2G High boost spiking and fuel cut

[96talontso]

I fixed all of my boost leaks and i still have fuel cut at about 6000 rpms. I think it is just fuel cut because my boost is spiking to 20-21 psi. What i dont understand is that i have my MBC all the way down and it stays at about 12 psi til around 5000 or 6000 rpms and then it spikes really fast all the way to 21 psi. I dont know why it spikes so high so fast so i need some ideas.

 

[Dsmkauai]

Thats boost creep bro. Do you have an adjustable wastegate arm by chance. Also are you sure you have your Mbc Hooked up correctly. Also if your not tryin to run high boost then there is no reason to have a Mbc until you have supporting mods that can support the boost. With just wg pressure you should see 12-14 psi which is plenty on stock fuel system.

 

[96talontso]

my MBC is hooked up the correct way, and once i get injectors and my AFPR in im turning up my boost. And i have a 255 walbro btw.

 

[bryanwheat]

What type of turbo, o2 housing, exhaust and boost controller are you running?

 

[96talontso]

MHI E3B16G Megan racing o2 housing and 3" Megan downpipe to 3" Thermal r&d (catless) <--- Yes i know that causes boost creep, but shouldnt be doubling. My MBC is perrin. Im ordering a NXS ebay MBC now cause im thinking its the MBC

 

[bryanwheat]

An easy way to test before buying anything is to take the boost controller out and run the hose directly from the j pipe to the wastegate. IF you do need a different boost controller stay away from those ebay controllers and get the dejon powerhouse controller which is 30 bucks.

 

[96talontso]

An easy way to test before buying anything is to take the boost controller out and run the hose directly from the j pipe to the wastegate. IF you do need a different boost controller stay away from those ebay controllers and get the dejon powerhouse controller which is 30 bucks.

Ive read nothing but rave reviews on the NXS as far as price and reliability

 

[krishansheanh]

what brand boost controller is it?