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Apexi Djetro
Posted: Wed Mar 14, 2007 11:16 pm
by slaphead
Probably a no brainer for someone in the know - I tried looking this up and couldn't find the info anywhere.
Is it possible to use a djetro ecu with standard afms on a gtr i.e. just plug it in, as it were, or are you forced down the map sensor route?
Thanks in advance
~Mark
Posted: Thu Mar 15, 2007 7:40 am
by gary@apt
if you buy a djetro ecu it will only work with map sensor,it wont read from afms
Posted: Thu Mar 15, 2007 8:00 pm
by 323ian
This is the route i will be going on my Skyline Mark.
No more huge clouds of black smoke from dodgy AFM's!!
Posted: Thu Mar 15, 2007 11:14 pm
by slaphead
Thanks Gary/Ian
I did suspect this might be the case - just a forlorn hope :oops:
Totally agree with the AFMs and clouds of black smoke angle - its the haunting thought of a small rain forest dying somewhere every time I floor it :lol:
~Mark
Posted: Fri Mar 16, 2007 7:18 am
by Ben
The D-Jetro Power FC units carry the same functions as the regular Power FC units but do not require the use of the factory standard air flow meter and use a mass air pressure sensor. Apart from the unit itself, use of the D-Jetro units requires additional parts that vary depending on the model." -
http://www.greenline.jp The airflow meter (at least in the skyline range) does not pose a big restriction in terms of horsepower and one would doubt the use of the D-Jetro. If you really need massive airflow you can always change to 2 x Q45 Airflow meters and use those with the PowerFC. The skyline series are optimized for closed loop operation with an airflow meter.
The Djetro version has a few caveats you should know about before you consider using it
Careful placement of the map sensors in multiple throttle body systems With multiple throttle bodies, such as the Skyline GTR RB26 or the Pulsar's GTI-R SR20 multiple throttle bodies can have bad side affects when using a map sensor system. Consideration needs to be taken into account when placing the map sensor (or map sensors) for the Djetro system to avoid idle problems on multiple throttle bodied engines.
Tuning will take considerably longer It will take considerably longer to tune a Djetro PFC over a normal LJetro PFC. This is because all of the work has to be done from scratch instead of just doing the main bits in the AFM/LJetro version. You should discuss this with your tuner and find out the total cost for a Djetro tune.
There is an Apexi FAQ under general tehnical

Posted: Fri Mar 16, 2007 8:26 pm
by 323ian
After having a breif chat to Gary he has reccomended the D jetro to me.
Once you add up the cost of getting two new AFMs plus a Ljetro it comes to roughly the same as the D jetro for price.
Posted: Fri Mar 16, 2007 9:02 pm
by madenglishman
I have the djetro on mine because I was hacked off with afm issues
So far so good with it

Posted: Fri Mar 16, 2007 10:13 pm
by slaphead
Thanks Guys
Obviously there's pro's and cons with either installation - I must admit I am leaning toward the AFM less side - especially given the number of issues I've had with them - It just depends on whether - my existing old dog of an Aussie Power fc is actually functional after a reset.
~Mark