 - 08:28 AM

That's what happens when you employ the neighborhood kids to solder shit together, and pay them with an ice cream cone.

They are the ones who in a few years buy 240SX shit boxes.


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#23 1j240z

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Posted 20 September 2013 - 08:48 AM

well hopfully they do a better job on my solder points.  I get back from my deployment in about 2 months and need t put the motor back together.  So tops maybe 3 months till its running.


73 240z- Stroked/bored L31, built head, stage 3 cam, triple webbers, 5 speed KA swap.  (1JZ VVT-I being built to go in the car now!)


#24 gameface

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Posted 20 September 2013 - 06:25 PM

Well the megasquirt 3 pro is manufactured rather than being a hand built deal.... so there isn't really much to worry about.

 

The other versions you are basically wasting money buying prebuilt because its pretty damn easy to do yourself.



#25 Austin

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Posted 20 September 2013 - 07:21 PM

all im saying is kevin bought an aem on ebay bnib for 395$. why the fuck would you buy something like megasquirt when there are standalones like that available all the time for the same or marginally more.


1986 KA-T AE86 Corolla coupe: For sale for ever maybe?
1977 Datsun 280Z: 1.5jz aem v2 and holset.

Cressida's are for bandwagoners, real drifters drive pignose s13's with rb20's and xxr's.

RIVALHOUSEGARAGE.COM


#26 1j240z

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Posted 21 September 2013 - 09:05 AM

Well I will be a guinea pig when it comes to MS3-Pro.  Not to mention everyone has their preference, Im happy as long as it manages the motor!  Also last I heard MS has a tablet app so I can have a heads up display or even adjust my tune on the go.


73 240z- Stroked/bored L31, built head, stage 3 cam, triple webbers, 5 speed KA swap.  (1JZ VVT-I being built to go in the car now!)


#27 Austin

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Posted 21 September 2013 - 01:04 PM

nah,  either jimmy hoffa or foompla is running ms3, says it's working


1986 KA-T AE86 Corolla coupe: For sale for ever maybe?
1977 Datsun 280Z: 1.5jz aem v2 and holset.

Cressida's are for bandwagoners, real drifters drive pignose s13's with rb20's and xxr's.

RIVALHOUSEGARAGE.COM


#28 joooeone1

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Posted 22 September 2013 - 08:00 PM

i using one to not a presolder one i did that part myself and a friend i like it its preatty cool but i do rather have the ms3 pro


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#29 bippu

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Posted 24 September 2013 - 09:17 AM

I messaged you back Gordo.


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#30 JimmyHoffa

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Posted 28 September 2013 - 04:26 PM

I'm running an MS3X and my car runs better than stock. If you have a half-decent understanding of electronics, can read a wiring diagram, can solder, and can read, you can build, wire and get one running. The reason they have a bad rap is that people do shoddy jobs of building their MS or wiring their cars, then they take them to a tuner and bitch and moan when things don't work and the tuner spends all their dyno time chasing gremlins.

 

The MS3 Pro is the same circuitry as an MS3x but all surface mount and fully potted instead of a bare PCB and a bag of solder yourself components. Be sure to buy the full version of the TunerStudio MS and megalog viewer software. They're worth every penny. Especially their autotune features. My fuel map started out as a really rough basemap, and with nothing but a lot of hours of driving around with autotune on, a bit of cranking/warmup enrichment tweaking, and a bit of IAT correction between cold and hot weather it's really solid now.


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#31 1j240z

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Posted 28 September 2013 - 07:20 PM

Awesome, thanks for the input.  Im really looking forward to getting it installed.  Im not worried about soldering either, I have to do it from time to time at work so I have some experience with that.  I also work with wiring so that is not a problem either.  Once its running I will post a video of it on here.


73 240z- Stroked/bored L31, built head, stage 3 cam, triple webbers, 5 speed KA swap.  (1JZ VVT-I being built to go in the car now!)


#32 Radial

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Posted 29 September 2013 - 04:05 AM

Its starting to be alot of 1JZ and 2JZ VVTi's running MS3 and MS3 Pro now... I have seen alot of threads about management of the VVTi-system.

 

Managing VVTi needs some serious skills though, as its RPM and MAP based. None of that information is "easy to access".



