Hello guys, i have been offered a hks blow off valve for my 95 typeRA, Can anyone give me any info, on what advantages they have.
Do they work similar to a dump valve? and how much should i pay for a second hand one?

Thanks, Andy.

They are a dump valve - Nice bit of kit cost circa £280 new and can be got for around £100-150 S/H

thanks for that mate, i will go and see the guy tomorrow,
he mentioned around the £100 mark,i might be able to get myself a bargain fo a change!