kompress said:
Anyone tried the Upsolute chipping of their ECU? For $500, seems a bit steep.
Which car do you have and where are you located? The UP chip is $450, not $500, although pricing may vary if you go to a full sevice shop for the install (I just do chips, in MA).
With the supercharged cars, we optimize timing, fuel, and electronic throttle response and develop the tuned program from your ECU's existing stock code. As you may know, boost can not be modified like a turbo car, so the gains with the chip are typical to those of a N/A car ie 5-10%. Cars vary in output from the factory, so there is some variation in the results. Note that an increase in redline might cause the supercharger/engine relationship to change such that there is a boost increase.
For those looking for bigger power gains than just the chip, you can add a pulley kit to increase boost, and then use a chip tuned for the pulley. We offer a custom tuning service for exisiting customers...it is an extra $150, you provide a dyno plot with A/F and we use it modify your exisiting file.
By sourcing a pulley-only from someone like kleeman or ASP and using our chip and doing a little of your own leg work you can put together a high-performance system for much less than others are charging for their kit...
Here is a link you might have seen with such a setup:
http://www.eurotuner.com/featuredvehicles/99878/
Note that I don't think the 1.8l boost can be raised, it's already 10-11 psi from my research. The older Kompressors (2.3l) run ~5.5 psi stock, so there is some margin for boost increase before the supercharger turns into a giant heat pump.
If someone can accurately measure their stock pullies I'd be happy to work up a model of the system.
Lynn, I'm new to these forums, do you have some links to the info/discussions you are talking about?
Regards,
-Scott