Pfc D Jetro Opinions

[icydude]

I would like to have some feedback on the d jetro version of the pfc.

I am going to be building a very high hp r32 gtr over the next year and I have no intention of using maf sensors.

I recently came across a 1034 rwhp r33 gtr that used a d jetro ecu.

I liked my previous l jetro pfc so i thought i would like to use a pfc again but this time with d jetro and datalogit

Would i be better of with a ecu such as microtech, tec 3 or anything else?

Edited November 14, 2006 by icydude

[2443]

If you have proper size AFM for your terget power. L-jetro is nothing to lose I beleive. If you do not have it, you have to use D-jetro is much better. Max power is almost same both of them if suction of a air is same condition. Any ECU are same. But the measurement of the air suction is most important thing for the power and response of the engine. AFM is on time measure but D is after suction a air.

[paulr33]

head a read of the PFC FAQ in my signature, it covers the djetro vs ljetro pfc's. worth a read

[icydude]

head a read of the PFC FAQ in my signature, it covers the djetro vs ljetro pfc's. worth a read

Sure have

I am a frequent visitor to your site for the last year i would have to say.

I was really hoping for opinions from those who have tuned them or drive with them.

I wont have space for any mafs.

[rev210]

http://www.xspeed.com.au/secret.php?area=nissan

Have a look at some of these cars, D-jetro equiped and high horsepower.

[700HP-GTR33]

The turbo's life is shorter on a D Jetro ...this is why I did not take this path.

For the figures you are looking at though it is the best option...for value for money that is.

But if you are well cashed up, thats another thing

What are you planning to use it for?Track or Drag

[Roy]

The turbo's life is shorter on a D Jetro ...this is why I did not take this path.

How is that?

[700HP-GTR33]

To my readings the turbos are not limited by the air flow meters and are spinning at higher revs

to begin with...this is why responce is quicker.thus turbo life is shorter.

Most of the WA guys swear by the better set up using the D Getro vertion of the power-fc.

Correct me if any one actually has heard different.

[West]

To my readings the turbos are not limited by the air flow meters and are spinning at higher revs

to begin with...this is why responce is quicker.thus turbo life is shorter.

Most of the WA guys swear by the better set up using the D Getro vertion of the power-fc.

Correct me if any one actually has heard different.

AFM dont' control turbo i believe.

Maybe turbo life shorter because you don't use the AFM anymore, don't use air filter either (like the crazy jap) so sometime flies got suck through! .

[R31Nismoid]

To my readings the turbos are not limited by the air flow meters and are spinning at higher revs

to begin with...this is why responce is quicker.thus turbo life is shorter.

Most of the WA guys swear by the better set up using the D Getro vertion of the power-fc.

Correct me if any one actually has heard different.

wrong.

AFMs dont limit turbos at all.

Its jsut the WA tuner in question gets better results.

Same as a Vic tuner gets excellent results here using AFM's

Its just the ECU that the tuner is comfy using.

AFM's are not a limitation

[icydude]

What are you planning to use it for?Track or Drag

The car will be used for Drag 3/4 of the time and maybe a few weekend cruises with my mates.

[SKY 34]

I've heard that D-jetro pfc is a very crude ECU. lumopy idle, bad fuel consumption. It is used only in high hp applications as afm cannot read tha high air flow even the Q45 ones....It is not recomended for hp which is manageable bt afm.. anywas out of curiosity does D-jetro veersion comes in witht he MAP sensor or have to buy seperately.

I think D-jetro is the cheapest out of all the pfcs

[icydude]

I've heard that D-jetro pfc is a very crude ECU. lumopy idle, bad fuel consumption. It is used only in high hp applications as afm cannot read tha high air flow even the Q45 ones....It is not recomended for hp which is manageable bt afm.. anywas out of curiosity does D-jetro veersion comes in witht he MAP sensor or have to buy seperately.

I think D-jetro is the cheapest out of all the pfcs

you buy the djetro pfc and commander for 71000 yen. Then you need to buy the djetro sensor kit and harness which is another 33000 yen.

[Gav]

I've heard that D-jetro pfc is a very crude ECU. lumopy idle, bad fuel consumption. It is used only in high hp applications as afm cannot read tha high air flow even the Q45 ones....It is not recomended for hp which is manageable bt afm.. anywas out of curiosity does D-jetro veersion comes in witht he MAP sensor or have to buy seperately.

You've "heard" a lot of bunkas

[SKY 34]

You've "heard" a lot of bunkas

ahh you are basing this comment on? which part of my response is bull ~~

this is my sourse:

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." - 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 and oxygen sensor for feedback and measuring. Cars the run on a MAP sensor system can suffer drawbacks such as bad idling, poor fuel economy, problems with cold starts etc

from Paul's manual

the costing come from:

http://www.nengun.com/catalogue/brand/1

remeber that you have to add MAP sensor cost to D-jetro

and the "heard term" is literally from a tuner in W.A, you can pm me for his number if you are not satisfied

so...now which bit again?

[Willo]

I have a D-Jetro and my idle is fine, my economy is good (is there is good economy in a GTR) and cold start is fine. I believe the biggest limitation is the tuner.

I think there was another thread on this discussion not long ago.

[paulr33]

haha my bad, my faq is a bit outdated in the djetro area. it needs to be updated (soon)

[GTS-t VSPEC]

I've heard that D-jetro pfc is a very crude ECU. lumopy idle, bad fuel consumption. It is used only in high hp applications as afm cannot read tha high air flow even the Q45 ones....It is not recomended for hp which is manageable bt afm.. anywas out of curiosity does D-jetro veersion comes in witht he MAP sensor or have to buy seperately.

I think D-jetro is the cheapest out of all the pfcs

Sky34, I agree with Gav, what you've been told is not true. I know at least 4 De Jetro tuned GTR's in WA which have no problems with idle or fuel consumption. There is a trick to getting the idle right with multiple throttle bodies. I'm sure the tuner you spoke to just doesn't like De Jetro's which is fair enough, but they are a very good product for high hp cars.

Cheers

Paul

[paulr33]

hi guys

yeah im sorry the stuff i had in the pfc faq under the djetro area is a bit outdated and the opinion was a bit off with no real evidence. there are a few caveats you need to know about when using djetro pfc, and presumably others

- careful placement of map sensors

- tuning takes a lot more time, much more than afm

- have to buy extra djetro parts and connect it up

[Robo's]

To my readings the turbos are not limited by the air flow meters and are spinning at higher revs

to begin with...this is why responce is quicker.thus turbo life is shorter.

Most of the WA guys swear by the better set up using the D Getro vertion of the power-fc.

Correct me if any one actually has heard different.

In simple terms, they offer better performance then if they respond better!!!!