T4 2.5TDI 102 power upgrades

Whilst the van is off the road (courtesy of the DVLA and a missing log book) I thought I'd sort out a few bits and pieces.

I intend to flash it which will bump up my torque & power but I've been thinking about how to get more power.

Can anyone enlighten me as to the exact difference between a 102 & a 150 engine. Is it just a case of bigger injectors and a different map or is the intercooler bigger?

Is it possible to fit a bigger intercooler in the front of a T4 (long nose) and how beneficial will the gains be?

Was also going to blank off the EGR which I know will help but wondered if anyone makes a replacement pipe to get rid of the whole EGR gubbins and make the airflow better without the inherent restrictions to airflow?

Finally my airbag steering wheel looks just like the (nicer) leather one in my passat B5.5 and I wondered are they the same? Do they have the same splines, depth etc to swop with other stuff like passat, golf etc?

Thanks for the help, might as well use the month i've got to sort out as much as possible.

 

Don't mean to be dumb but what does FO mean?

 

As far as trashing clutches goes, mines an auto so does anyone think that it will cause problems, especially if I get power figures up to around 160bhp.

 

Is fitting the intercooler a big job? Does it replace the existing one sat on top of the engine or is it in addition too?

 

Cheers