So I'm reading through the blue book and looking at the following passage relating to allowed engine mods in the road going production class.

"For Road-Going Production Cars, the cylinder block
and cylinder head must remain in the original position
and be of the original type and material. Induction is
free (forced induction equivalency applies as in 49), as
are exhaust systems, but must remain in the same
capacity class as the original car or the manufacturer’s
specified option for the model and engine."

I am specifically interested in the part in bold, where it states induction is free. I want to change the current induction for throttle bodies. Which is ok under the rules?? But what might be a gray area is that I want/need to switch to a megasquirt ecu to control it.

Would this be allowed?? Would the car require it immobiliser functions to still work or could i completely ditch the cars brain provided it was still road legal.

Any one got any advice??

Liam, from 2010 the MSA are changing the "Road Going" classes.
There will be
Road Going Series Production Cars - Minimum 1000 cars built per annum.
Road Going Specialist Production Cars - Minimum annual production of 20 chassis which do not qualify as Road Going Production Cars.
These classes are recommended for 2009 but mandatory for 2010.
There are similar class changes for "Modified Cars" - but needless to say there is slightly different wording which will no doubt lead to further ambiguity
As for induction you can change to throttle bodies and change ECUs as "electrics are free".

thankyou for the advice

Hi Liam,

you are allowed to have anything you like on the induction side as it states in bold. If you need to change the ECU to control the new induction TB's or whatever you are running then that is fine. The idea of this rule is to allow modification of the engine but you have to keep the original block and head (no putting BDA heads on x flows etc)
once you have seen a few of the road going production cars at the events most of them are barely road legal race cars