High RPM Shutter

[H4ck3d4l1f3]

So first off stock redtop, 10psi, exhaust, frontmount, walbro 255,

When I get on it and my rpm rise to about 4-5k my motor shutters and sounds like its missing. Like it instantly has noo power at all. I replaced my fuel filter. What should i try next?

[Mr.s13r]

what kind of boost controller are you using? U might be running lean...that what happen to mine when i try to run 13lbs on stock turbo, then i just dial it down to 12lbs something and didnt happen anymore. But then you only running 10lbs

[H4ck3d4l1f3]

its a perrin one.

It happened before when i was at 7psi too though.

[GSXRJJordan]

Bad coilpack, wiring problems, loose MAF wire - there's TONS of reasons for this to happen... sadly, they're really hard to troubleshoot. Search around and make a list of all the things to check - eventually you'll find it.