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[TheBoy]

2.5 petrol, personally, I wouldn't waste your money on chips 

A set of 3l cams apparently gives much better results

[pembsomega]

thats what i thought chiping a n/a petrol engine is normally a waste of time unless you doing alot of other work too

[TheBoy]

thats what i thought chiping a n/a petrol engine is normally a waste of time unless you doing alot of other work too

I have chipped my 3l


But thats because there is not a huge amount more I can do for sensible money for extra power.  With a 2.5, it seems the cams are a more cost effective power upgrade

[pembsomega]

thats what i thought chiping a n/a petrol engine is normally a waste of time unless you doing alot of other work too

I have chipped my 3l


But thats because there is not a huge amount more I can do for sensible money for extra power.  With a 2.5, it seems the cams are a more cost effective power upgrade

how much did you gain??

chipped an old wrx scooby berfore, with better fuel pump to match and fuel rails.

cost £300ish, gains 55bhp, from 238bhp to 293bhp proven on rollers! (it was already decatted and panel filter)

[TheBoy]

thats what i thought chiping a n/a petrol engine is normally a waste of time unless you doing alot of other work too

I have chipped my 3l


But thats because there is not a huge amount more I can do for sensible money for extra power.  With a 2.5, it seems the cams are a more cost effective power upgrade

how much did you gain??

chipped an old wrx scooby berfore, with better fuel pump to match and fuel rails.

cost £300ish, gains 55bhp, from 238bhp to 293bhp proven on rollers! (it was already decatted and panel filter)

Minimal, as N/A.

Not dyno'd (pointless, as auto), but would say the 10-20% claims are optimistic, maybe the lower even on a *really* good day.

[Road Hog Mad]

Petrol engines, i would agree, but in the case of the 2.5TD in  the Omega, it was de-tuned from BMW spec in the Omega, chipping it, brings it back to full BMW spec, you do get more power and better mpg because the engine is not having to work as hard.

thats what i meant, but if you flog your car everywhere to the limit then your mpg would still suffer? adapting to the new characteristics and driving accordingly then youll getter better mpg

Soon as its chipped you will loose mpg as you will be booting it everyware with all that nice new found power. But once you settle down and do 'normal' driving the extra power helps.

On a run, 3.2 V6 is just as economical as a 2.2!

YEP!!!

I followed a mate back from London, me in a 3.0 and him in a 2.2, we did 75-80mph and I think I got 1 more mpg than him, something like 32mpg! 

[Shackeng]

Sorry, what is 'lol chipping'. I already have a chip, but it would be nice if it were selectable

I would like one, that is selectable.
I already have a chip, but it's not fitted.

Had it in, the extra power was nice, but the less MPG wasn't.Towing a caravan with the extra BHP was great, but the low 20s MPG was not.
Back to standard now, and it's returning 27 MPG towing. And returning 33 MPG local running around.

I'm going to investigate getting a chip that will give me both economy coupled with the extra BHP.

Mick

A chipped 2.5td gives more power and more mpg with the full BMW spec chip, or at least everyone else on here with a chipped 2.5td gets more oomph and more miles.
MickAP's is just a freak of nature. 

Not quite everyone, as I certainly don't, and I drive fairly sedately most of the time, hence my original post. :-/

[Shackeng]

Sorry, what is 'lol chipping'. I already have a chip, but it would be nice if it were selectable

lol is short hand for 'laugh out loud' so its not a reference to type of chip 

more bhp and more mpg cant be achived with a chip alone

Petrol engines, i would agree, but in the case of the 2.5TD in the Omega, it was de-tuned from BMW spec in the Omega, chipping it, brings it back to full BMW spec, you do get more power and better mpg because the engine is not having to work as hard.

Not true in my case.

[Turk]

Sorry, what is 'lol chipping'. I already have a chip, but it would be nice if it were selectable

lol is short hand for 'laugh out loud' so its not a reference to type of chip 

more bhp and more mpg cant be achived with a chip alone

Petrol engines, i would agree, but in the case of the 2.5TD in the Omega, it was de-tuned from BMW spec in the Omega, chipping it, brings it back to full BMW spec, you do get more power and better mpg because the engine is not having to work as hard.

