ECU Upgrade
#41
Does the Apexi rEmove the rev lim?...
I was wondering if the Apexi below actually removes the limiter...
http://www.rev-industries.com/apexih...speedmeter.htm
A previous thread seemed to indicate that it doesn't... If it does, then it's a great deal (cheaper than the questionable Jet & also has performance-meter functions similar to the G-Tech)
Thanks,
G
http://www.rev-industries.com/apexih...speedmeter.htm
A previous thread seemed to indicate that it doesn't... If it does, then it's a great deal (cheaper than the questionable Jet & also has performance-meter functions similar to the G-Tech)
Thanks,
G
![Cool](https://maxima.org/forums/images/smilies/cool.gif)
#42
Re: Does the Apexi rEmove the rev lim?...
Originally posted by 02MaXiMa_GLE
I was wondering if the Apexi below actually removes the limiter...
http://www.rev-industries.com/apexih...speedmeter.htm
A previous thread seemed to indicate that it doesn't... If it does, then it's a great deal (cheaper than the questionable Jet & also has performance-meter functions similar to the G-Tech)
Thanks,
G
I was wondering if the Apexi below actually removes the limiter...
http://www.rev-industries.com/apexih...speedmeter.htm
A previous thread seemed to indicate that it doesn't... If it does, then it's a great deal (cheaper than the questionable Jet & also has performance-meter functions similar to the G-Tech)
Thanks,
G
![Cool](https://maxima.org/forums/images/smilies/cool.gif)
#43
Re: Re: Does the Apexi rEmove the rev lim?...
Originally posted by max'n out
Kevs the one that said it. But why get it? All it does is lose the limiter, do you need to go faster than 130?
Kevs the one that said it. But why get it? All it does is lose the limiter, do you need to go faster than 130?
![laugh](https://maxima.org/forums/images/smilies/laugh.gif)
#45
Re: Re: Does the Apexi rEmove the rev lim?...
Originally posted by max'n out
Kevs the one that said it. But why get it? All it does is lose the limiter, do you need to go faster than 130?
Kevs the one that said it. But why get it? All it does is lose the limiter, do you need to go faster than 130?
Well the docs say it also removes your rev-limiter (not just the speed limiter). Could this mean shifts at higher RPMs for us automagicians?...
And you also get the G-Tech-like performance meter options
![Big Grin](https://maxima.org/forums/images/smilies/biggrin.gif)
If it works as described, you won't need to hit the track to get your 1/4 times
![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
G
![Cool](https://maxima.org/forums/images/smilies/cool.gif)
#46
Re: Re: Re: Does the Apexi rEmove the rev lim?...
Originally posted by 02MaXiMa_GLE
Well the docs say it also removes your rev-limiter (not just the speed limiter). Could this mean shifts at higher RPMs for us automagicians?...
And you also get the G-Tech-like performance meter options
If it works as described, you won't need to hit the track to get your 1/4 times
G
Well the docs say it also removes your rev-limiter (not just the speed limiter). Could this mean shifts at higher RPMs for us automagicians?...
And you also get the G-Tech-like performance meter options
![Big Grin](https://maxima.org/forums/images/smilies/biggrin.gif)
If it works as described, you won't need to hit the track to get your 1/4 times
![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
G
![Cool](https://maxima.org/forums/images/smilies/cool.gif)
#47
Re: Re: Re: Re: Does the Apexi rEmove the rev lim?...
Originally posted by max'n out
Ive heard of raising the rev limiter but never removing it. I don't know what the hell that means, tha'd be like the enging just keep going and not shifting.
Ive heard of raising the rev limiter but never removing it. I don't know what the hell that means, tha'd be like the enging just keep going and not shifting.
![redbounceflame](https://maxima.org/forums/images/smilies/redbounceflame.gif)
Later,
G
![Cool](https://maxima.org/forums/images/smilies/cool.gif)
#48
Originally posted by Jeff92se
You DO know that ignition and fuel map changes are MUCH different for na maximas vs supercharged ones right? So if you are using a JET chip that is for NA maximas on your SC'd maxima that makes me VERY concerned.
ie.. you can't use a na JWT chip w/ a SC 4 gen because the timing maps would make the sc maxima detonate like crazy. Our ecus do not know what "boost" is w/o someone programming those varibles into the maps before hand.
You DO know that ignition and fuel map changes are MUCH different for na maximas vs supercharged ones right? So if you are using a JET chip that is for NA maximas on your SC'd maxima that makes me VERY concerned.
ie.. you can't use a na JWT chip w/ a SC 4 gen because the timing maps would make the sc maxima detonate like crazy. Our ecus do not know what "boost" is w/o someone programming those varibles into the maps before hand.
First, to the comment above, they didn't change ANYTHING therefore it will work fine, EXACTLY the same as before you sent it in except they charged you $$ for nothing. I wish I could get the checksum from the ECU, then send it to JET, and then verify they didn't change anything.
Second, if they reprogrammed the ECU, I'm pretty sure the ECU would have to be reprogrammed to match the code that the NVIS uses to start the car. Basically, if all three components(key, key cylinder, ECU) don't match the car doesn't start. It is posible it's sector programmable or kept on a different chip so it can be stored/programmed individually, but I doubt it.
