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Old Mar 14, 2018, 03:16 PM
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Originally Posted by 2006EvoIXer
Did rod crack from too much torque when boost spijed to 35 psi? And then hung on until next day?
good point ! Damage was already done, what kind of boost control?
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Old Mar 14, 2018, 03:16 PM
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80% sounds about right for your power level and injector size (and no fuel pump rewire)

Originally Posted by Big_Mike1
After he was done tuning he told me the a/f shouldn't drop below 11.2 but if it does to let off lol. said my injector duty cycle was at 80% which was odd
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Old Mar 14, 2018, 03:16 PM
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Originally Posted by 2006EvoIXer
Did rod crack from too much torque when boost spijed to 35 psi? And then hung on until next day?
the boost spiked and cut off at 4k then when we traced it down to why it spiked it was fine and he continued to do pulls. Drove the car off it felt good did 2 pulls parked it for an hour left my house went to do a pull started misfiring new plugs went in the next day and adjustment to the tune which lead to this
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Old Mar 14, 2018, 03:17 PM
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Originally Posted by ctfpevoVIII


good point ! Damage was already done, what kind of boost control?
grimmspeed 3 port ebcs
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Old Mar 14, 2018, 03:18 PM
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Originally Posted by ctfpevoVIII


11.2 is fairly safe and even if it went a little leaner 11.5-11.8 this should of never have happened, and 80 % inj duty cycle is fine. Is he running a lot of timing? This is on pump 93 ?
E83. 80% IDC on 1220cc is about right on E85. 93 would be less IDC
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Old Mar 14, 2018, 03:19 PM
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Originally Posted by ctfpevoVIII


11.2 is fairly safe and even if it went a little leaner 11.5-11.8 this should of never have happened, and 80 % inj duty cycle is fine. Is he running a lot of timing? This is on pump 93 ?
e83 idk how much timing is on the map
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Old Mar 14, 2018, 03:20 PM
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Originally Posted by Big_Mike1
grimmspeed 3 port ebcs
thats what I run, kind of confused why it would spike to 35 psi. Before being tuned did you perform boost leak test?
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Old Mar 14, 2018, 03:21 PM
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Sorry, but he's trying to protect himself when he saw that spark plug.

Originally Posted by Big_Mike1
I was just hoping that what he was telling me was the truth at the time welp.
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Old Mar 14, 2018, 03:21 PM
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Originally Posted by ctfpevoVIII


thats what I run, kind of confused why it would spike to 35 psi. Before being tuned did you perform boost leak test?
the turbo line was on the breather nipple and the breather line was on the turbo nipple install error
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Old Mar 14, 2018, 03:21 PM
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Originally Posted by 2006EvoIXer
Did rod crack from too much torque when boost spijed to 35 psi? And then hung on until next day?
The 35psi spike probably hurt it.

Originally Posted by 2006EvoIXer
What are the odds that a spark plug tip bounces off the piston at an angle to go through one of tge exhaust valve opening, stay suspended in the exhaust port in head, exhaust manifold, turb hot side, down pipe, and out exhaust?
I wonder if it even made it out the combustion chamber.
He probably over wrote the bad tune to hide his mistake on 14th. This shouldn't have happened.
It happens more often than you think. It usually causes damage on it's way out though. Also, the ground strap erosion pictured is not a piece breaking off, that is heat eroding/melting it away. So you're not getting one big piece that has to find its way out.

This shop should not be getting anymore of your business, OP. Something is not right here.
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Old Mar 14, 2018, 03:23 PM
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Originally Posted by Big_Mike1
e83 idk how much timing is on the map
sorry totally missed the e83 listed in your first post, but 11.2 is even safer on e83/e85 as some will tune to 11.8- 12.0 no issues. I’m sure since your running e83 he has some timing in there.
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Old Mar 14, 2018, 03:27 PM
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Originally Posted by Big_Mike1
the turbo line was on the breather nipple and the breather line was on the turbo nipple install error
did the tuner hook it up this way? If so he should man up cause he just costed you a engine apparently if that spike cause this destructive damage.
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Old Mar 14, 2018, 03:27 PM
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My guess is he used wastegate duty cycle table from a big turbo. The stock turbo spools so fast that it overshot to the moon before he adjusted the table to make it more sensitive.

Originally Posted by ctfpevoVIII


thats what I run, kind of confused why it would spike to 35 psi. Before being tuned did you perform boost leak test?
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Old Mar 14, 2018, 03:33 PM
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So at this point, find another shop to build your engine. Inspect cylinder 2 exhaust ports in head and turbo volute and exhaust turbine for damage. Anything else?

Originally Posted by letsgetthisdone
It happens more often than you think. It usually causes damage on it's way out though. Also, the ground strap erosion pictured is not a piece breaking off, that is heat eroding/melting it away. So you're not getting one big piece that has to find its way out.

This shop should not be getting anymore of your business, OP. Something is not right here.
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Old Mar 14, 2018, 03:36 PM
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Originally Posted by 2006EvoIXer
So at this point, find another shop to build your engine. Inspect cylinder 2 exhaust ports in head and turbo volute and exhaust turbine for damage. Anything else?
The only thing I could do is pray that the head is fine but I won't know until the head is off the piston is no where to be found either in number 2. the turbo feels fine the turbine still spins freely with no shaft play
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