#33 swim

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Posted 30 September 2013 - 07:34 AM

^dafuq?

 

I'm not sure what you mean by easy to access, cam phasing on an rpm vs load map is hardly exotic.

the only pain about VVTi is that it needs to be closed loop control for it to work right but once it's implemented correctly, tuning it isn't difficult.


It had been two weeks since the 7M had finally locked up in his parent’s driveway. Jason lit a fire in the Venture’s 3400 on the way to work. He had to get there. He had to get to Final Bout2, somehow. Clearly, the Cressida wasn’t going to cut it. He was certain of that. He just didn’t want those cretins to be right. He didn’t want to be a Johnnycomelately. They didn’t need to know though. He could keep this under his hat. -- Crab Spirits


#34 Radial

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Posted 30 September 2013 - 08:55 AM

OFC it's easy when you knoew the spec, but do you have the cam phasing, map and rpm specs for a 2J VVTi?

I have not seen any hanging around ;)



#35 swim

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Posted 30 September 2013 - 10:02 AM

once you set it up so the ECU can hit it's target cam angle, the "spec" is whatever you want it to be.

this is akin to asking for a "spec" for boost pressure based on TPS% and RPM. or fuel based on MAP and RPM, or timing advance for load and RPM.


It had been two weeks since the 7M had finally locked up in his parent’s driveway. Jason lit a fire in the Venture’s 3400 on the way to work. He had to get there. He had to get to Final Bout2, somehow. Clearly, the Cressida wasn’t going to cut it. He was certain of that. He just didn’t want those cretins to be right. He didn’t want to be a Johnnycomelately. They didn’t need to know though. He could keep this under his hat. -- Crab Spirits


#36 HotTrash

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Posted 24 October 2013 - 07:15 PM

That's BS. Any current standalone worth a shit will control vvti. Don't be a peasant. Spend some money.  

this made me laugh so hard. Ty mark I need this how much I owe you
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#37 swim

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Posted 24 February 2014 - 04:30 AM

bumping this up, because now I'm starting to worry about my x8's setup

I was planning on doing 550cc injectors, intake, FMIC, the kinugawa stock location 60-1 or tomei ARMS, Ace-Up turbo elbow,  a 3" straight pipe, replacing the electronic BPV with a normal one, and probably tomei poncams.

 

motor came with an auto harness/trans/ECU, but they dicked me on the igniter and MAF.

by the time I find a JZX100 M/T ECU, get a MAF, decent piggyback (probably AEM F/IC I guess), I'd have been way better off just going MS3pro from the start, right?


It had been two weeks since the 7M had finally locked up in his parent’s driveway. Jason lit a fire in the Venture’s 3400 on the way to work. He had to get there. He had to get to Final Bout2, somehow. Clearly, the Cressida wasn’t going to cut it. He was certain of that. He just didn’t want those cretins to be right. He didn’t want to be a Johnnycomelately. They didn’t need to know though. He could keep this under his hat. -- Crab Spirits


#38 Kyle

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Posted 24 February 2014 - 08:13 AM

igniter can be found at any junkyard, I'll sell you a maf for a good deal, auto ecu works fine. Soarer auto ecu in my daily right now. Ask demesio to sell you his emanage. 


Maybe it's a cultural thing? I mean, we saw the British coming. India, they did not.

#39 swim

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Posted 24 February 2014 - 08:16 AM

I have an igniter kicking around too I'm pretty sure.

I've read about stalling issues with the JZX100 A/T ECU when you manual swap, pushing the clutch in at idle.

AEM F/IC would be nice because you can use it to transform a speed input to keep the ECU happy with the trans swap.


It had been two weeks since the 7M had finally locked up in his parent’s driveway. Jason lit a fire in the Venture’s 3400 on the way to work. He had to get there. He had to get to Final Bout2, somehow. Clearly, the Cressida wasn’t going to cut it. He was certain of that. He just didn’t want those cretins to be right. He didn’t want to be a Johnnycomelately. They didn’t need to know though. He could keep this under his hat. -- Crab Spirits


#40 Demesio

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Posted 24 February 2014 - 10:28 AM

I'd let it go for 400 shipped. Kyle put down some good numbers with it.




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