saxo engines

[saxo_boi]

can anybody help me with this? because its annoying me lol. there are 2 types of sport version saxos the VTR and the VTS. i have a magasine which shows their performance stats such as 0-60 etc. they both have a 1.6 engine yet the VTS has a faster top end speed and all round quicker stats! how is this possible? even though they have they same size engine!

[Tim Baxter]

Without going to the website to research it, engines nowadays are governed by the engine management system.  This system can 'de-tune' the same engine to give better mpg or better performance.  Things that can be varied physically are valve size, compression ratio, piston shape etc.  Additionally, the management system can change air/fuel mixture, quantity of the same, valve timing and even response to the accelerator pedal now that engines are moving away from a direct connection between the two.

All the above combine to give the manufacturer the performance it wants for different models.  I run a 2 litre turbo diesel which has 3 different power outputs according to which model it's put in and is governed by the management system.

[Jay70]

I think one simply has more BHP even though the cubic capacity is the same.  This can be controlled electronically and/or by mechanical tweeks. 

[rosita]

The vts is a 16 valve angine, the vtr is 8 valve.  I've driven both and owned a vts for a couple of years - the vtr is nothing special, the vts is super fast!

[saxo_boi]

o right so its about tuning it, it didnt think abou that. also rosita how lucky are you!id love to have one!lol thanks for your answers everbody

[Cockney_si]

Yes it's the old 16 valve issue.....although quick a Saxo is still only a 2 star euro-ncap car, so make sure you don'y run it into anything!

[PhilD]

I thought the VTS had bigger sub-woofers, or is that just the one that drives past my house at one o'clock in the morning?