Power Fc D-jetro Owners (32/33 Gtr)

[Tomei_33]

Hey guys my D-jetro arrived today, but i only have one map sensor.. i thought gtr's are meant to have two? heres a pic of what im talking about

[Swiper the Fox]

Hey guys my D-jetro arrived today, but i only have one map sensor.. i thought gtr's are meant to have two? heres a pic of what im talking about

yes...two are required...ones ive seen anyway

[Tomei_33]

gay. im short one

edit* forgot to say thanks.. thanks paul

Edited May 5, 2008 by Tomei_32

[Beer Baron]

yes, you need 2. some people do the dodge and just bridge two vac lines and then also split the signal from one map sensor to fee the twin inputs but it's not the way to go. just order another apexi map sensor and you'll be sweet.

[ahh 33 s2]

what if running single turbo set up?? just one or still two

[GeeTR]

^^ the MAP senders on the collection tube, so single vs twin is irreverent.

Still though, I wonder if two are needed. Most Autronic / Motec / Haltech setups i see, use only one MAP sender (none, have the difficulty of multi throttles though admittedly)

Seeing as some people don't get good results with the sender tap'd and bolted to the Apexi recommended collection tube, but need to make an aftermarket zone (that reflects the average vac/boost of each inlet runner)... surely one sender, bridged at the ECU (like ppl do with AFM's) could work just as well...

Meh, just thinking aloud.

Edited June 8, 2008 by GeeTR

[Tomei_33]

^^ the MAP senders on the collection tube, so single vs twin is irreverent.

Still though, I wonder if two are needed. Most Autronic / Motec / Haltech setups i see, use only one MAP sender (none, have the difficulty of multi throttles though admittedly)

Seeing as some people don't get good results with the sender tap'd and bolted to the Apexi recommended collection tube, but need to make an aftermarket zone (that reflects the average vac/boost of each inlet runner)... surely one sender, bridged at the ECU (like ppl do with AFM's) could work just as well...

Meh, just thinking aloud.

I really dont get what u said, too technical for me lol, i dont understand what beer_baron said either, although i understand the "just order another one" bit, and so thats what i did thanks for the help

[skylinekid]

my pfc d-jetro came with 2 sensors so yes u need 2.... or u could upgrade sensors if u want to run big boost but the standard sensors go to 2 bar neways so yeh

[paulr33]

not related

....but the std map sensors are 3 bar absolute pressure

what most peoeple miss is the "absolute pressure" bit which means 1 bar vacuum and 2 bar positive

most people assume that because its a 3 bar map sensor, it can read upto 3 bar pressure

so if you want to run more than 2 bar boost then youll need to upgrade the map sensors

with datalogit you can plug in the GM 5 bar map sensor off the bat and it works fine (the rx7/evo guys do this)

[Gav]

what if running single turbo set up?? just one or still two

The number of turbos is irrelevant as the MAP sensors are mounted between the inlet manifold (plenum) and the head.

It is also important to fit both as the PFC D-Jetro internal programming appears to be quite complex and expects 2 outputs. I suspect that there is allowance for reverberation through the manifold. As an example, if you reverse the connections between the #3 and #4 map sensor the idle is crap (didn't want to risk putting it under load).

[GeeTR]

...if you reverse the connections between the #3 and #4 map sensor the idle is crap

Gav, sorry whats #3 and #4 referring to? The positioning of the senders between cyl 3 & 4?

Thats pretty interesting, swapping them around, messes up the idle.

[Gav]

Gav, sorry whats #3 and #4 referring to? The positioning of the senders between cyl 3 & 4?

Thats pretty interesting, swapping them around, messes up the idle.

Yep - it's the position of the map sensors. One is adjacent to #3 cylinder and the other to #4.

See:

http://paulr33.skylinesaustralia.com/docs/...6%20djetro).pdf

[skylinekid]

not related

....but the std map sensors are 3 bar absolute pressure

what most peoeple miss is the "absolute pressure" bit which means 1 bar vacuum and 2 bar positive

most people assume that because its a 3 bar map sensor, it can read upto 3 bar pressure

so if you want to run more than 2 bar boost then youll need to upgrade the map sensors

with datalogit you can plug in the GM 5 bar map sensor off the bat and it works fine (the rx7/evo guys do this)

well yeh ok i was only refering to the positive pressure........ sorry

[9krpm]

I bridged my vacuum hoses from the map sensors but still use both map sensors

[Tomei_33]

i got another question guys... how much does it cost to install a power fc d jetro into an r32 gtr? my mechanic said he cant find something on the intake plenum and has to take the plenum out.. will take about 6-7 hours labour... this definitely does not seem right to me... anyone else know?i think he is looking for drill points or something?

[Adriano]

IMHO its the only way i would do it on a customers car, its the only way to guarantee no metal goes into the motor.

[STATUS]

i got another question guys... how much does it cost to install a power fc d jetro into an r32 gtr? my mechanic said he cant find something on the intake plenum and has to take the plenum out.. will take about 6-7 hours labour... this definitely does not seem right to me... anyone else know?i think he is looking for drill points or something?

to do it properly requires throttle bodys to be removed, DONT SKIMP and do it any other way the tuning results are very AVERAGE.... if your lazy get AFM PFC as it will tune up better than a incorrectley setup d-jetro... i learnt this years ago when i offered to fit one up for free..... 50 or so djetro (all models) tunes and installs later ive learnt what works and what doesnt... lol

[32GTRB]

Bumping an old thread but just got a djetro. Where is the best place to tap the feed for the map senders? Install instructions say #3 and #4 but does anyone have any pictures of where specifically to drill?

Also looking at paulr33's faq it say to splice the map sensors into the afm wiring, but then it says to splice into the boost control kit wiring. Which one is it? I also have the boost control kit which i'll be using.

[Piggaz]

[32GTRB]

Thanks Piggaz!

Anyone know about the map sensor wiring? Is it splice into the afm harness, or run it to the boost control port on the pfc?