PDA

View Full Version : RPM limiter problem on Fiat Punto Gt 1.4 Turbo



spd_tolis
20th July, 2010, 05:38 PM
Hi,

I have increased the RPM limiter(WITH ECM2001 6.3)on that Punto GT to 7800 but the RPM gauge stops to 7400rpm.

Original limiter is 6500.
Can anyone help me with RPM limiter?

dimitar
20th July, 2010, 10:35 PM
Hi,

I have increased the RPM limiter(WITH ECM2001 6.3)on that Punto GT to 7800 but the RPM gauge stops to 7400rpm.

Original limiter is 6500.
Can anyone help me with RPM limiter?

7400 RPM is the maximum that MCU allows no matter the eprom , you cant go any higher than that

rsibiza
21st July, 2010, 09:14 AM
Hi,

I have increased the RPM limiter(WITH ECM2001 6.3)on that Punto GT to 7800 but the RPM gauge stops to 7400rpm.

Original limiter is 6500.
Can anyone help me with RPM limiter?


If you know a real technician in ecu,he is able to change you the size of the limiter,to be able raising more rpm.

But there is not much poeple knowing how to do.

You may ask oldford here on DK,but no guarantee

spd_tolis
21st July, 2010, 03:10 PM
If you know a real technician in ecu,he is able to change you the size of the limiter,to be able raising more rpm.

But there is not much poeple knowing how to do.

You may ask oldford here on DK,but no guarantee
rev limits on the HEX is 00631a?..change this but rev limit no changes.........:banghead: stays 7400rpm....

rsibiza
21st July, 2010, 03:20 PM
rev limits on the HEX is 00631a?..change this but rev limit no changes.........:banghead: stays 7400rpm....



I didnt speak about raise value,i speak about raise size of map.

Whitout raising size of map is also possible,raise limiter,but as the map size is too small yoi will loose control of all needet data i low rpm,thats why you need get raised the SIZE OF MAP before raising rpm limiter.

But as i said,you need some magic guy,who can do this.
Good luck

eprommazza
21st July, 2010, 10:41 PM
Hi,

I have increased the RPM limiter(WITH ECM2001 6.3)on that Punto GT to 7800 but the RPM gauge stops to 7400rpm.

Original limiter is 6500.
Can anyone help me with RPM limiter?

try to slow down the speed 'of micro transmit data ....:smokin:

spd_tolis
22nd July, 2010, 03:45 PM
try to slow down the speed 'of micro transmit data ....:smokin:
explain please......

nicamarcos
22nd July, 2010, 03:50 PM
try to slow down the speed 'of micro transmit data ....:smokin:
:D below_clocking on mcu?, forget it...

spd_tolis
22nd July, 2010, 06:55 PM
:D below_clocking on mcu?, forget it...
thanks..............!!!!!!!!!!!!!:banghead:

nicamarcos
22nd July, 2010, 09:41 PM
thanks..............!!!!!!!!!!!!!:banghead:
If you down value at 0x631A (0x72->0x71) you will increase 50RPM without problems, take your own calculation for 7800 rpm :).
I did many motronics raising limiter until 9000 rpm without problems, this ecu not have another map/table/single value that limit this value in 0x631A.
Also i did to cut injector pulses (REV_LIMITER=0) :).
I think that your problem is at other place.

spd_tolis
23rd July, 2010, 10:26 AM
nicamarcos please see my files attached...THANKS!!!!!!!

nicamarcos
23rd July, 2010, 08:32 PM
I see only one when begin this topic. Post ori and moded for you files.

spd_tolis
24th July, 2010, 01:01 PM
I see only one when begin this topic. Post ori and moded for you files.
OK...POST IT....

scs-mem
24th July, 2010, 04:06 PM
try to slow down the speed 'of micro transmit data ....:smokin:
do not touch the resonator

eprommazza
24th July, 2010, 05:07 PM
do not touch the resonator

with a good real-time emulator can easily compensate for speed 'lost in time and starting of the injection, I sometimes I did and I had no problems ....
:thrasher:

scs-mem
24th July, 2010, 05:18 PM
with a good real-time emulator can easily compensate for speed 'lost in time and starting of the injection, I sometimes I did and I had no problems ....
:thrasher:
With real time emulator is more easy go on rpm address(he know address)and change it.

scs-mem
24th July, 2010, 05:26 PM
If you down value at 0x631A (0x72->0x71) you will increase 50RPM without problems, take your own calculation for 7800 rpm :).
I did many motronics raising limiter until 9000 rpm without problems, this ecu not have another map/table/single value that limit this value in 0x631A.
Also i did to cut injector pulses (REV_LIMITER=0) :).
I think that your problem is at other place.

Nicamarcos is right.
Try to down value of H631A manually of 30 or 40 point,
and look whats happened.
If u have always the same problem,
then try to accelerate slow up to rpm limiter and see if this is correct.
If so u sure have problem with rpm sensor
b r

eprommazza
24th July, 2010, 06:09 PM
With real time emulator is more easy go on rpm address(he know address)and change it.


00631A do not need to go to emulator .. and still can not 'go beyond that limit ... in real time can' put in a good map
greetings;)

dimitar
24th July, 2010, 06:42 PM
with a good real-time emulator can easily compensate for speed 'lost in time and starting of the injection, I sometimes I did and I had no problems ....
:thrasher:
Did the same thing several times without problems without emulator. Simple math. Overclocking plus maps correction to compensate works like charm, however the diagnostics doesnt work due to changed timing of communication protocol .

eprommazza
24th July, 2010, 07:14 PM
Did the same thing several times without problems without emulator. Simple math. Overclocking plus maps correction to compensate works like charm, however the diagnostics doesnt work due to changed timing of communication protocol .


when I do it in real time (bit power) roll and I see HP and I have everything under control,
stachiometric and lambda ratio and more ...
the end is a good job.

nicamarcos
24th July, 2010, 10:49 PM
with a good real-time emulator can easily compensate for speed 'lost in time and starting of the injection, I sometimes I did and I had no problems ....
:thrasher:
Never more diagnostic session in this ecu, also many parameters deviated by this monster mode :D

eprommazza
24th July, 2010, 11:11 PM
Never more diagnostic session in this ecu, also many parameters deviated by this monster mode

and this one way only and it is only in some cases and in some ECU
:D