e-manage question

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95 kat
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Car: 95 240sx

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is there any way that I can hook or tie in a wideband into the emanage blue. I wasnt sure and the more I search the more confused I get. Thanks for your help.


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fiznat
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Not to the blue you cant. You can though, with the new "Ultimate" version.

There are plenty of standalone wideband O2 gauges though, even setups that datalog.

95 kat
Posts: 136
Joined: Sun Sep 25, 2005 6:47 pm
Car: 95 240sx

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ok just about to invest in one. Wasnt sure and the more I read the more I got confused. Thanks man!

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Chezedik
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Sorry for the thread-jack, but where do you get emanage with the baseline program for the KA. I know it's everywhere for the SR, but more displacement = bigger pen15. So I need it for KA. Anyone?

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fiznat
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IIRC the emanage only comes with a KA-T tune if you buy it along with the KA-T kit from greddy. Otherwise, the tune is all on you...

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virus77
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Car: 95 S14, 71 240z, 97 e320

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I heard the stock greddy tune is junk anyways so you should get it tuned for your setup.

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Chezedik
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It would be nice to have something to drive it there with.

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virus77
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Car: 95 S14, 71 240z, 97 e320

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set the injector correction to whatever your injectors are and you're good to go. The car will drive like stock, just dont get onto any boost, its not that hard. I drove about 20 miles like that till I got the car home and started the tuning process. I had my wideband at the time and the cruising A/F's are fine.

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Chezedik
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Oh yeah, forgot for a second that it's a piggyback. That would probably work fine, then tune it with a wideband. Do you need to dyno tune for timing control (or does it allow timing control)?

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virus77
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I tuned my car on the street but I wouldnt recommend it. In order to tune for timing I would suggest finding out what kind of total timing numbers you car is putting out and then going from there

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Chezedik
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Car: 1991 Nissan 240sx

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Just by using the stock map and then removing some? Where do you get a stock map?

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virus77
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Car: 95 S14, 71 240z, 97 e320

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I got my timing numbers using a OBDii scan tool, Im not sure if you have an s14 or s13 but there are still tools that will allow you to check your cars total timing numbers. Anyways since the emanage is a piggy back you just input what degrees of retard you want on a RPM vs. Load map. and it adjusts the factory maps accordingly. I used a map sensor and not the mafs to tune, so i just set it up to starting retarding timing after a 6 psi to achieve an end result of 16-17 degrees total timing at WOT. The car on the stock ecu was runnin 22 degrees at 15 psi so I ended up talking out around 6-7 degress of timing in the upper boost levels and less retard in the lower boost accordingly. If you need any help along the way let me know man, Ill get on AIM if you need it.

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Edub1
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Joined: Thu Nov 10, 2005 2:20 pm
Car: 89 240sx KA-T

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Could you elaborate a little on your timing retard under boost?

You are stock up to 6lbs and then...?

Also, how does the Emanage handle the switch from MAF to the pressure sensor?

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C-Kwik
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Car: 2013 Chevy Volt, 1991 Honda CRX DX

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virus77 wrote:set the injector correction to whatever your injectors are and you're good to go. The car will drive like stock, just dont get onto any boost, its not that hard. I drove about 20 miles like that till I got the car home and started the tuning process. I had my wideband at the time and the cruising A/F's are fine.
When I had a KAT with e-manage, I ran it strictly on the injector correction and a light timing retard at the higher end of flow and RPM. But I would probably avoid doing this at moderate to high boost levels...or at least anything that you are still using the Stock MAF for. With the MAF flow signal altered, the ECU thinks you have less load and advances the timing to take advantage of a 'lighter load'. Also since you can boost at part throttle, the ECU will use the O2 sensor for feedback and try to adjust the A/F. Tuning at WOT will generally be fine, but boosting too much at part throttle may cause a leaner mixture than is safe for the motor.

The E-Manage Ultimate(from what I've read) would be a solution for this as it drives the injectors entirely instead of allowing the ECU to do it. The ECU could no longer fight the piggy-back, which has long been the problem with piggybacks.

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Edub1
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Car: 89 240sx KA-T

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Does the blue drive the injectors & timing if you have the pressure sensor and ignition/injector harness?

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C-Kwik
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Edub1 wrote:Does the blue drive the injectors & timing if you have the pressure sensor and ignition/injector harness?
No. The blue can add fuel injector duty cycle, but can not trim the duty cycle directly. Only through the MAF signal. It can advance or retard timing though. The ultimate allows you to bypass the ECU entirely as far as the injectors are concerned.

The more I read about the E-Manage Ultimate, the more it reminds me of the hybrid Tec-II install I read about years ago. The ECU handles all the emissions and secondary functions, but the Tec-II had control of all the fuel related components.

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Edub1
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Car: 89 240sx KA-T

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I see what you're saying C-Kwik. But if you run the pressure sensor I think it will take over when it senses boost. Even if there is some modest boost durring closed loop the O2 sensor will pick it up and add fuel. Plus you can retard timing if you are aware of the condition.

The Ultimate is just so damn expensive.


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