Greddy D16 turbo kit. Boost loss from .7 BAR down to .55BAR. I have tried to adjust the Internal wastgate arm but it just made it worse. I have Hallman MBC on there now. Is there a boost controller out there that will solve this problem?

 

i had a very slight spike that settled down quickly with my d16 turbo and hallman. it would spike to 7 and settle down to 6. i now have a profec b and it holds boost pretty solid from 5 to 10 psi. before u go out and get a new bc tho, how is ur hallman set up? running from compressor to wg? if so, u may want to try using the intake mani for a vac source instead of the compressor. good luck

 

I tried going to the Mani.It seems to not do it as bad.