16g Evo flapper size / boost creep

[Marty van den Bosch]

Ok, so I got a 16g EVO turbo now, it is at L&R racing awaiting surgery.

It is having a 34mm flapper and a minor porting of the wastegate housing done.

I have heard and read many different stories about boost creep with the 16g's and I am concerned that with the flapper being installed and the minor port job, it may not be enough. I have read that it may not be.

I plan to soon have a full 3" turbo back (Stainless or aluminized is still no known)

Can anyone give me thier experiences with a 16g, and a 34mm flapper and 3" exhaut?
Was the port big enough?
Did your boost creep with this setup?
How big of a flapper did you add?
etc...

Thanks

Looks like the Turbo will be going in maybe by Saturday, so the more responses the better.

PS : With the Evo's housing being so much thinner than the big 16g, would anybody still recommend porting out the intake?

[Robin Toor]

because the evo is bigger than the big 16G, I dont think the porting is necessary. The 34mm flapper should be enough to eliminate boost creep, everything should be ok. I dont think boost creep is an big of an issue on the evo when compared to the big 16G.

[Kevin Standeven]

but just to make sure, buy a nice big evo iii o2 housing
slowly your car will become an evo...

[John Hartman]

Let Lowell know your concerns and your plans.  He will do it right for ya.

But yea, the O2 housing is gonna be a sticking point, if left stock.