20valver
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quote:
Originally posted by luke85
(1)You might as well shout at the ECU and tell it you have swapped the inlet for all the good that disconnecting the battery will do.
By all means fit the different inlet and throttle but you will need to keep the same fuel injector as you had before or as your dad says, it will be throwing too much fuel in and losing you power
(1) the ecu is set up for standard running so when you change throttle bodys ie bigger ones there is more air going into the engine but the ecu still thinks it is running the standard size throttle body so when you disconnect the battery over night this puts the ecu into default mode then the ecu learns the new set up and the same when you do induction mods ie drilling holes in the airbox/ cone filters/inlet manifolds because on a spi ecu this can not be remapped where as the mpi can be remapped, if you decat then you will need a bigger injector,
i run a modded airbox/throttle body/inlet manifold and run a 1.6 spi injector no problems does not even run rich
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bieransri
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Location: Kidsgrove, Staffordshire
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so what your saying is that leaving the battery off will erase the ROM/EPROM? Then running it will reprogram this memory with the required settings for the changes?
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20valver
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resetting the ecu, this is another forum members post
http://www.corsasport.co.uk/board/viewthread.php?tid=44965
[Edited on 04-12-2008 by 20valver]
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bieransri
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Location: Kidsgrove, Staffordshire
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but data such as airflow, load, temp etc are all stored in the RAM which is erased each time the ignition is tuned off. its LIVE data which changes depending on loads of factors like driving style, conditions etc.
ITS A MYTH! END OF!
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20valver
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Registered: 14th Sep 08
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quote:
Originally posted by bieransri
but data such as airflow, load, temp etc are all stored in the RAM which is erased each time the ignition is tuned off. its LIVE data which changes depending on loads of factors like driving style, conditions etc.
ITS A MYTH! END OF!
question before i reset my ecu the motor run shite then re set the ecu and after about 50 miles the car started to run right,
my engine does not have a airflow sensor/ the map sensor sorts out what engine load/ and temp mine only as a cts
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bieransri
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Registered: 13th Apr 06
Location: Kidsgrove, Staffordshire
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yea because the ECU read the LIVE data over these 50 miles.
There are standard settings stored in the ROM for if/when for example a sensor goes down. it will then revert to these standard setting and run,all be it not correctly.
doesnt matter if it measured via a MAP or AFM. it still uses the live data to determine fuelling etc
same wih cts, this will give the ECU a means of reading the engine temp, and wether to use cold start or not.
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20valver
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question so how come i had to reset the ecu for bigger throttle body
question so how come i had to reset the ecu for airbox mods
question so how come i had to reset the ecu for inlet manifold
question so how come i had to reset the ecu for port matching
question so how come i had to reset the ecu for cold air pressure feed
[Edited on 04-12-2008 by 20valver]
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bieransri
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Location: Kidsgrove, Staffordshire
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answer: you didnt.
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20valver
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quote:
Originally posted by bieransri
answer: you didnt.
you didn't what does this mean
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bieransri
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Location: Kidsgrove, Staffordshire
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the ECU will not respond to you putting a pipe to you filler filled airbox.
the pipe may get more air to your airbox yes but there is no need to reset the ECU as it has no relation what so ever to it. IT WILL MAKE NO DIFFERENCE TAKING THE BATERY OFF FOR A NIGHT!
your porting will help the airflow but disconnecting the battery will do nothing to aid these modifications.
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20valver
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Registered: 14th Sep 08
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quote:
Originally posted by bieransri
yea because the ECU read the LIVE data over these 50 miles.
There are standard settings stored in the ROM for if/when for example a sensor goes down. it will then revert to these standard setting and run,all be it not correctly.
doesnt matter if it measured via a MAP or AFM. it still uses the live data to determine fuelling etc
same wih cts, this will give the ECU a means of reading the engine temp, and wether to use cold start or not.
