Just buy the cheaper one and remap it....

[ModernAndy]

underphil said:

Current Mazda 3 & 6

Which engines in each? It needs to be the same car where you pay more for a more powerful version that just has a different software setup

[Jimmy Recard]

The 2.0 diesel in the Rover 75 and MG ZT is definitely just a mapping difference.

[ModernAndy]

Jimmy Recard said:

The 2.0 diesel in the Rover 75 and MG ZT is definitely just a mapping difference.

I had a look and they seem to remap to the same bhp but different torque. Is the gearbox, etc. perhaps different?

[Jakg]

TheAngryDog said:

Mg Zt / rover 75 cdti 114 was identical to the 131 engine apart from a remap.

A lot of "remappers" don't realise this.

ModernAndy said:

I had a look and they seem to remap to the same bhp but different torque. Is the gearbox, etc. perhaps different?

Gearbox etc is all the same - the fact that remappers quote different figures on the 114 / 131 version says more about the remapper than the car!

[ModernAndy]

Jakg said:

TheAngryDog said:

Mg Zt / rover 75 cdti 114 was identical to the 131 engine apart from a remap.

A lot of "remappers" don't realise this.

ModernAndy said:

I had a look and they seem to remap to the same bhp but different torque. Is the gearbox, etc. perhaps different?

Gearbox etc is all the same - the fact that remappers quote different figures on the 114 / 131 version says more about the remapper than the car!

Possibly but I can't find a remapper stating they tune both models to the same stats.

[Jakg]

ModernAndy said:

Possibly but I can't find a remapper stating they tune both models to the same stats.

There aren't really any "respected" companies who offer remaps for these cars (e.g. as you might find with DMS and BMW or similar)

You'll just have to trust me - it's difficult to prove a negative (that there are no differences)!

[df76]

ORD said:

df76 said:

Mountune also now has a map for the 140bhp engine (plus quite a bit of add on kit), and the same turbo is used in the fiesta r2 rally car (170bhp plus). Would be interesting to hear what they've encountered over the last year or so.

I doubt any road driver would tolerate the level of maintenance and repair that those cars will see! A turbo might last, what, a race?

Yes, would be interesting to know what their turbo service intervals are. Would tell you a lot.

[ModernAndy]

Jakg said:

ModernAndy said:

Possibly but I can't find a remapper stating they tune both models to the same stats.

There aren't really any "respected" companies who offer remaps for these cars (e.g. as you might find with DMS and BMW or similar)

You'll just have to trust me - it's difficult to prove a negative (that there are no differences)!

I don't think it ought to be that difficult. You'd just need to find a spec sheet giving the original part numbers of the gearbox, clutch, etc. I don't know if there's a thread out there with rolling road results on both engines from the exact same remap. I'm only going on estimated figures at the moment but it is interesting that they all have some difference between the 2 engines.

[Jakg]

ModernAndy said:

I don't think it ought to be that difficult. You'd just need to find a spec sheet giving the original part numbers of the gearbox, clutch, etc. I don't know if there's a thread out there with rolling road results on both engines from the exact same remap. I'm only going on estimated figures at the moment but it is interesting that they all have some difference between the 2 engines.

Rimmers list all the part numbers for everything here if you want to wade through it - http://www.rimmerbros.co.uk/SubCategory--MG-ZT--m-...

Specifically, if any part changes, it's done on VIN or date (i.e. "from 2003 all diesel Rover 75's used a blue coloured jiggle flap"), not on the power output specified. To prove this the other way, the MG ZT 190 has larger front brakes than the rest of the range and it specifically says "Except 190PS - MG ZT & ZT-T" and "190PS - MG ZT & ZT-T" on the other part.

You'll notice a distinct lack of any rolling road graphs for any remaps on the 75 / ZT - there just aren't any proper companies out there doing it. I had a remap and when I put it on a rolling road it was obvious the sellers claims were wild exaggerations.

[csd19]

ModernAndy said:

andburg said:

csd19 said:

dme123 said:

I believe the 5 cylinder Volvo D3/D4 engines were just software differences. The Polestar map for both engines take them to exactly the same outputs.

Another pair of Volvo engines are the Euro IV compliant 2.4D(163bhp) & the D5(185bhp), this was purely a software difference between these two.

engine may be same but drivetrain is not.
The 163bhp 2.4d has a smaller clutch and flywheel than the 185 or so I was led to believe on the Volvo forums a few years back.

I thought there'd have to be something different.

Getting back to the original point which I might now rephrase slightly; is there actually any car you can buy where there's a more powerful version of the exact same engine and the ONLY difference between the 2 cars is a remap. That now includes exhausts, clutches, gearboxes, materials the components are made of, size of turbo actuators, etc.

There's been so many examples given but it seems they've all been unpicked in some way.

I was only referring to the engine in my post, much in the same way as the original posts on this thread did before we widened the criteria...Same gearbox if its an auto though

[ModernAndy]

csd19 said:

ModernAndy said:

andburg said:

csd19 said:

dme123 said:

I believe the 5 cylinder Volvo D3/D4 engines were just software differences. The Polestar map for both engines take them to exactly the same outputs.

Another pair of Volvo engines are the Euro IV compliant 2.4D(163bhp) & the D5(185bhp), this was purely a software difference between these two.

engine may be same but drivetrain is not.
The 163bhp 2.4d has a smaller clutch and flywheel than the 185 or so I was led to believe on the Volvo forums a few years back.

I thought there'd have to be something different.

Getting back to the original point which I might now rephrase slightly; is there actually any car you can buy where there's a more powerful version of the exact same engine and the ONLY difference between the 2 cars is a remap. That now includes exhausts, clutches, gearboxes, materials the components are made of, size of turbo actuators, etc.

There's been so many examples given but it seems they've all been unpicked in some way.

I was only referring to the engine in my post, much in the same way as the original posts on this thread did before we widened the criteria...Same gearbox if its an auto though

that's fair enough as I hadn't thought that far ahead in my initial post and good point about the auto.