Miata Turbo Shuts Off
#1
Miata Turbo Shuts Off
Hey everyone,
Hopefully I can get some help here. I recently finished installing a T25 on my 1999 1.8. It has an ebay manifold, with custom intercooler piping, and a custom downpipe. I am using a Flyin' Miata Voodoo Box for engine management. I tuned it following the instructions that came with the Voodoo Box.
The car runs great when it isn't in boost, however after hitting boost and letting off the gas, the rpms drop and sometimes the car cuts off and dies, other times, the rpms will drop and go back up and idle very high around 2k. After cutting off, the car will turn back on normally. My boost gauge is telling me I am hitting 6psi.
The only thing I could think it is, is when installing the downpipe, I accidently snapped one of the bolts off, so only four bolts are holding the downpipe on to the turbo. Could a small exhaust leak be the reason this is happening?
Please help!
Hopefully I can get some help here. I recently finished installing a T25 on my 1999 1.8. It has an ebay manifold, with custom intercooler piping, and a custom downpipe. I am using a Flyin' Miata Voodoo Box for engine management. I tuned it following the instructions that came with the Voodoo Box.
The car runs great when it isn't in boost, however after hitting boost and letting off the gas, the rpms drop and sometimes the car cuts off and dies, other times, the rpms will drop and go back up and idle very high around 2k. After cutting off, the car will turn back on normally. My boost gauge is telling me I am hitting 6psi.
The only thing I could think it is, is when installing the downpipe, I accidently snapped one of the bolts off, so only four bolts are holding the downpipe on to the turbo. Could a small exhaust leak be the reason this is happening?
Please help!
#14
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Your first diagram should work just fine. That's essentially how BEGI routes theirs, except with the BOV fipped. It's common to use that BOV flipped, as boost pressure helps it seal shut.