Engine Management

[turtl631]

I've been trying to research engine management for the KA, but nothign has been very conclusive. I know AEM EMS is the best, but its expensive. I want a very reliable setup, maybe a max of 320 whp with alcohol (hi boost) and around 250-260 daily. THe main options seem to be JWT ecu and/or SAFC, and emanage. If anyone is reliably running either setup at power levels above 250, could you comment on how you like it and if you would do anything different if you started over? For now, I'm planning to run 550s or 50 lb.s, z32 MAF, T3/T04E 50 trim, and whatever manifold turns out to be good (SSA or IAP prolly). I know that management has been covered a lot on this forum, but it does seem to be very important, so a nice overview thread where people post what they're using and how its worked for them would be pretty helpful to n00bs like myself Thanks!

[Checkered-Member]

Very Reliable = Very Expensive:)

So your options are Stand Alone, the soon to be out EMS, Or E-manage with ALL the goodies

If you want reliability at a lower cost :thumbdJWT ECU:thumbd will be the way to go.

How much are you willing to spend on engine management?

[MarkEmark]

Very Reliable = Very Expensive:)

So your options are Stand Alone, the soon to be out EMS, Or E-manage with ALL the goodies

If you want reliability at a lower cost :thumbdJWT ECU:thumbd will be the way to go.

How much are you willing to spend on engine management?

Why the thumbs down for the JWT ECU? I don't see a JWT ECU in your mod list.

They're not THAT bad...they're tuned a bit conservative, but that's for a reason--so retards don't blow up their engines. a JWT ECU with piggy back fuel management like SAFC-2 will be hard to beat unless you try the super-expensive standalone units.

[eyustfu]

im running JWT's 72lb program with an SAFC-2 thats tuned with a wideband and it works great. i would recommend it, however it runs really rich without the afc thats after about 4500 at WOT

[turtl631]

Well, I'll pay quite a bit for a system that will assure that my engine doesn't detonate to death...but $2k for EMS with MAP, IAP, is a little much I plan to get a wideband to tune, so I guess the 2 main options are emanage or JWT+SAFC. What goodies are you referring to with the emanage?

[Checkered-Member]

What goodies are you referring to with the emanage?

Support tool (for laptop, programs the e-manage) OR GReddy E-01 which is a boost controller and an e-manage programmer.Ignition harness (control timing)Injector harness (control injector duty cycle)Pressure sensor (eliminates the need for a bigger MAF)

All in all will run you 850 bucks herehttp://www.mohdparts.com/emanage/index.html

for 850 you get stand alone like functionality

as soon as I get smoged in October, I’m getting just that

[turtl631]

Hm, cool. Yeah i have a laptop so screw the E01, that screen is too big and ricey too. JWT plus SAFC would prolly cost about that much or a little more I'd imagine. If anyone who's using these setups could post their whp and wtq numbers and what management, that would be cool

[Checkered-Member]

Hm, cool. Yeah i have a laptop so screw the E01, that screen is too big and ricey too. JWT plus SAFC would prolly cost about that much or a little more I'd imagine. If anyone who's using these setups could post their whp and wtq numbers and what management, that would be cool

I would do a search, there are quite a few people using it…

And JWT ($500) S-AFC II ($300) =800

E-manage with goodies = $575

[TurboKA37]

if you shop around on ebay you can get the E-01 for $370 shipped new in box. i just bought one earlier this week. also i hear there is no need for the injector harness because you can use the extra wires that come with the ignition harness as the injector harness.

[C-Kwik]

I would do a search, there are quite a few people using it?

And JWT ($500) S-AFC II ($300) =800

E-manage with goodies = $575

As good as the E-Manage is, it's still only a piggyback. It will be fighting the ECU in closed loop mode. Running a JWT designed for the injectors you are running will fight any piggyback a lot less. I used the E-Manage and was quite happy with it, but I won't say it's the best thing out there.

[Projex240]

CHeckered member is the guy with a boost gauge and no turbo...

that should say enough. I get tired of hearing people bad mouth JWT--mostly the ones that dont have JWT ecu's and also--not turbocharged.

JWT= a VERY good alternative to standalone. It has conservative(but not too conservative) maps for the everyday driver. You can tune it a bit with an afc, but you sacrifice what reliability you had. Id rather make230 on 7-8 psi than 260 on the same lbs and have more chance of detonating and messing my motor up. 30(and most times less hp than that) isnt worth it.

JWT with a cobra maf, 50 lbs(youll need a fuel rail), and a fuel pump(walbro), and youll have enough safety and fuel to get to mid 300's easy.

