Engine upgrades - power and smoothness

[blitzracing]

The latest version of Roverguage CD is below. You dont need to reinstall- simply delete the current RoverGauge folder you have and put this one in its place. Simple. As for shunting Jools is correct the cat map should not be messed with to keep the lambda cycling correctly around 14.7 AFR, but you can push the fuel up in the map at the specific shunt points far enough to over ride the ECUS ability to trim it back. If you can get around 13:1 AFR the shunting pretty much goes in my experience. It crude thing to do - Id much preferred to switch the lamda cycling off from say 1500 rpm to 2000 rpm, but have not found a way to do it. When you do make the map richer, you dump a bit more un burnt fuel into the catalysts that will make them run hotter- I had visions red hot manifolds at 1600 rpm, but it does not seem to be the case, Id assume that the relative amounts of un burnt fuel are small as the throttle is near closed at the shunting point anyway not to cause excess heat. Its a narrow line you tread as the MOT requires a fast idle CO and HC test that could be around the shunting points, and if you saturate the fuel map you could fail on these tests. Mind you worse case you could switch maps before the MOT.

https://www.dropbox.com/sh/i0acxr8nwr10ow6/AAAIPux...