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Author Topic: 2.5 td chip  (Read 1028 times)

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semisheen

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2.5 td chip
« on: 09 May 2009, 21:02:34 »
More a curiosity question
what parts of the ecu does it modyfy IE:
does it didgitally advance the pump timing / raise the boost presure

anyone any ideas ?
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Omegatoy

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Re: 2.5 td chip
« Reply #1 on: 09 May 2009, 21:30:40 »
Quote
More a curiosity question
what parts of the ecu does it modyfy IE:
does it didgitally advance the pump timing / raise the boost presure

anyone any ideas ?

lolol someone who has one fitted tell him as im biased ;D
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unlucky alf

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Re: 2.5 td chip
« Reply #2 on: 09 May 2009, 21:32:34 »
dunno but it goes like stink when fitted :y
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MickAP

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Re: 2.5 td chip
« Reply #3 on: 09 May 2009, 22:23:41 »
Quote
dunno but it goes like stink when fitted :y

I've got one fitted also, but like you say I dunno but it don't half make a difference.

Mick
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semisheen

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Re: 2.5 td chip
« Reply #4 on: 09 May 2009, 22:44:18 »
Kool ....just got to get rid of the slush box cos its doing me head in (its doing 21.9 to the gal) ....hopefully before end of the month then ill be seeing OT about a chip
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TheBoy

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Re: 2.5 td chip
« Reply #5 on: 09 May 2009, 23:14:38 »
Never actually measure it, but my suspision is it raises the injection pressure predominatly. Not sure what else it could do, as turbo is no ecu controlled.
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Grumpy old man

semisheen

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Re: 2.5 td chip
« Reply #6 on: 09 May 2009, 23:35:33 »
I thought the turbo was / could be ECU controlled as "A pipe" goes from the inlet manifold to a sensor/switch near the power steering res
or is this for somthing else
ive prob got the wrong end of the stick
i had not thought of the greater fuel quantitys but thats a good point
i know usually on turbo  petrol re-maps the turbo pressure is often fooled & then the injector pcm is changed to allow more fueling as the origional maps of the ECU wouldnt allow enough fueling thus would be to lean
Saying that Diesels are a difrent ball game & run a higher boost compared to a petrol
has anyone tried a big front mounted intercooler after chipping their omegas
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TheBoy

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Re: 2.5 td chip
« Reply #7 on: 09 May 2009, 23:40:58 »
Quote
I thought the turbo was / could be ECU controlled as "A pipe" goes from the inlet manifold to a sensor/switch near the power steering res
or is this for somthing else
ive prob got the wrong end of the stick
i had not thought of the greater fuel quantitys but thats a good point
i know usually on turbo  petrol re-maps the turbo pressure is often fooled & then the injector pcm is changed to allow more fueling as the origional maps of the ECU wouldnt allow enough fueling thus would be to lean
Saying that Diesels are a difrent ball game & run a higher boost compared to a petrol
has anyone tried a big front mounted intercooler after chipping their omegas
as previously said, td turbo is manual.

Whilst not the largest intercooler, its reasonably effective, later ones also fan a fan for forced cooling at slow speed.
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Grumpy old man

semisheen

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Re: 2.5 td chip
« Reply #8 on: 10 May 2009, 00:18:17 »
Indeed your right again TB the boost pressure is indeed regulated mecanically the bit i was babling on about is apparently a "charge air pressure sensor"
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Turk

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Re: 2.5 td chip
« Reply #9 on: 10 May 2009, 00:56:59 »
Quote
Kool ....just got to get rid of the slush box cos its doing me head in (its doing 21.9 to the gal) ....hopefully before end of the month then ill be seeing OT about a chip

Mine should be fitted by Monday evening. :y
At the moment it's sat 200yds away in the Royal Mail Sorting Office and it's closed 'til Monday. Missed the Postie this morning >:(
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