Sorry, I can't see pics on image hosters at work but this is it. Can you see the connector plug that sits right of the dip stick and just left of the throttle body motor?
That's where the sensor sits.
My thoughts on running a Stage 1 generic map with Stage 2 mods fitted after mapping are that it's not ideal. A generic map is just that, a single code intended for an otherwise standard car where it expects the car to perform in a certain way and receive fuel/air in a certain volume. Adding things like a FMIC & 3" DP will confuse the car as it's no longer receiving the volumes of air & expelling gases in the region that it expects, this can cause over fuelling which in turn leads to hesitation, bad MPG and not forgetting that the car is now working harder so EGT will be higher and may trigure fuel dump.
I have several problems which I believe are caused by running my car in this way and after much head scratching & research, me, mechanics & other enthusiasts have reached the conclusion that the mapping is wrong. The car is able to suck in huge volumes of air at the filter & TIP now which tells the turbo to work harder/push up boost, this is bad as the engine is not physically at the point at that RPM when it can ingest all of the air which causes compressor surge (air built up in the system/turbo), I am also running SMICs right now which can't cope with the red hot air passed to them by the over working turbo & then you have my 3" exhaust which is spinning the compressor wheel at a massive rate only adding to the issue. I like to add mods bit by bit to monitor the gains but it's now been pushed too far and has become upset, like I say what the car wants to do and what is is getting are too different things, it's trying to pull itself back in keeping with the code in the ECU but it can't quite do it so it's time for FMIC to go on and Stage 2 to be loaded.
If you increase the amount of air going in, then that will proportionetly increase the exhaust gases and speed up the exhaust turbine inline with this which will then further increase the amount of air being sucked in-thats how turbos work.This won't happen at the wrong revs to be ingested as it sort of controls itself ie if not enough gases being made at lower rpm then less air sucked in.
A 3" dp is just reducing back pressure which should mean you can lower the boost and get the same power, effectively slowing compressor speed not increasing it and reducing egts/inlet temps.
I agree on the generic maps though.
