How the fsck are they going to know if you increase the power to weight ration by 15% or more? You can't tell me that every MOT station in the land is suddenly going to dyno every car?
Well THEIR theory is that testing is un-necessary because they are going to make us declare it ourselves! One legally binding question at tax renewal time does all the work for them! And yes, many people will lie, because they can and will get away with it, which is why the proposal is flawed and useless! This is one of the grounds FBHVC is using to get it amended.
Guy's like me CAN'T just lie, My Vauxhall powered 2 litre Toledo is registered as such with DVLA and has been since 2011. I have gone from a 1296cc 61bhp engine to a 1998cc 135ish bhp unit (and lightened the car considerably) It doesn't take a genius to tell that I have improved my P2W ratio by upwards of 100% and there is at DVLA a paper trail to prove it! So aside from any moral or legal considerations, it would be a bit stupid for me to fib!
Not that I care much, I will continue to have my car tested every year regardless and as currently proposed, this will not affect my Historic VED entitlement. However there are a few ambiguous lines in the current proposal that make me think DVLA will be including this criteria for VED exemption in the future.
This DOES irk me considerably, since I went to a lot of trouble and jumped through loads of buerocratic hoops to keep my car legal and above board. Under the "8 point rule" it has 9 points, it is notified and registered at DVLA as exactly what it is, the engine is of certified provenance and I paid several years VED at a higher rate than I needed to, to stay legal. The last 3 years, it has been VED exempt and NOW they want to move the goalposts and tell me my car is not of "Historic interest"? PAH!