Steve, Do you have the full part number and version number or any pics?

I wonder if an email to Datalogit may be worth a shot as trhere are possible compatibility issues they may be able to advise on what they found.

_________________
JP
GT4DC Treasurer

Grey St185 RC
Silver BMW E46 M3
Multicolour yawn Honda VFR400
Silver Honda Civic Type-R

Just had a look at mine and it is ST205 9906-0003

_________________
[color=#000080]ST205 WRC 1994
Hybrid turbo
Apexi AVC-R
Apexi Power FC (Not being used ATM)
Apexi Power commander (Not being used ATM)

JP,
Worth a shot but I'm not a registered user, hint hint
If the yahoo group is still running it might be worth a post there too

hmmm,

quote from internet...
"There are two distinct serial number schemes used in the PowerFC model #'s.

First generation is


YYMM-XXXX

Where;
YY is the build year
MM is the month
XXXX is the unique item #

Second Generation is

###-XXXX
Where ### is the batch build number, so 000 or 010 or 020 (ie batch build 010)
XXXX is the unique item #

AP Engineering units are;

YY# XXXX
YY is the build year
# is the batch build number
XXXX is the unique item #

or
A XXXX
XXXX is the unique item # "

Are we sure it is an early unit?

Second quote from internet
"'The trouble with quotes on the internet is that you never know if they are genuine' - Abraham Lincoln"

_________________
JP
GT4DC Treasurer

Grey St185 RC
Silver BMW E46 M3
Multicolour yawn Honda VFR400
Silver Honda Civic Type-R

so looks like 11th one in '98 for Don and 3rd one in 99 for Phil.

_________________
If at first you don't suck seed, try drier grain.

11th one in June 98 for DOn and 3rd one in June 99 for Phil.

That's what I thought anyway and as such I am wondering if Steves steer that "it is an early unit" may not be correct?

_________________
JP
GT4DC Treasurer

Grey St185 RC
Silver BMW E46 M3
Multicolour yawn Honda VFR400
Silver Honda Civic Type-R

I guess the question is, can the firmware be upgraded, and if so, how?.

I noticed that on Dan's .dat file the version number is 1.61 as read from the MR2 Apexi ECU, but my .dat file from the ST205 ECU is version 2.12.

I am assuming that is the ECU version number?

The FC-Edit software was 2.130 (Latest?)

I think Steve's was V2.20 ECU version

_________________
[color=#000080]ST205 WRC 1994
Hybrid turbo
Apexi AVC-R
Apexi Power FC (Not being used ATM)
Apexi Power commander (Not being used ATM)

Need to get Dons plugged in for a firmware check

My AP Engineering is

PFC ST205 A0 151
So unknown vintage

Dans is a different ECu so version number I don't think can be compared between MR2 & ST205.

Some extra notes following discussion with steve and he indicated some of the limitation of operation......

Quote from Datalogit regarding early skyline/RB26 power FCs and datalogit.

_________________
JP
GT4DC Treasurer

Grey St185 RC
Silver BMW E46 M3
Multicolour yawn Honda VFR400
Silver Honda Civic Type-R

Knowing the vintage of chip used, I think the firmware is in mask programmed or more likely one time programmable ROM inside the processor chip.
A firmware upgrade would require a new chip with the new firmware burnt in.

_________________
If at first you don't suck seed, try drier grain.

Phil, did you get a feel for economy with the PFC once I'd re-mapped the cruising area fueling ?

_________________
If at first you don't suck seed, try drier grain.

Yes, it seemed a lot better at cruising speeds, but on boost I was not happy with it at all, and seemed to cut just for a 1/2 1/4 of a second just when you wanted the boost, and then it picks up again.

Next step is to try Ryan's/my map in Dan's ECU with the charge cooler control bypassed.

As Steve's Apexi ECU seemed to run fine in my car , I am at a bit of a loss as to what I need to do next?

I have tried resetting the ECU via the FC Commander, and then re-loading the map, but it still it is the same.

Thanks must go to Diceman for the loan of the Datalogit box, I have learnt so much with the kit, and Nibbles and Steve's help, thanks goes out to you guys.


But on a happier note, the horrible growling noise I had when at speed or when on track was the exhaust banging on the sub frame, which became worse after fitting the (STAINLESS) AFR bung, and me being sloppy at re-fitting.

_________________
[color=#000080]ST205 WRC 1994
Hybrid turbo
Apexi AVC-R
Apexi Power FC (Not being used ATM)
Apexi Power commander (Not being used ATM)

I suppose if you wanted to confirm its related to the earlier firmware on your PFC compared to Steves later AP Engineering version you could try the same map on my PFC which appears to be even older than yours! Happy to lend it out.

_________________
Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp

One thing we should have tried is your ecu and map in my 205 with standard Turbo. I can't help feeling your hybrid is making things worse.

_________________
If at first you don't suck seed, try drier grain.