Lets be honest, anything cast can have porosity issues but you'd hope most would be caught by quality control before making it through to sellers
I know james's SEM had a pin hole in it that you welded up but i believe this was replaced and i'd say a very rare case
The generic plenum's that tuffty used and you will be offering could also suffer from this unless you are planning on pressure testing each manifold made
I was under the impression your manifold would be in the £450 region
Plus the SEM's known to be the best mani for the 1.8t
3 porous ones I know of..
having been recipient of the 1st UK one, their cast quality has suffered on recent batches.
All sorted out professionally by SEM direct I will add (as opposed their reseller...... who was not particularly interested
)
I know the test results from SEM, I tested the thing
flowbenched and power... It works well
I also know how the Xcessive one performs.. and its power gains are comparable. Its also configurable to be both handed where the SEM is only available one handed. If it was'nt working I would'nt use it. Simples
Plenum cast quality on the Xcessives I've had so far have been ok. No porousity, but its easier to cast as its just a plenum vs complete manifold casting process wise.
My target price is from £450 yes, dependant on options on outlets, finish etc....
If you get a good deal on a SEM go for it.. They are superb performing items. If you can get a SEM for £450 inc vat go fo rit, complete bargain...
The QC has let them down however.. a Lot of $$ for something which leaked.. Disappointing it got out of the door.