tumbledown
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- Jul 8, 2009
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hi all am awaiting new 1.4 lounge and wondered if anyone has tried any of the aftermarket ECU upgrades, and if they had any positive results? many thanks steve....
Wont see massive gains on paper but i would imagine it will greatly improve the power delivery and the way the car drives
Whats that Matt? Chipping or remap
A remap is so much better than a chip:-
-remap the ecu isn't physically opened i.e. warranty issue
Minor correction on that point for the 1.4. You have to take the ECU out of the car and solder on some resistors to allow it to be written over. It's not a dramatic procedure and Fiat wouldn't be able to tell you've done it because the resistor is only across two pins for the length of time the remap is done.
I would also be really interested to learn more on costs here, especially a remap on a 1.2, plus induction kit...
What are the results (ie BHP)? Even thought I know real world driving is not necessarily all about BHP, the torque curve is the good bit.
maybe with the remapper u used but other places do not need to do that just an OBD2 port connection
maybe with the remapper u used but other places do not need to do that just an OBD2 port connection
Interesting. Was yours mapped without removal? I've seen two different people at different places map a 1.4 and they both had to pull the ECU and do the solder. They tried mine with an OBD2 and and it could read out but not write.
I wonder if there is variation in the ECU's and versions of the same engine that allow or deny this? Your's is Euro spec isn't it? Be interesting to compare ECU's, see if there is a difference.
On a N/A car remapping will give a very limited increase. Do you really think playing with spark and fuel can yield a big advantage over a manufactures map which has taken hundreds of hours to perfect in a totally controlled dyno cell environment where any climate can be replicated in a hour or two on a r/r using a PC or lap-top, no.
And please don't spout rubbish about poor fuels in other countries, anywhere in Europe fuel of a very high standard is available, in fact most have higher octanes available than what we do.
Yes maybe some minor increases can be had, and an improvement on driveability can be had. And maybe if the mappers know what they are doing they can adjust throttle response on the fly-by-wire cars to further enhance the driveability of the car.
Remapping has more benefit when the car has had other work done to it, though even then modern ECU's with knock & lambda sensors and ignition advance etc have more than the ability to take into account induction and exhaust systems.
This is why in general re-mapping companies will not list a bhp/lb ft increase on N/A cars as its not like turbo cars where increases by remapping are much more defined, and by listing a figure and your car doesn't get it you could then say under trades description act that the service they provided didn't meet the amount that was advertised and get your money back, so by saying you will get approx 3-5% they cover themselves. Because lets face it a 5% increase on a 100bhp is not going to be felt by anyone.
I am sure in many cases its a placebo effect more a wanting to feel an increase after shelling out cash on a remap, then truly feeling it.