Hey guys I have the following parts on my car with a tune

280s
780 inj
fuel rail
springs retainers
tbe no cat
exede
samco hoses
mbc
walbro 255
cam gears

my car spikes at 21 psi and settles to 14 psi by redline.

i dont want to turn up the boost with the mbc and have an unsafe spike just to have it at 19 psi to redline.

do you guys know a way to run 21-22 psi at redline on pump 91? if this isnt possible then how can i keep the boost from bleeding off so bad top end. Mid range is really killer but the car gets creamed top end by the lack of boost.
thanks

Anand

 

Are you on the stock BOV? This could be the culprit, since the Hallman should hold the boost steady.

 

The Stock turbo without alky is safe for a spike of 23-24... with alky its good for a safe spike of 27-28. Before alky i had mine set to peek and hold at 21.. if you have a flash and MBC why is it tappering off too 14

 

i dont understand why its tapering either. i think it is the stock bov, sounds as if its letting air out at high rpms

 

which boost gauge?

maybe a leak?

if you have hallman, it could be that you're using the light spring.