About chips and mods Hi,
There are a lot of posts about tuning boxes and chips for boosting power in cars. I was wondering that is all that really needed? Most engines run at 7500rpm max in stock cars. For that kind of rpm a 16bit computer is enough. If you actually look at the peak CPU utilization you will see that with a 16 bit computer its around 50-70% and in case of 32bit it is 40%. why 32bit. The cost difference between 16bit and 32bit is almost zilch and 32bit sound great in adverts. Infact in cars like santro/zen etc the CPU utilization hardly exceeds 30%! So why need that extra computer. Why not run a better software on the same 32bit computer. The results may not be that mind boggling, but they will be definately significant. This way the hardware cost will be zero.
This fact I came to know from a Bosch software engineer who was on linux channel on irc. I got into a long conversation with him. He told me that in low end cars, the CPU utilization is so low that a better software algorithm can give around 20-30% increase in power. Then I asked him why dont manufacturers do that. He said that while manufacturing lot of factors are important like FE, engine life etc., So manufacturers arive at the best solution. Increasing power will take a hit on FE, which may appeal to a minority, but will take away the majority. In low end cars FE/running cost etc., is more important than power. In case of sports cars already the software is tuned for performance. It is still possible to increase power but that will affect engine life. So the manufacturers need to strike a balance.
Now my question here is to the modifiers. Has anybody looked into just software upgrades? For example Tata Indigo petrol relies a lot on software for better power. TDi indigo has a better torque curve by adjusting gearing and better software. Anyone tried to load a different software for the octavia/crdi to give better power. Such a mod will not require any extra parts, and since our workshops are not so wise it will not even void the warranty! |