There are standard settings stored in the ROM, standard means 35 mm throttle body/ inlet manifold/ airbox/ air filter/ injector/ tps/
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20valver
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quote:
Originally posted by bieransri
the ECU will not respond to you putting a pipe to you filler filled airbox.
the pipe may get more air to your airbox yes but there is no need to reset the ECU as it has no relation what so ever to it. IT WILL MAKE NO DIFFERENCE TAKING THE BATERY OFF FOR A NIGHT!
your porting will help the airflow but disconnecting the battery will do nothing to aid these modifications.
was not on about the pipe to the airbox from behind the front grill
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20valver
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soon as you go from standard fitted parts to uprated or tuned parts then the ecu does need re setting because it is not standard any more
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Ellis
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Location: Aberdeenshire
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Rubbish, what a dribble of pish
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20valver
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quote:
Originally posted by bieransri
the ECU will not respond to you putting a pipe to you filler filled airbox.no but the engine does
the pipe may get more air to your airbox yes but there is no need to reset the ECU as it has no relation what so ever to it. IT WILL MAKE NO DIFFERENCE TAKING THE BATERY OFF FOR A NIGHT!
your porting will help the airflow but disconnecting the battery will do nothing to aid these modifications.
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20valver
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quote:
Originally posted by Ellis
Rubbish, what a dribble of pish
question how is this then
[Edited on 04-12-2008 by 20valver]
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Ellis
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Location: Aberdeenshire
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Do you have idea about fluid dynamics for a start?
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20valver
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quote:
Originally posted by Ellis
Do you have idea about fluid dynamics for a start?
yup, you need to know this when tuning in any form, fluid dynamics starts at the front of the car and finishes at the rear of the car
[Edited on 04-12-2008 by 20valver]
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bieransri
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Location: Kidsgrove, Staffordshire
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quote:
Originally posted by 20valver
soon as you go from standard fitted parts to uprated or tuned parts then the ecu does need re setting because it is not standard any more
but the ECU is standard, and has standard settings! regardless of ''resetting'' it.
the LIVE data sent to the ecu will not say 'oh look a new pipe' or 'oh 20valvers ported the head' it definetly will not say 'wow the airbox is full of filler'
the ecu will recieve signals from tps,map etc and alter the fuelling accordingly so none of the things you do are going to benefit by taking the battery off for a night.
new pipes etc will aid the flow of the air but its not gonna have a massive effect unless for example you get id of the exhaust gases quickly and efficently too.
Everything needs to be in accordance with everything else. You just appear to be doing what you think is best without knowing what is proven or even how the components acually work before you do this stuff.
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Ellis
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Location: Aberdeenshire
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quote:
Originally posted by 20valver
quote:
Originally posted by Ellis
Do you have idea about fluid dynamics for a start?
yup, you need to know this when tuning in any form, fluid dynamics starts at the front of the car and finishes at the rear of the car
No you don't...
So from your expierence what pressures are you getting inside an airbox on your fuckin mad spi badboy?
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20valver
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Registered: 14th Sep 08
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quote:
Originally posted by bieransri
quote:
Originally posted by 20valver
soon as you go from standard fitted parts to uprated or tuned parts then the ecu does need re setting because it is not standard any more
but the ECU is standard, and has standard settings! regardless of ''resetting'' it.
the LIVE data sent to the ecu will not say 'oh look a new pipe' or 'oh 20valvers ported the head' it definetly will not say 'wow the airbox is full of filler'
the ecu will recieve signals from tps,map etc and alter the fuelling accordingly so none of the things you do are going to benefit by taking the battery off for a night.
new pipes etc will aid the flow of the air but its not gonna have a massive effect unless for example you get id of the exhaust gases quickly and efficently too.
Everything needs to be in accordance with everything else. You just appear to be doing what you think is best without knowing what is proven or even how the components acually work before you do this stuff.
every thing on the engine is modified the cylinder head port and polish is the last thing i did
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bieransri
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Location: Kidsgrove, Staffordshire
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but your using a standard ecu right?
[Edited on 04-12-2008 by bieransri]
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20valver
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Registered: 14th Sep 08
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quote:
Originally posted by Ellis
quote:
Originally posted by 20valver
quote:
Originally posted by Ellis
Do you have idea about fluid dynamics for a start?
yup, you need to know this when tuning in any form, fluid dynamics starts at the front of the car and finishes at the rear of the car
No you don't...
So from your expierence what pressures are you getting inside an airbox on your fuckin mad spi badboy?
yup, you need to know this when tuning in any form, fluid dynamics starts at the front of the car and finishes at the rear of the car
No you don't... could you explain what you mean
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20valver
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quote:
Originally posted by bieransri
but your using a standard ecu right? yup
[Edited on 04-12-2008 by bieransri]
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bieransri
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Location: Kidsgrove, Staffordshire
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may i ask why?
edit: i was gonna anyway
[Edited on 04-12-2008 by bieransri]
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