ECU remapping on a turbo diesel - pro's and con's?

REKIBorter":1mvsv4mv said:
Had my Volvo V70 D5 chipped by Volvo. Instant increase in torque and now has 204BHP. Did not change the insurrance premiums as work done by / insurred through Volvo. No change to MPG figures either. Worth every penny :D
Does the D5 have a similar, interesting kind of engine and exhaust note - like the petrol I5 engines have?
 
orange71":2dmvnsyw said:
legrandefromage":2dmvnsyw said:
his Saab 2.2 has 115PS and the Vectra had 125ps for the identical engine - bunging 10BHP wouldnt do much to the mechanicals but would add extra torque and acceleration. It makes alot of difference with diesels.

Mine's the earler 115 engine - after 2000 it went up to 125.

good debate here. really in two minds - probably falling on the 'probably not worth doing' side :D
I think it comes down to what do you want most out of the car - driving enjoyment, or economy, reliability and longevity.

Plus how long you intend keeping it, how well you'll maintain it, and how you'll likely drive it.

And, perhaps, most importantly - how much you'd have it chipped by. Most chips / ECU mods for turbo cars seem to be in the range 30-50 bhp (bigger jumps tend to have other mechanical requirements) with a corresponding jump in torque output, too.

Depending on how old it is, how well it's been maintained, how it will continue to be maintained, and how you'll likely drive it, that tends to be signficant increase in mechanical demands.
 
legrandefromage":2ifn0e0q said:
10 extra horses can make all the difference at the lights.
What I mean was that nobody bothers to chip a turbo car for just 10bhp. These days, it's always more than that (probably in the range of 30-50).

Plus, where getting away from a standstill is concerned, torque is more a factor - since peak power is normally reasonably high up (albeit that's not such a high point for diesel engines ;-)) in the rev range.
 
Neil":ejdbaao8 said:
REKIBorter":ejdbaao8 said:
Had my Volvo V70 D5 chipped by Volvo. Instant increase in torque and now has 204BHP. Did not change the insurrance premiums as work done by / insurred through Volvo. No change to MPG figures either. Worth every penny :D
Does the D5 have a similar, interesting kind of engine and exhaust note - like the petrol I5 engines have?

The old VW and Merc D5 had a fantastic sound, the Volvos are a lot quieter but are still fun on full beans. I think RB's is the same as my friends D5. That was very fast with real push into the seat acceleration.
 
Neil":akrwykbl said:
legrandefromage":akrwykbl said:
10 extra horses can make all the difference at the lights.
What I mean was that nobody bothers to chip a turbo car for just 10bhp. These days, it's always more than that (probably in the range of 30-50).

Plus, where getting away from a standstill is concerned, torque is more a factor - since peak power is normally reasonably high up (albeit that's not such a high point for diesel engines ;-)) in the rev range.

My 130 PD TDI suffers from tremendous torque steer.

Its in an odd state at the moment. Its software switches the boost to atmosphere when it detects overboost. It could be any number of issues such as sticky vanes on the variable vane turbo or a knackard sensor or 3.

Anyway, its peak power comes after 3000rpm all the way to the redline. That is very awkward! cleans the soot out though...
 
Those 2.2 GM diesel engines weren't exactly the best - my Saab dealer always stocks the rebuild kit for the top end of them, they go so often apparently.

I hope it can't be as bad as the 1.7 TD ones in Cavaliers (had one new in 1994) which turned the whole car into a vibro-massager. :D

I still love my 2.3 Turbo 9000...
 
I sold my 2.3 Turbo 9000 as I no longer got mileage expenses :roll: hence the diesel.

It does vibrate a fair bit on idle - fine at speed.

Only problem I have with it is a 'lazy' starter motor - in cold weather it can take 20 seconds of cranking before it starts. Apparently this is a known feature... :roll:
 
Should be a fairly simple sum to calculate if it is only mpg you are interested in.

How much does it cost to do?
What mpg increase will you get? (If any!)
How long is the payback on 30 mile commute?

I doubt it will ever pay.
 
retrojon":3f8fwjl0 said:
Should be a fairly simple sum to calculate if it is only mpg you are interested in.

How much does it cost to do?
What mpg increase will you get? (If any!)
How long is the payback on 30 mile commute?

I doubt it will ever pay.
It's never that easy, either.

If you were to simply do it on merit, you'd also have to try and account for the potential changes in driver behaviour from the additional Grin Factor (TM) from having additional ponies available ;-)
 
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