Overboosting

[owenhunt07]

So I have a 2012 mazdaspeed 3 and I have an overboosting issues. To give some context I bought it and the guy before me was running a tune that was pushing 27psi so I reflashed it with a cobb stage 1 tune and it was hitting 18 psi fine no issues. I also had a MAP code so I replaced that and then I also bought a new tune and my tuner said that the MAP sensor was pretty much close to oem. So I bought a grimmspeed boost controller and installed that, then I bought a new turbo, cause I needed one, and neither of those fixed the overboost. So I'm just wondering if anyone else has had this happen before or if anyone would know what to do next.

Thanks

 

[brandonf]

so you were hitting 27 psi on a guessing non-stock turbo, k04 would throw fire at 27psi... and then flashed a map at 18psi, but after upgrading the turbo/ebcs, it's overboosting? I would double check the routing of the ebcs.

 

[owenhunt07]

so you were hitting 27 psi on a guessing non-stock turbo, k04 would throw fire at 27psi... and then flashed a map at 18psi, but after upgrading the turbo/ebcs, it's overboosting? I would double check the routing of the ebcs.

yeah it was a cst4 but the turbine has some play so I replaced it. But it started over boosting after changing my MAP sensor