GOOD LUCK!

BTW--i have jwt's ecu--and so does klatter--and orion--klatter makes over 400 to the wheels on his daily driven car, and orion runs 12psi on his stock block ka with a jwt ecu and 50 lbs---

dont discount JWT REGARDLESS of what others say.

-Josh

[turtl631]

Excellent, thats what I wanted to see-real people with experience with a certain unit. I still think it would be helpful to have the SAFC to fine tune it, no? I definitely want to get a wideband, at least to tune in the beginning, and I'm kind of intrigued by having a dual stage boost controller and alcohol injection so i could have a low boost daily setting and then a high boost weekend setting and not really worry too much about detonation. Thanks for all the replies, this has been pretty helpful. Lol at the boost gauge with no turbo

[Projex240]

Its fine to have an afc to fine tune with. I have one--but its for monitring other things(like maf voltage and etc..I have it zerod out for now. The jwt ecu will have you at about11:1 to 11.5:1 on the a/f ratio. perfect tuning for a turbo is about 12.5:1. The point lower in the a/f should only show about a 8-12 hp decrease over the whole rpm band. For the extra 8 HP--ill leave it where its at until I get the moto built. Then ill tune with an afc to get the a/f to exactly 12.5:1ALso--that wideband is a good idea--youre on the right track so far. I like the lm-1 wideband from innovativehttp://ka24de.com/you can go there to get a price on it.

even still though--I think its better to tune on the dyno. They use widebands, and the car is in an enlcosed area and it makes it a bit easier to hear if something starts to detonate.TO be really honest though, unless you are a hands on kind of guy, then you dont need any of that. just buy the ecu. Plug. Play.

Thats all. Sit back and enjoy the boost:)

[Snail Tuning]

not trying to thread jack, but this goes along with enginemanagment and i didn't want to make a new thread about basicly the same thing.

with the JWT ECU is it posible for the user to retune the ECU?

in my honda i use a program called uberdata that has the fuel maps and ignition maps in 16x16 tables and i can adjust the fuel accordingly. is their a program and an emprom burner that will work with the JWT sense it has the be basicly the same thing.

also is their any program similar to uberdata/hondata in the nissan world?or has anyone ever tried to use uberdata in their nissan?

[TurboKA37]

the JWT ecu is a stock ECU reprogrammed/reburned by JWT. if JWT and hack into it and change the settings then there must be a way but there are no programs or eprom burners on the market specifically for nissan ecus that i know of. and if you did find one then you could just use the stock ECU because thats what JWT does. answer is no

[WDRacing]

Here's a quicky..whats the highest WHP KA running for engine management right now? I believe its a JWT ECU.

The JWT is an awsome bolt on fuel/ignition combo. Sure the timing and AF curves are conservative, but your only looking for 260hp daily and 320 on alky. Sounds like you answered your own question to me.

I want to see someone who has proof that the JWT ECU runs worse then the stock map Greddy Emanage.

Don't believe everything you read on the internet. People will misquote all the time. JWT has been doing forced induction for YEARS....

[Boost_Veteran]

Here's a quicky..whats the highest WHP KA running for engine management right now? I believe its a JWT ECU.

I'm pretty sure I know who you are talking about, but I'm pretty sure his number has been beaten . . . but if not it will be real soon. They people doing it are running Autronic . . .

[WDRacing]

Your missing the point....

[Red-KAT]

Hm, cool. Yeah i have a laptop so screw the E01, that screen is too big and ricey too. JWT plus SAFC would prolly cost about that much or a little more I'd imagine. If anyone who's using these setups could post their whp and wtq numbers and what management, that would be cool

Hmm...

What you need to look at is features for the $. And as far as I can tell the E-Manage, E-01 setup with all the extras was the best option. (Before the EMS)

I have ALL the Greddy E-Manage and E-01 stuff... (except the remote switch)

You say that the E-01 looks to rice... But I can monitor every aspect of the E-manage right on my dash... and change it all with the push of a few buttons. PLUS its main funtion is to control boost... The E-Manage alone does nothing about boost. It does a very good job at making boost fast.

Management is the 1st and most important thing in the quest for power. (at least I think so)

Once I finish my clutch and fuel system I'm going to a dyno-tune.

Not like HP-TQ mean that much when we all have a diff turbo setup.

[turtl631]

I don't necessarily want to monitor everything constantly tho. I think I'll try the JWT when I go turbo. Tuning isn't something I really wanna DIY on my car, jsut not even skill.

[Boost_Veteran]

Your missing the point....

If you are referring to me . . . . not really. Just clarifying.