engine managment

[silviaone1]

what is everyone running for engine managment for you ka-t. i heard that the jim wolf ecu is a piece of crap, whats you view on that if any.

[C-Kwik]

Several are running JWT ECU's with no problems. There are a few running over 300 HP. I'd hardly call it a piece of crap. Many who oppose it are those who like stand-alone systems. As for me, I am running a E-Manage to control the 370cc injectors. When I upgrade injectors further, I'll probably run a JWT piggybacked by the E-Manage. Or if I actually run into a lot more money, the TEC3 is awfully nice.

[Structure240sx]

im just gettin my rebuild started for my KAT project. i'm planning on running a jwt ecu b/c im goin to be using 72lb injectors. the new apexi safc and emanage can only trim down 50% which wont be enough for me. and im nowhere near able to tune a standalone or willing to pay to have one tuned. if using 370cc injectors a piggback system is a great way to go in my opinion.

[encasemyheart]

IMHO something like a JWT would be good to make a baseline program for the injectors, treat it like the stock program, and use a piggyback on top of it. It would lean plus or minus 50% ON TOP of the map that supports the 72# injectors...of course for the price of a JWT + AFC you can just get a PowerFC and be done with it for life.

I have a question: Is there some real reason the AFC can't change the mixture more than 50%? The wire is completely intercepted by the AFC so the way I see it is the AFC could tell the ECU anything it wants...or is it just so they will sell more Power FCs?

[C-Kwik]

Well that is one reason to still go with a JWT. Even larger injectors. Not to mention a higher rev limit and no speed limiter.

As far as the AFC, I think the issue with going more than 50% is because larger injectors are harder to drive. Both the AFC and the E-Manage only change injector pulse by telling the engine it is getting a different amount of air. It does not intercept and change the injector signals. Though the E-Manage can add to the existing signal, it can not trim it down other than by altering the airflow signal.

[encasemyheart]

ahhh...okay.

And good point about the rev/speed limiter removal, but I believe you can do this with the PowerFC, in fact I'm sure you can. I don't particularly like reprograms for alot of reasons.

Is there anything else that will remove the speed/rev limiter for cheap? I'm talking without wire cutting and sensor unplugging...

[WDRacing]

I'm going to take my next motor project right to JWT and have it tuned. Should be one of the quickest KA's in the world. Course, I'm just building it for a close friend. She'll have to be the pilot.

WD

[syka24et]

I used to think that it was junk to but i have to eat my words, I'm going with the jim wolf ecu, 72lb injectors and afc with a q45 maf. I wanted 400 hp and figured i would have to go stand alone but I see many ka-t's with them. Seems like a good alternative cost wise.

[EZcheese15]

Yeah, I have to say I love the JWT ECU. I've never owned one, but I think they are wonderful. They are great for guys who don't know about tuning, or don't want the risk of tuning the car themselves. The only reason people don't like JWT is because they run slightly rich, which is not 100% optimal for power. However, if you were JWT, sending out hundred's of ECU's, wouldn't you want to make sure all your customers didn't blow their engines? Makes sense to me.

And like mentioned, if you use a JWT with a piggyback, you have a solid baseline, and can adjust the little richness there is left out of the system.

[matt0941]

Oh man WD is gonna make fun of me because I drilled at this whole fuel management thing a couple months back but now I am drawing a blank.

But I am having trouble the whole concept of the E-manage system and profec e01 (can anyone explain what the hype is). I don't see why people are steerying away from the S-AFC.

[EZcheese15]

Because the Emanage is only slightly more expensive, but gives a lot more options.

The Emanage is adjustable with a laptop. Also, it comes preset with recommended fuel curves for nearly every japanese engine. You can drop in bigger injectors, change the injector size in the software, and it recalculates an entire new fuel map (well, as a base line, I wouldn't necessarily keep it).

It's not that the SAFC isn't any good....it's that the emanage is a ton better, for just a few more $$.

[syka24et]

yeah seems to me the only advantage the safc has is it can plus or minus 50% to the e-mange 20%.

[C-Kwik]

Also, it comes preset with recommended fuel curves for nearly every japanese engine.

There are? Where? I haven't seen them. I'm sure there are some out there by now as maps are easy to share, but I haven't seen any indication that there are preprogrammed maps. Nor have I heard anything like this on the E-Manage mailing list.

[matt0941]

So the e-01 would serve as a replacement to the laptop? I mean in addition to being an electronic Boost Controller, etc.

[EZcheese15]

So the e-01 would serve as a replacement to the laptop? I mean in addition to being an electronic Boost Controller, etc.

Correct, as far as I understand.

[EZcheese15]

There are? Where? I haven't seen them. I'm sure there are some out there by now as maps are easy to share, but I haven't seen any indication that there are preprogrammed maps. Nor have I heard anything like this on the E-Manage mailing list.

I don't have any real first hand knowledge of the emanage, but i played around with paul's for a few mins. I could swear that he showed me that. Maybe it was something else. Hmmmm. Need to get Paul into this thread.

[Maeda]

can the e-01 scale the fuel map according to injector size!?like how it works on the laptop? or is that a laptop only kind of deal...?

hmm.... i was under the impression the e-01 did everything.

[EZcheese15]

can the e-01 scale the fuel map according to injector size!?like how it works on the laptop? or is that a laptop only kind of deal...?

hmm.... i was under the impression the e-01 did everything.

I haven't actually seen the E-01, but my impression is that it works exactly like a laptop.

[Bryson]

Well for my fuel management I am going with the e-manage, profec B, and a laptop. For the price of the e-manage and e-01 (around 800-900) I will now be getting some I can useoutside the car and has a real screen. e-manage /w support tool (350-400)laptop (345 shipped)profec B (200-300)

aqs you can see it comes out almost the same as the e-manage/e-01 and this way you end up with something much more useful.

well there you have my .02