Air Flow and Flaps

[Brm Brm]

One for all you technical gurus...

A friend of mine recently passed me some literature from a company called AJ6 engineering who are apparently well thought of in Jaguar circles. Reading their literature I was interested to note that they claim they can obtain a significant power increase (20-30bhp ish) by fitting a weaker spring to the air flow meter flap then re-mapping the ECU. Having a Jaguar airflow meter on my SEAC (2 Sheds pse tell me if I've got my wires crossed) this obviously sounds interesting and as a similar mechnaism is, as far as I'm aware, used in the air flow meters on other pre-hotwire wedges I would be fascinated to hear whether this is a credible claim. And if so, how does it work? Or have I got completely the wrong end of the stick here???
Anyone got any thoughts - or has anyone done this???

[2 Sheds]

Yes BrmBrm yours has the Jag meter, it has a spring tension adjustment facility, so not sure why they would need to change the spring. also modifying the ECU is expensive, over £300 !,yours has been done buy the way. I assume that the Jaguar has a very different fuelling system ?

[shpub]

You can get this by fitting a bigger air flow meter, bigger injectors and plenum and then re-chipping. Did it to the 390.

www.-t-v-r-services.co.uk for the before and after power curves in the engine upgrade section.

Steve