shawnk

Physical install on the 3bar looks like a snap but I am going to be starting over on my tuning knowledge.

I have a datalogit, techedge wideband, and have always done my own tuning. What I am worried about is where to start ignition wise. Anyone have any advice on 3 bar ignition maps?

Is there a way to convert my current maps to partial 3 bar maps?

Anyone have a conservative 3bar igniton map to share?

My mods can be seen at www.3rdgenrx7.com.

Thanks!

iceman4357

iTrader: (2)

Call or PM jason at the rx7 store. He told me how to do it once, but i cant remember what menu its under.

Power_Put

got any feedback shawnk on the 3 bar issue cos i have same issues here......

shawnk

3 bar install took about 45 min total including maps. I put the 3 bar in and the modified my ignition maps with a combination of several different but similar maps and it started right up and runs great. I havent been able to fully tune because of a fuel pressure problem but knock is lower than ever with this new ignition map and the car feels great. The sensor is about -55mmHg off with the ignition on but the engine not running. I tried guessing at several different ways to change the scale and the offset but I could never figure out a way to get it to 0 and it would idle/run ok. So I left it - I think it was -38mmHg off with the stock sensor so I'm not worried.

cewrx7r1

iTrader: (2)

If the only thing that is being changed is the map sensor and or PIM ABS values for Settings Three in the DATALOGIT, it is easy.

First you need to calibrate the stock sensor to obtain real boost pressure vs the ABS values for the sensor. Install the new one with the new setup values and calibrate it. Then where the ABS values match, use the same P row from the old map for the new map. That is your starting point. Only for higher ABS values with the new sensor do you require new timing .

Power_Put

i have just tested the apexi sensor to see if it trully reads 2 bar press, and i used the coming tools and experimented:

1.press sorce from a compressor set at 2 bar(regulated).

2.fc datalogit linked with pc or laptop. (you can use fc commander too sensor check window)

3.then attached the Apexi map sensor little nipple to the compressor pipe (press sorce).

4. turn on the ignition (Dont start the engine) so ecu Power FC is on.

5. open and start FC Edit on laptop and open Monitor window, press start(start logging) once you start logging when logging i go to the injector map for reference use i used the ghost and map tracer option to see where i used the load sites(cells) when i boosted.

6.then i used the compressor to add pressure at the same time take care to monitor of your monitor window and i took it to 1. bar on the compressor guage and gradually increasing. if you have a stock map sensor you might realise that over 15psi (not exact) on the monitor window the PIM V will show 4.8-5.0volts and it will aluminate RED. so thats the max the standard map sensor can read.

with a apexi sensor i realised that i could increase my pressure from my compressor to 2.0 bar= 4.8+ - 5.0volts which will equal to 1.76mmkpsomething!!!! 1.75 is what what you would see on the fc commander under monitor-boost.


7.and at the same time i was able to adjust my injector, ign L, ign T, Maps to my target max boost i will be running. To accomplish that this what i then did. i went on settings 3 page on FC Edit there are two rows one load row, and other RPM row keep that in mind, normally on a standard map the sites on max load will only read out 1. bar ish, so if you would need to boost higher you would need to 1. replace stock map sensor eheheh everyone should know that by know, and 2. you would need to modify the maps i was saying above on settings 3, to do that this is one way to test your setup(Maps) without blowing your new engine.

like i said before

A. go to the injector map for reference turn on the logging start logging and maptracer and ghost too, while you increase boost with a pressure sorce (i used a compressor), check your inj map for reference and see where the tracer is at on the load sites, always keep in mind what max boost you will be running and tuning,

B. so if you would like to have a max boost of lets say 1.5 bar and the map tracer stoped at the bottom load site at lets say 1.1bar. Then you will then need to go Setting 3 and modify the load row,

C. I starting from the bottom and increase the number from 22000 to 24000 or even a larger number and one by one change the load cells so that the cells start the same from top of the row and finish up with what you wonted at the bottom row.

then its a time to test again go to (A). ( if you hit your target boost in your maps well know you can tune your maps to your disired boost yahhhhooooo.)

If not go to (C.) again and do the load cell change again.

follow these steps till you have the maps read the disired boost you requested,

before you go tuning you will need to input and change the ignition L and T maps
so that the map cells reads out the corresponding timing for the corresponding load sites(boost), dont forget you changed all the load sites (BandC)

INPORTANT: the above is my experiment and not a actual fact i experimented and from my experince i learned the above, im not responsible for anyone who mixed up everthing or blows somthing up use the above info at your own risk,

and if someone can add to this or think i have a mistake please dont hesitate post your idea,