what would be the advantages of using an Emanage w/ a JWT ecu (8.5compression, 370's), vs, a stock DET ecu? speed cut, rev limit?

also, if using an SAFC w/ a JWT, can you hook up a MAP sensor to the SAFC?

what kind of wide band 02 sensors can be purchased to run if using something like TEC II or III?


the reason for all these questions is my incon setup is almost complete and I'm debating engine management.

I have JWT, 370cc, 3 bar (no EGR, rear 02)

i will be using 72LB, Z32 maf, S4 prog. (want daughterboard for drag launch)

cant decide between JWT+AFC or E-Manage+e01
my car is daily driven
(sorry so long!!!!!!)

The advantages of using a emanage/safc with a JWT is fine tuning. The JWT runs rich so you could use it to lean it out a bit for some ponies. Granted at your own risk...

Wideband o2..search I've seen those posts lately on brands/what do buy. check out a EGT + apex TT too.

I would go emanage its more more tunable that the safc and has more bells n whistles. i think you can only adjust to like 50% add to your injectors. The Emanage is like 100 or something.

Someone else chime in...

well, you could just run the JWT alone and be done with it. Why do you want to add the other piggy backs? Sure, you can tweak it but be careful you don't blow the motor up looking for that extra couple HP.

Concerning widebands, I know a few DSM guys that have a wideband monitering system in there cars. Not cheap though... I think there was a group buy going for about $650.

Khiem

i've got a apex TT ordered, and I'm in the techtom GB, would the E-manage be fine to use w/ 72LB inj?, my JWT is prog. for 370's.?

I'll prob send my ecu back for reprog. then buy an Safc to lean it out down low.

with the apex TT, I'll see A/F ratio, 02 voltage, with the CMX-100, I'll see inj duty cycle, maf voltage, and I'll have the features of the AFC. I guess i need an EGT gauge, anything else i should look into for tuning purposes?

thanks

I'm outta this one.

JWT is your safe bet but you couldn't give me a JWT ECU, thats just me, I love my SAFC and is completey drivable.

Oil pressure gauge???

I'll just pay the 100 bucks for the prog change, to have a good base map, then i could use the AFC to get the most out of it. i understand your point charlie, but i doubt that i am half the "tuner" you are. I gather most of my "tuning" knowledge from this forum. (i listen to you for AFC info;) )

your gonna have a killer setup when your done...sheesh!

what do you do for a job? IIRC your only 19 right?

as for the other tuning things...oil pressure, oil temp, water temp....just to keep things in check; my 2cents

i hope to, about the age thing, yes I'm 19, I'm back in school at the moment at USC, before school i was a operations manager @ Santa Fe Logistics, a trucking and warehousing co.

back to the nissan, I wouldnt blow it up w/ an SAFC, it would only be used on the dyno, and i should have enough monitering equipment in the car, so that i could see something was wrong before it "blew up".

72s are too big of a jump for an ECU set up for 370s. You can easily get away with 50s, though, as long as you keep it to 3 bar of fuel pressure. Otherwise, you need to have JWT set it up.

This debate never ends, but here's my $0.02US: Get the JWT ECU set up for 50s at 4b. That's plenty of juice for over 400 WHP, by the way. At the same time, add the S4 idle program and drag launch program, since a single service session is a single fee, not a per-feature fee. The rub would be that you get 72s instead, run them at 3b, and use the S-AFC or e-Manage to compensate. You still have low-RPM problems with pulse width management, though...it's the price you pay to run 72s.

You can tune 72lbs. with the Emanage no problem.

Originally posted by CowboyDren
72s are too big of a jump for an ECU set up for 370s. You can easily get away with 50s, though, as long as you keep it to 3 bar of fuel pressure. Otherwise, you need to have JWT set it up.

This debate never ends, but here's my $0.02US: Get the JWT ECU set up for 50s at 4b. That's plenty of juice for over 400 WHP, by the way. At the same time, add the S4 idle program and drag launch program, since a single service session is a single fee, not a per-feature fee. The rub would be that you get 72s instead, run them at 3b, and use the S-AFC or e-Manage to compensate. You still have low-RPM problems with pulse width management, though...it's the price you pay to run 72s.

if I'm sending the ecu back anyway, why not get it prog for the 72's??? why would i get it prog for 50#4bar, and then run 72?

You're right. Not sure what I was smoking that day...

Honestly, I'd be pretty damned happy with 50s@4b, but I'm me and you're you. :D

Originally posted by CowboyDren
This debate never ends, but here's my $0.02US: Get the JWT ECU set up for 50s at 4b. That's plenty of juice for over 400 WHP, by the way. At the same time, add the S4 idle program and drag launch program, since a single service session is a single fee, not a per-feature fee. The rub would be that you get 72s instead, run them at 3b, and use the S-AFC or e-Manage to compensate. You still have low-RPM problems with pulse width management, though...it's the price you pay to run 72s.

The drag launch is not a normal reprogram, it requires the daughterboard. I don't know anyone with a problem with the 72s..? why is this rumor still propagated? There were some teething issues when the program was being developed, but every car i've been in with them seems just fine. A lot of the funny drivability stuff was due to Aaron's car's too-short MAF tube (not normal). Why are people so worried about being able to tune once they get a JWT ecu? I bet half the people who say stuff like that would never think about tuning again after driving a 350hp JWT car. It really is that good. Drivability is like stock. I'd wager that most people who want to use an AFC with a JWT box just want it for the rice factor. If you don't spend quality dyno time you're just dicking around with a program that is already very refined, and likely aren't going to make any real improvements. IMHO.

andris

Originally posted by ITR_KILLR
i've got a apex TT ordered, and I'm in the techtom GB, would the E-manage be fine to use w/ 72LB inj?, my JWT is prog. for 370's.?

I'll prob send my ecu back for reprog. then buy an Safc to lean it out down low.

with the apex TT, I'll see A/F ratio, 02 voltage, with the CMX-100, I'll see inj duty cycle, maf voltage, and I'll have the features of the AFC. I guess i need an EGT gauge, anything else i should look into for tuning purposes?

thanks
The emanage will show you everything. Maf voltage, O2 voltage, injector duty cycle and some other little things as well. It also allows you to datalog for 3 min i think. Also you can zoom in and extrapolate the info by graph or table. Its very handy, my brother is using it right now in his 1jz w/ 550cc inj. It hands down beats the AFC. Im just too lazy to get rid of mine for it.

Emange is tight, or u can say fuck it all and break away from the pack and run a Haltech. http://home1.gte.net/res0ootu/416@18psi.jpg this guy did that at 18psi and on pump gas. If ur goin to go all out and hell most people do just go get a stand alone and get full control. Spend 1 hour on the Dyno and get that thing running like a champ.

honestly, i would go stand alone, but i don't think i could tune it properly, and I live in SC, although i do know of a dyno facility that has a wide band, but its a mustang shop (figures) everyone says, dont try to "tune" if you aren't 100% sure of your skills, so I'm just being honest. (plus, i wouldnt have any help):( .

Heres is my opinion. You dont even have the car running yet. Get your car runnign with the 50# 4 bar program. Dyno at 400 whp and "get used to driving a a fast car". And then "only then" start thinking about going bigger.

I already have the 72's, but what i am going to do is get used to the new turbo, before adding S4's, sprockets, etc.

in the mean time, I'm gonna shut up about the damn thing, until i get all my parts back and get it put together!!!