Lq9 popping under acceleration

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09-11-2016, 10:02 AM

#11

MikeGyver

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Everybody is stuck on the muffler. I am with Pat, let's hear it and then start posting theories.

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09-11-2016, 10:08 AM

#12

FFDP

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I went with misfires first or engine problems, but he said it runs great. Thats why I went to the exhaust.

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09-11-2016, 06:07 PM

#13

1FastBrick

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The flap masters do that. like there sucking air back in. I cut the hack flapmaster one on mine off and put a complete Magnaflow cat back and the issue went away.

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09-11-2016, 06:46 PM

#14

MikeGyver

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Quote:

Originally Posted by FFDP

I went with misfires first or engine problems, but he said it runs great. Thats why I went to the exhaust.

Yeah, I guess. Mine ran pretty bad (real bad) when it was popping from a broken outer valve spring.

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09-11-2016, 07:08 PM

#15

just rob

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Tried uploading video. Short under 60 sec. File is too big. What's the secret to making it small enough to load?

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09-11-2016, 11:34 PM

#16

just rob

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My droid records in mp4 format even trimmed and conpressed I can't upload a video.

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09-12-2016, 12:05 AM

#17

FFDP

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You have to use photobucket or youtube. Or similar sharing website.

You can't upload a video straight from your computer.

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09-12-2016, 11:13 PM

#18

just rob

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09-13-2016, 06:52 AM

#19

03sierraslt

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Umm, can you post a video of it accelerating or something under load? That video doesn't really give much to listen too. Like Mike mentioned above I have also seen weak valve springs cause all kinds of things. Not that its that but without hearing it I would just be guessing without any reason.

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10-03-2016, 08:36 PM

#20

just rob

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Cannot get the sound I hear to come through on video enough to be worth posting. Currently i have a 2 into 1 collector 3" back to a 4x9 magnaflow. I'm just going to cut it all off and do dual 3". What's the best sounding muffler for an lq9. I dont mind loud as long as it sounds good.. opinions please. Or even sound clips if you have them... no cats on mine not requires where I live.

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