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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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06-14-2018, 09:55 AM | #1 |
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Louder Engine Noise while Driving
Hello fourms,
I wanted to get your opinion on my engine sound this morning I experienced. Please take a listen and wanted your opinion.* Normally my engine and acceleration is much quieter. Only change was the header wrap was removed in the past week and engine is much louder. Fluids are good and no leaks. My guess is the Headers without the wrap make it louder since there is more exposed radiant heat. Should I be concerned?* Only thing I tested was flashing my OFT tunes from current v4.02 to stock. Loud sounds still exist. Video uses v4.02 and keeps engine quieter.* Did you hear any of these experiences?* Current performance mods: OFT v4.02 Stage 2+ Grams Throttle Body Perrin Cold Air Intake Perrin Crank/Alternator/Water pulleys Cusco Oil Cooler Perrin Radiator Hoses PLM UEL noncatted headers SRS overpipe/midpipe reasonated Perrin Catback Exhaust https://cloud.tapatalk.com/s/5b227331..._094347024.mp4 Code:
https://youtu.be/Vqhi0h5PulM Last edited by DeltaEcho; 06-14-2018 at 10:17 AM. Reason: Added YouTube video |
06-14-2018, 12:42 PM | #2 | |
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humfrz |
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06-14-2018, 06:10 PM | #3 |
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Mods please close fourms.
Found the culprit. Bad gasket between overpipe and headers Sent from my G8142 using Tapatalk |
06-14-2018, 07:14 PM | #4 | |
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OFT v4.02 Stage 2+ Grams Throttle Body Perrin Cold Air Intake Perrin Crank/Alternator/Water pulleys Cusco Oil Cooler Perrin Radiator Hoses PLM UEL noncatted headers SRS overpipe/midpipe reasonated Perrin Catback Exhaust" "For the want of a nail, a horse lost a shoe ….." humfrz |
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06-14-2018, 10:53 PM | #5 | |
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Next time if you hear a loud exhaust noise or what sounds like a leak you can confirm it by datalogging with the OFT (as long as your not running e85) and looking for high LTFT numbers (5-10 percent). If you have high long term fuel trims then you likely have intake or exhaust leak.
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