Not true in my case.

That's two duff uns now    
Gertcha...ya pair o' freaks !!      

[zirk]

Has anyone thought of fitting a 2.5td with an 'optional' chip or re-map? I'm thinking that it would be useful, in the interests of fuel economy, if you could select the chip or remap with a switch - Sports mode?- when required, and have it in normal mode for long range cruising.

To answer this part of the question, then yes, but only if the cars ECU excepts the eprom being switched whilst running. Ive had a switchable eprom piggy back board that I made myself for my Cosworth, just by using the enable pin on the prom and piggy backing the address and output pins. worked quiet well. never tried it in the Mig (petrol or Diesel) but as long as the main ECU is happy having the binary output being changed whilst working then should work?

Chris. 

[zirk]

thats what i thought chiping a n/a petrol engine is normally a waste of time unless you doing alot of other work too

I have chipped my 3l


But thats because there is not a huge amount more I can do for sensible money for extra power.  With a 2.5, it seems the cams are a more cost effective power upgrade

how much did you gain??

chipped an old wrx scooby berfore, with better fuel pump to match and fuel rails.

cost £300ish, gains 55bhp, from 238bhp to 293bhp proven on rollers! (it was already decatted and panel filter)

Minimal, as N/A.

Not dyno'd (pointless, as auto), but would say the 10-20% claims are optimistic, maybe the lower even on a *really* good day.

Been playing about with some ex-police 3.0 Mv6 Facelift chips lately TB, they seem to make quiet a bit of difference compared to the other Superchips and Courtenay ones I have 

[TheBoy]

thats what i thought chiping a n/a petrol engine is normally a waste of time unless you doing alot of other work too

I have chipped my 3l


But thats because there is not a huge amount more I can do for sensible money for extra power.  With a 2.5, it seems the cams are a more cost effective power upgrade

how much did you gain??

chipped an old wrx scooby berfore, with better fuel pump to match and fuel rails.

cost £300ish, gains 55bhp, from 238bhp to 293bhp proven on rollers! (it was already decatted and panel filter)

Minimal, as N/A.

Not dyno'd (pointless, as auto), but would say the 10-20% claims are optimistic, maybe the lower even on a *really* good day.

Been playing about with some ex-police 3.0 Mv6 Facelift chips lately TB, they seem to make quiet a bit of difference compared to the other Superchips and Courtenay ones I have 

I'm always willing to test one if its spare for a week or 2 (though not currently, due to the Engine Noise thread!)

[Seth]

Sorry, what is 'lol chipping'. I already have a chip, but it would be nice if it were selectable

lol is short hand for 'laugh out loud' so its not a reference to type of chip 

more bhp and more mpg cant be achived with a chip alone

Petrol engines, i would agree, but in the case of the 2.5TD in the Omega, it was de-tuned from BMW spec in the Omega, chipping it, brings it back to full BMW spec, you do get more power and better mpg because the engine is not having to work as hard.

Not true in my case.

That's two duff uns now    
Gertcha...ya pair o' freaks !!      

Same here too, so that makes three of us, my Sospanite buddy!

[TheBoy]

OK, we have 3 people who suffered worse MPG.  Lets see if we can find anything common.

Which ECU - 214, 215, 427, 428 ?
Gearbox - Auto/Manual ?
If 427 chip, which option - normal, +10, or 'old smokey!' ?

[UrbanFox]

Has anyone thought of fitting a 2.5td with an 'optional' chip or re-map? I'm thinking that it would be useful, in the interests of fuel economy, if you could select the chip or remap with a switch - Sports mode?- when required, and have it in normal mode for long range cruising.

To answer this part of the question, then yes, but only if the cars ECU excepts the eprom being switched whilst running. Ive had a switchable eprom piggy back board that I made myself for my Cosworth, just by using the enable pin on the prom and piggy backing the address and output pins. worked quiet well. never tried it in the Mig (petrol or Diesel) but as long as the main ECU is happy having the binary output being changed whilst working then should work?

Chris. 

Which Cosworth ECU are you running? L1, L6, L8 or P8?

I personally wouldn't of done it to an L8 or a P8, too rare if anything goes wrong with it..