Hi Gary
You can compare my car with yours, because my induction noise comes from a pair of 45’s. But I had no problem during the Summer, only during a cold day in October. So I now have a number of aids to reduce this, one of them is a noise meter, and a pit to car radio to tell me to keep it down. The noise meter is well worth the investment, before you spend on anything else, because it sound like you where only just over the limit like me, and a little tweek or a warmer day is all that’s needed to avoid the noise problem.
Either way, hope to see you soon at Bedford 😬
Chris....
H15 SVN Get it !