my mbc is weird

[G Curlz]

i have a turbo xs mbc and sometimes it holds 13lbs but sometimes it will just pull right to 20lbs but it falls on its face its annoying?Is there anyway to fix this? Whats a good fuel system upgrade and cost for it because im getting a bigger turbo soon?

 

[zachyd23]

i have a turbo xs mbc and sometimes it holds 13lbs but sometimes it will just pull right to 20lbs but it falls on its face its annoying?Is there anyway to fix this? Whats a good fuel system upgrade and cost for it because im getting a bigger turbo soon?

What size turbo? You could have boost leaks also boost creep.

 

[G Curlz]

yah no leaks and its a 14b maybe my mbc is no good

 

[zcoh2gdsm]

when it pulls to 20psi and then falls on it's face you're most likely hitting a fuel cut. remove the mbc and run a straight line to the WG and see if it still happens. if it doesn't then it's your MBC.

 

[zachyd23]

Alright then either your mbc isn't hooked up properly or it's bad. Have you tried adjusting the screw of the mbc?

 

[jpmxrider489]

The correct way to hook it up is just with the jpipe and wastegate. NO TEES. Maybe you got a bad one. As far as fuel mods, how about a wall 255 and afpr.

 

[Jkorny169]

When you say some times it creeps to 20psi what happends if you take the boost controller out? Does it hold constant pressure? (falty wastegate?) How do you have it hooked up? (perhaps backwards) Boost controllers are simple, if you think its junk take it apart and see if anything looks weird. I found this picture form turboxs's web site.

 

[G Curlz]

Wastegate holds 10psi and its hooked up right i made sure.its weird it works most of the time screw it ill just upgrade my fuel system and get a safc