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L99 popping

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Old Jun 28, 2019 | 11:49 PM
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Default L99 popping

I have a l99 swapped on a 04 Silverado 4 door, been running perfect and out of know where started to pop while ime driving, mainly in the hwy, only once on street. It will pop and bog down bad, won’t let me give it gas and then shuts off, I turn it back on and works normal, does it every know and then but more when I’m wot, any reason why it could be?
motor is heads, cam, tbss intake, 4l80 on a triple disk 3600 turbo stall.
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Old Jun 29, 2019 | 12:01 AM
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Sounds like severe knock from detonation to me
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Old Jun 29, 2019 | 12:22 AM
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Originally Posted by MY_2K_Z
Sounds like severe knock from detonation to me
Just tried it out right now driving normal, did it twice once I hit 80mph
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Old Jun 29, 2019 | 01:06 AM
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Sounds like low fuel pressure.
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Old Jun 29, 2019 | 01:08 PM
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That’s the a/f at idle seams a little lean
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