I'm running the HKS manifold with a 38mm HKS wastegate. I really want to switch to the synapse wastegate. Does anyone know where I can buy an adapter for the 4 bolt square flange to the 2 bolt standard design. I've already checked with ATP and Himni neither show it on their website.

 

I'd like to suggest that you don't want to do that. The Synapse gate is 'junk' and cant handle rotary exhaust heat.

 

Sorry just found the part i was looking for on Banzai's website. Man gotta love those guys. I have another question now. On their website it states that it will perfectly fit a 44mm Tial wastegate but Synapse only makes a 40mm and a 50mm. Will the 50mm v band Synapse wastegate fit the 44mm Tial v band flange.

 

Well what do you recommend me going with?

 

Wait! Don't answer that question. I just read the specs on the MV-R from Tial and I'm definitely going with it!

 

Before you do all that get out a tape measure and check you have the room, i didnt.
You would need another piece of the puzzle which would turn the gate down instead of straight.
I chose not to invest all that in my current set up and instead replaced the diaphragm in my hks gate. I used one from a hks copy and its been holding up great so far @20 lbs boost

I would suggest you leave it alone

 

The first question is: what's wrong with the HKS gate? Are you getting boost creep?

I run the MV-R 44mm Tial gate. It's working fine, but I decided to plumb the water cooling lines, which was a minor PITA.

The Synapse 50mm V-band flanges are larger than the 44mm MV-R flanges.

 

that hks gate is actually really good, sounds great too