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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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05-12-2022, 08:16 PM | #1 |
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Advice on installing JDL 4 2 1
I’m relatively new to the platform so I’d appreciate any advice :P
This is the guide I plan on using as a reference: https://www.partsdocs.com/Guide/How+...+Subaru+BRZ/39 -renting the o2 sensor from autozone -ordered the Grimmspeed gaskets for the header side. Will be reusing stock ones for the FP side or source one locally if available at the dealer -my understanding is that I need to bang on the skid plate a little bit to conform to the header shape -my torque wrench recently crapped out. Any recommendation on one? -do I need bolts or can I just reuse the stock ones ? Anything else I’m missing? |
05-12-2022, 09:10 PM | #2 |
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Do you have a way to tune the car?
If not then don't install till you do have a way and a base tune. |
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05-12-2022, 09:23 PM | #3 |
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Should have told me when you picked up the header; I am always happy to help with installs!
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05-12-2022, 10:28 PM | #4 |
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That is a pretty comprehensive write up, you should be fine.
I didn't need to massage the skid plate for my install YMMV. From memory one or two of the nuts where the header meets the heads won't be accessible easily with a torque wrench. Getting the exact torque isn't critical though. I was able to re-use existing hardware with my installation but I live somewhere that never snows so again YMMV. As mentioned above you will need a tune with this header. I haven't seen an OFT optimised tune floating around so a reputable Ecutek tuner will be the way to go. If you are getting an E-tune make sure your tuner has tuned a car with this header before as the cam timing needed for it to run well is unique to this header.
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05-13-2022, 10:30 AM | #5 | |
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Quote:
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05-13-2022, 10:35 AM | #6 |
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05-13-2022, 04:52 PM | #7 | |||
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Quote:
Quote:
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ah. Yeah..just wanted to make sure the nuts didn't back out lol. QQ: Do people leave their OBD2 Ecutek bluetooth adapter plugged in? or take it out after using it? |
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05-15-2022, 10:24 PM | #8 |
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It wont. Totally different header.
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05-15-2022, 10:27 PM | #9 |
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I do. I got used to monitoring my trims etc so i use the app and Bluetooth functions.
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05-15-2022, 10:57 PM | #10 | |
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So I got the header installed: Got the base map loaded on and sent Zach the first datalog. I was able to torque down all the nuts except for the one on the passenger side, mostly because I couldn’t quite get the socket fitted. Ended up just using a ratcheting wrench to tighten it down. Let me know if anyone has a recommendation on fitting a socket somehow so I can use my torque wrench to torque it down. |
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05-16-2022, 12:57 AM | #11 | |
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I was able to get a deep well 14mm and 6"(?) 3/8" extension on. First the socket on the nut, then slide the extension on between the runners. |
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05-16-2022, 06:40 AM | #12 | |
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05-16-2022, 07:34 AM | #13 |
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Assuming a 3/8" torque wrench, use a 3/8" to 1/4" adapter and you can sneak in a 1/4" extension between the runners, then put a 1/4" 14mm from the top.
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05-18-2022, 09:45 PM | #14 |
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I appreciate the help everyone !! I was able to properly torque it down.
I finished tuning with Zach and the car feels amazing. However, I haven’t modified the skid plate so I do hear a rattle sometimes. And I may or may not look for a catback as the car doesn’t sound that great with just the headers lol |
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