Third, if JWT could NOT do it sucessfully, then there is no way in hell someone else would be able to do anything worthwhile. JWT has more experience than anyone on Nissan ECUs and they would be the first to market a worthwhile product. I heard a RUMOR from Cattman that JWT could modify the flash on the ECU, but once you disconnected power it was lost. I'm not sure how they program just the flash and not the EPROM.
Fourth, the A-VFC/V-force/Any other piggy back ECUs are a BAD idea. All they do is "TRICK" the input/output signals to the ECU and cause it to modify the fuel, timing, etc... This works to a point, albeit SMALL. If they actually modify the signals too much, your ECU will freak out and override/compensate otherwise it will go into limp mode and the MIL will come on. The ONLY way to sucessfully accomplish this is to take the output signals from the ECU, drive the output signals lower/higher, and then modify the inputs back to the ECU. This sounds simple, but you better have some SERIOUS logic for protection, otherwise your basically overriding all of the ECUs protection measures the Engineers spent years painfully figuring out on testbeds, dynos, and proving ground test trials.
Fifth, PLEASE email, write, call, stop by, JWT to ASK/BEG/PLEA for them to reconsider spending more R&D on our ECU. I don't think it's 100% impossible, but the problem is that it's going to take a lot of interest from Maxima owners to make JWT take on the expensive process of R&D for 2-years worth of Maximas. It's just NOT worthwhile business wise, unless there is a lot of interest.
P.S: What a beautiful SCAM! People send them $400 and their ECU, then they keep it for a day while doing NOTHING to it, and then ship it back to you. Who would notice? Only TRUE enthusiasts who would dyno BEFORE AND AFTER to prove it!
I love this board!
#49
Re: Re: Does the Apexi rEmove the rev lim?...
Originally posted by max'n out
Kevs the one that said it. But why get it? All it does is lose the limiter, do you need to go faster than 130?
Kevs the one that said it. But why get it? All it does is lose the limiter, do you need to go faster than 130?
Oh, and the jet chip people are full of sh*t! They just want to make money. I'm not saying that it doesn't work, but they can't even give us straight answers so screw them. I wanna see dynos. Is it true that it doesn't remove the speed limiter? Kev, mabey you can field this one.
I hear the Haltech ecu is absolutly sick. Don't know much about it except that it needs to be carefully tuned.
#50
Re: Re: Re: Does the Apexi rEmove the rev lim?...
Originally posted by Dan4614
\
I hear the Haltech ecu is absolutly sick. Don't know much about it except that it needs to be carefully tuned.
\
I hear the Haltech ecu is absolutly sick. Don't know much about it except that it needs to be carefully tuned.
#51
Re: Re: Re: Re: Does the Apexi rEmove the rev lim?...
Originally posted by max'n out
Haltech is sick. It's a brand new ecu. You start by tuning it on the dyno, then you move to the street and tune it via a laptop in real time. But they have no base program. So on top of the 1145 base price you alos need another 200 bucks of parts and at least 8 hours of tuning. And real if you don't have a good bit of mods that your trying to squeze power out of you don't need it at all.
Haltech is sick. It's a brand new ecu. You start by tuning it on the dyno, then you move to the street and tune it via a laptop in real time. But they have no base program. So on top of the 1145 base price you alos need another 200 bucks of parts and at least 8 hours of tuning. And real if you don't have a good bit of mods that your trying to squeze power out of you don't need it at all.
That means NOT plug-n-play, so you must completely disable the stock ECU. This elminates ANY systems controlled and monitored. Then you must splice/connect all the sensors, injectors, etc. . Also, a long and tedious process.
Tuning the ECU is the EASY part.
#52
Re: Re: Re: Re: Re: Does the Apexi rEmove the rev lim?...
Originally posted by IceY2K1
It's also a Stand alone Engine Controler.
That means NOT plug-n-play, so you must completely disable the stock ECU. This elminates ANY systems controlled and monitored. Then you must splice/connect all the sensors, injectors, etc. . Also, a long and tedious process.
Tuning the ECU is the EASY part.
It's also a Stand alone Engine Controler.
That means NOT plug-n-play, so you must completely disable the stock ECU. This elminates ANY systems controlled and monitored. Then you must splice/connect all the sensors, injectors, etc. . Also, a long and tedious process.
Tuning the ECU is the EASY part.
![Big Grin](https://maxima.org/forums/images/smilies/biggrin.gif)
![Wink](https://maxima.org/forums/images/smilies/wink.gif)
![Big Grin](https://maxima.org/forums/images/smilies/biggrin.gif)
#53
Re: Re: Re: Re: Re: Re: Does the Apexi rEmove the rev lim?...
Originally posted by max'n out
Thats why I said it's a brand new ecu.
You don't keep the factory ecu at all.
Thats why I said it's a brand new ecu.
![Big Grin](https://maxima.org/forums/images/smilies/biggrin.gif)
![Wink](https://maxima.org/forums/images/smilies/wink.gif)
![Big Grin](https://maxima.org/forums/images/smilies/biggrin.gif)
I thought the Haltech had been out for long enough not to be called "new".
AEM is the new kid on the block.
#54
Re: Re: Re: Re: Re: Re: Re: Does the Apexi rEmove the rev lim?...
Originally posted by IceY2K1
Dooh!
I thought the Haltech had been out for long enough not to be called "new".
AEM is the new kid on the block.
Dooh!
I thought the Haltech had been out for long enough not to be called "new".
AEM is the new kid on the block.
Aem's new piece don't have anything for nissan at all either. To bad too cuz there much cheaper.
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