Is the stock FD blow off valve much different/better than the stock FC one? I think FD's boost about 10psi stock... so would they have a slightly better blow off valve from the factory? If so, what boost pressure would they be good up to? Just lookin for cheap alternatives....

 

go to ebay and go to auto parts, type in mazda rx7 parts, then click on newly posted items, there is an HKS super bov with the adapter for stock ic application. The bid is at 41.00 and I purchased one for 46.00. It's loud as HELL and works great. Straight from Japan

 

They are basically the same thing.&nbsp They still leak under boost.


-Ted