Power Fc D-Jetro Newb

[lloydxmas]

Hi guys, I am from the U.S. and am in need of some info. I have a rb26 converted to a single precision 6265 turbo, and precision 880cc low impediance injectors. I am trying to tune my power fc d-jetro with datalogit and have ran into a few issues with my tuner. He is familiar with AEM and hasnt really messed with anything quite like this. I am not running any o2 sensors simpley a AEM UEGO, and have tapped the 2 3.5bar map sensors inito the runners of number 3 and 4 after the throttle boddies. This car was a ground up build and pretty much stock motor besides cam gears, headgasket and studs. My questions are as follows.

1. How do I conver the map axis to load and rpm instead of seeing it as P and N?

2. Can anyone email me a base map for 880cc injectors?

3. I used my latency values given for stock injectors and did the conversion for the new larger ones and the msec on them and still my tuner has issues with it.

4. How does the self learning idle work? Do I need the stock o2 sensors functioning at this time? Pretty much at idle it runs 10.0's pig rich and when we try to lean it out either on the injector mapping or injector tables it starts to surge.

My tuner said if he can get a map to download straight to the car with 880cc injectors he can build off that but I am at my wits end and am about to sell it all and go Vipec or AEM haha! Thanks for any help you guys can give.

[89CAL]

I can give an answer for number 1 (assuming you are using FC Edit)

I think you either right click on the map or it's in one of the drop down menus at the top but you have to check MapRef labels

[STATUS]

email me your setup and i will email something that will get you started. The djetro is one of the best rb26 ecu's around,

I would go as far saying that if your new to PFC and VIPEC / LINK the PFC in its std layout is better than the VIPEC / LINK (unless of course your an experienced LINK VIPEC tuner)

ive found on the rb26 its best to use the 5d fuel maps to get any decent type of fuel economy with a big HP setup... all due to the single map sensor picks resolution seems to have more common areas (in cruise) than the PFC's dual map sensor. (that said i would have a Link in my own car because of the extra maps available to me).

[email protected]

[Don Dada]

^^^^

Youre a boss

[lloydxmas]

thank you Status will do!

[lloydxmas]

havent had status email me yet anyone else got any info for me? Or a map with 880cc injectors?

[Beer Baron]

don't worry he'll get to it. perhaps if you want it fast, paypall him $100 for his time! I would.

[JonnoHR31]

post a copy of your tune file up here (attach it to your post) and i'll have a look for you. also need the injector latency figures

[STATUS]

my bad will do 1st thing in the morn.... big days lately.

[lloydxmas]

stock n1 rb26

precision 6265

precision 880cc injectors

The following are the latency @ voltage values for our 880cc injectors:Open Time Latency (ms) @ Voltage --> 1.63ms @ 8.7v 1.00ms @ 10.4v .80ms @ 12.2v .70ms @ 13.9v .60ms @ 15.6v .56ms @ 17.4v .56ms @ 19.1v .53ms @ 20.9vIf you need to convert the latency values to microseconds, move the decimal 3 places to the right. For example the first value would be 1630 microseconds @ 8.7 Volts.

I would like someone to walk me through how to do the self idle also. right now my car idles good but 10.0's very rich. When we played with the injector mapping it started to lean slightly but began surging bad. Will this happen if we do not do the idle process? Also How does the power fc know how to idle with the 02 sensors no longer being installed on the car? No problems status I am actually about to chuck this damn thing and get vipec seeing power fc is not common where I am from and already have money in it and a tuner. Just trying to get some where with it or get rid of it.

Edited July 22, 2011 by lloydxmas

[paulr33]

the powerfc is able to idle with working 02 sensors or no 02 sensors, or 02 feedback turned off

depending on the powerfc version and if IDLE-IG is enabled under function select, its usually hard locked to 15deg or 20deg (depending on rb25 or rb26)

you cannot enable the self idle learn feature

it is a once only feature that is enabled automatically when you perform DATA INIT

then next time you turn the car on it runs through the 30 minute self idle procedure

if you skip this procedure, f**k around with the car, drive or it have mangled idle air control, mangled sensors, mangled intake etc then its toast and you must DATA INIT again and re-do the procedure

if you mangle it the usual outcome is instant stall when you tap the throttle or wonky idle

that is, hunting all over the place (rpm stall / rpm hunt) not AFR hunting

[lloydxmas]

My tuner is comfortable with AEM and only used power fc one time years ago. Basically my car was a ground up restoration and so only thing used still on it are iacv and a few other sensors. We want a base map that way we can eliminate the surge issue to the tune or sensor. Also the AFR does hunt when we lean the injectors out too not just the idle. When we leave it like it sits its rich (10.0's) but idles and revs smooth.

Edited July 23, 2011 by lloydxmas

[STATUS]

emailed you a few starters. First one is good for mid 400rwkw"s second was around mid 300"s

I take no responsibility for them (as they were spot on in the respective cars but on anything else they are just good bases to start from as no two setups are the same) and i have sent them on the proviso they are not to be shared with anyone but your tuner....

[lloydxmas]

ok thank you status I know this is not a fully finished tune. I was just wanting something to build off of.

[JonnoHR31]

the powerfc is able to idle with working 02 sensors or no 02 sensors, or 02 feedback turned off

depending on the powerfc version and if IDLE-IG is enabled under function select, its usually hard locked to 15deg or 20deg (depending on rb25 or rb26)

you cannot enable the self idle learn feature

it is a once only feature that is enabled automatically when you perform DATA INIT

then next time you turn the car on it runs through the 30 minute self idle procedure

if you skip this procedure, f**k around with the car, drive or it have mangled idle air control, mangled sensors, mangled intake etc then its toast and you must DATA INIT again and re-do the procedure

if you mangle it the usual outcome is instant stall when you tap the throttle or wonky idle

that is, hunting all over the place (rpm stall / rpm hunt) not AFR hunting

a little OT but do you know if the self learn data is saved and loaded with tune files or is it completely seperate and unchanged until a data init?

[paulr33]

as far as i can tell it stored on the powerfc unit and is not part of the tune

ie you cant copy the self idle learnt data - if there is data, if that makes sense

if you buy a brand new powerfc

connect it to your car

turn key to ON but dont start it and copy someone else's tune over the top or tune it accordingly

then start the car, you still have to do self idle procured

the only way to start it is to DATA INIT

and then next key on self idle learning procedure

thats the 30 minutes of normal idle, 10 minute air con, 10 minute demister etc

[JonnoHR31]

thats what i thought. thanks