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    Downpipe Noise Issue

    Only time i hear it is when i go uphill or accelerate when the road is leveled. The headers maybe 4 or 5 inches longer than the oem ones. I've literally looked into everything and I have no clue what it could be. I lifted the car and moved around under it.
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    Downpipe Noise Issue

    If im in Neutral or in park the noise isnt present. I can go all the way up to 5k rpms and no noise.
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    Downpipe Noise Issue

    Video of the noise. Any ideas??? https://vid.me/bqwX
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    Downpipe Noise Issue

    It just sounds like its stuttering. Like something is in the actual down pipe stuck. It'll go away if i let go of the pedal but as soon as i go uphill or level out and try accelerating the noise comes back.
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    Downpipe Noise Issue

    Would that cause the noise that the exhaust manifold is making?
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    Downpipe Noise Issue

    I installed a new cat at the time. Yes I cleared all the codes/monitors after I installed the parts.
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    Downpipe Noise Issue

    I installed a new 4-2-1 headers with a down pipe. The rest of the exhaust is an Apex cat-back. First week of having it, it was great and all. I added a resonator to help with the rice. Now after the 1st week I started getting a noise coming from the manifold area. I'm not sure if it's with...
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    CEL after catback install

    Thanks man. I got a friend that works at O'reilly he's gonna go ahead and buy me that MagnaFlow. Hopefully that solves the issue. Im still on stock air intake. Do you think that is affecting anything. not enough air going through the engine?
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    CEL after catback install

    I cleaned the vtec Solenoid, seafoamed my engine got my exhaust hangers re-welded to fit perfectly. Now two more issues continue. The catalytic converter is brand new i bought when i got the catback. But its showing symptoms of it being clogged. When I'm going uphill or downhill and accelerate...
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    CEL after catback install

    I still haven't figured out the "whoosh sound" But the leak is coming from the water pump I believe. Its somewhere behind and under the distributor. So i'm guessing its the water pump. The liquid that has been leaking has been clear, so I'm guessing its water. Regarding the whoosh sound when i...
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    CEL after catback install

    Alright guys, I just finish doing my oil change. And im popping vtec now. It goes up to 5k rpms in park. I'm seafoaming it later this weekend. I noticed two things from driving it around the neighborhood. My coolant is leaking from a hose near the distributor. Another thing is when I'm...
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    CEL after catback install

    Thanks for the heads up will do, ill update you guys after i get it done. Hopefully everything goes back to normal. Thanks for the advice again.
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    CEL after catback install

    Alright guys. I woke up today, and the code was gone. It still felt a little rough but this time it went passed 3k rpms. Either way Im gonna clean the solenoid and change the oil with the gasket this weekend. I probably have a cleaner somewhere in the garage, and i might as well seafoam my...
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    CEL after catback install

    Its a 4 cyl. By high i mean. I cleaned the dipstick and stuck it back in. and the oil level was probably half way up. I let my car cool down and i just checked it a couple minutes ago, it went back to normal. Its definitely not overfull. The solenoids are next the air compressor right? Is it...
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    CEL after catback install

    Vtec malfunction. You guys think its a vtec gasket?
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    CEL after catback install

    Last time I changed the oil was November. I haven't added any at all ever since then. The level is pretty high.
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    CEL after catback install

    Level*
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    CEL after catback install

    Just got the code read. P1259 guy at auto zone said it can many things... my oil label is super high.
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    CEL after catback install

    It won't go pass 4k anymore. I was probably thinking a vacuum hose leak or something. Maybe not enough air is getting through the exhaust. But I'm not sure.
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    CEL after catback install

    I was on my way to school today and the car felt really weird when driving. It felt rough. After I hit 4k rpm it threw a cel off. On the way to school I felt the loss of power and it still felt and sounded rough. If I hit 3k rpms the car would shake. So I was driving 50 to 60 at 2k rpms. I...
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    Header Mainfold Problem

    Thanks! I plan on installing it tonight after i go and buy some washers! Will post pictures after I'm done.
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    Header Mainfold Problem

    I dont think I understand. This is a picture of my current header manifold and the new one. The holes on the new manifold are big than the current header manifold. You're saying washers can be used so the new one can fit the engine?
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    Header Mainfold Problem

    Head Flange bolts. Sorry left that out.
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    Header Mainfold Problem

    I've tried looking on V6 Performance, and driveaccord, i also did a search on here. I wasn't able to find anything. I have a 99 ex coupe with a f23a1 engine. I had bought some headers and down pipe with a catback exhaust off a friend that had the same car. I tried installing it today but...
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    LATTEA MEET (atl, ga)

    Do these still go on?

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