Bravo 1.4 Tjet gpl

[Riccardo#28]

Hi guys,
a dear friend has a fiat bravo 1.4 tjet 150hp with the lpg-system; the machine in question ? been mapped and, with the removal of the catalyst, download 198cv to the tree, calculated on a roller braked.
With the map as soon as you load the machine, and it's pretty clean, but problems arise after several miles of use on lpg where I think the autoadattivit? turns the tables and the machine, turning on the gas, starts to limp and power ? certainly much reduced.
Have you encountered similar problems on other tjet? do you know how to fix it?
thanks

[alfajtd]

surely there will be errors in the map loaded...
read it and put it...

[Riccardo#28]

I can't read it because I have not the instrumentation, the point of it ? that the car is fine when the map ? was uploaded by a short time, while if you turn a little to the lpg delivery is dirty, the cv's go down and even bringing back the petrol supply solves the problem; it solves reloading the same map

[sergiot]

if the lpg system ? of origin, should not happen what you described.
if the plant ? was applied after, then ? 's quite normal for that to happen in these problems, if the system does not include a lambda emulator.
who cause the problem are the autoadattamenti of the fuel mixture resulting from the fact that the stoichiometric ratio of gasoline ? 14,6 what the gpl is about 16.
there are 2 remedies, one of mappaatura with the block of the adaptations
another costs you nothing: you have to switch from lpg mode to petrol.
in practice 2000-3000 km on lpg ( or 2-3 months) to do a full tank of gas and consume it all before going back to the gpl.
this alternation is also good for you to injectors engine oil, valves, and ensures the long life of the engine

I can't read it because I have not the instrumentation, the point of it ? that the car is fine when the map ? was uploaded by a short time, while if you turn a little to the lpg delivery is dirty, the cv's go down and even bringing back the petrol supply solves the problem; it solves reloading the same map

I apologize but I have written my speech before I read your last one.
with this situation I think that there was written something incorrect in the mapping that "helps" some adaptation.
you have errors in diagnosis?

[Riccardo#28]

the system does not ? source ? a Tartarini.
disable the adaptation would imply disable the lambda?
the owner of the car says that even turning a long time to gas the situation does not change (although it seems to me strange)

(I apologize to my mod for the double post but I had not read the last of sergiot)
absolutely can not appear any error in diagnosis

[sergiot]

how has the problem?
I do have a hypothesis
pu? be in the guide with a little throttle, the car remains unchanged and, instead, with a lot of throttle the car is with low power?

c'? also wonder if, given the performance increase consistent, the lpg system ? able to provide enough fuel.
this question I am also in regard to the petrol from my information the injectors of the 150 hp are capable of delivering up to 175-185 hp then become insufficient.
changed the injectors to get to almost 200 hp?

[Riccardo#28]

the performance problem to lpg ? very important: if lpg the car is not download the horses rolled to the dealer ? a problem.
the injectors are the only of the series, the machine is equipped with just a panel filter bmc, the downpipe without catalyst, and the mapping in question.

in the guide with a little throttle, the machine "seghetta" and, at full throttle, it should not be for what should go. the jerking you feel even passing gas all open gas zoned.

[sergiot]

it's ok that we do not by importance, but if the lpg system ? regulated well the performance must be the same as that of petrol.
if it is an act of faith that the components is adequate for the desired result,
for components, we mean both the injectors that the turbine.
then we must see what ? been changed in the map. perhaps you can ask whoever has made it.

I'm afraid that you both went to break the soul of the knock control

[Riccardo#28]

lpg does not go that badly, but it's getting worse gasoline: revised calibration.
for you as you can? you have "broken the soul" of the knock control?

[sergiot]

with the mappings of ignition advance