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Old 03-10-2018, 04:18 PM   #29
Viper8
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Fortunately, even the though header flange wasn't completely flat, the gasket "squish" was sufficient to prevent any leaking. There also were no leaks at the overpipe to front pipe connection. However, there was a big leak at the annoying header to overpipe slip fit.

This last weekend, I made my third attempt to seal the joint. I removed the overpipe from the header, cleaned the connections, and tried using the permatex copper high-temp rtv sealant this time. The below videos are me thinking I finally sealed it - and then realizing there was still a small leak.

[ame="https://www.youtube.com/watch?v=uYA0TWSAOXs"]IMG 1867 - YouTube[/ame]

[ame="https://www.youtube.com/watch?v=NFOloYLdXJo"]IMG 1868 - YouTube[/ame]

I tried plugging the top leak with Permatex Muffler/Tailpipe sealer, but it didn't work. I've officially given up for the time being on trying to fix the leak as it is pretty small. My next attempt will likely be with a stepped exhaust clamp like this:

http://www.jegs.com/i/Dynomax/289/33...SABEgJy9PD_BwE
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Old 03-14-2018, 02:32 AM   #30
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Prior to buying a catless header, I had some concerns that it would be too loud. Using the free app Decibel X, I recorded the following from normal freeway driving (compare the averages - about 1 dB difference):

While the header has a better note, it's not noticeably louder
(Left is stock, Right is OFH)
Look at the average values (87.9 vs 88.7) - about a 1dB increase. My ear can't tell a difference.
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Last edited by Viper8; 08-25-2018 at 10:08 PM.
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Old 03-30-2018, 11:41 PM   #31
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Finally fixed the annoying exhaust leak with the OFH3 header/overpipe slip fit. I bought this clamp from summit racing, cut it to fit around the joint, applied permatex copper sealant, and tightened the clamp. After letting it dry, I did my hair dryer pressure test on the exhaust system, and the leak had finally been fixed (there is still a roughly pin prick size very small leak, but not enough of one to bat an eye at). Very happy to be done battling this thing. Next will be a header wrap.
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Old 04-06-2018, 03:58 PM   #32
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It seems there's a handful of polarizing debates in the twin community:
FRS vs BRZ
Naturally Aspirated vs Boosted
OpenFlash vs ecutek
Drop-in filter vs Full intake swap
and Header wrap vs none (or ceramic coating) - to name a few

I decided to wrap my OFH for the primary reason of reducing engine compartment temps (especially near the oil pan). I used one 2"x50' roll of DEI titanium wrap.

"Up" is towards the front of the car.
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Old 04-06-2018, 05:16 PM   #33
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The next item of business was to do something about the FRS's rear end. The trunk just looks like it's missing something without a spoiler. I found one I liked on ebay from ikonmotorsports that came painted for $140. I also bought some 2-sided trim tape to install the spoiler (didn't want to drill through the trunk). Finish was great and the color matched well. Fit was pretty close - good for the price. I prepped the surface using a cleaner/wax remover and clay bar. During the installation I did try to improve the fit slightly using my wife's blow dryer and clamps which I think helped marginally. Overall I'm very happy with the spoiler and would buy again.
Wheels and wing look awesome! Don't change anything else.
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Old 08-30-2018, 10:26 PM   #34
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Just got back from my deployment and am excited to start where I'd left off!

I've started doing a lot of reading on OFT tweaking/tuning since returning and seeing the new v4 OTS tunes. Many thanks primarily to @steve99 and @Kodename47 for compiling a massive amount of information for OFT newbies like me. After reading up on datalogging, I performed several 3rd gear pulls. One such example is below:

https://datazap.me/u/viper8/ofh-v1?log=0&data=1-11

(Forgot to log IAM on this pull, will be on future ones)

As you can see, a fair amount of timing is being pulled above 6600rpm. This is on the OpenFlash OTS v1.00 Stage 2OFH on 91 octane. Since this gas has been sitting in the car since before I deployed, I'll wait till I refill, datalog again and reassess. If that doesn't help, I'll probably try the new Stg-2-Plus-v4.03-LC-FSS-ZA1JA01C tune. If still necessary after that I'll try some different brand fuels and then begin modifying tunes.
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Old 09-03-2018, 09:58 PM   #35
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After much deliberation, I decided to also buy an oil cooler. I had tried convincing myself that I could get by just using a heavier weight oil (0W-30), but the truth is it will be worth the investment in engine life if I continue to track the car. This video definitely played a part in my decision...

[ame="https://www.youtube.com/watch?v=cDfFJ5s6IDg"]IMG 1867 - YouTube[/ame]
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Old 09-04-2018, 12:41 AM   #36
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Have you looked at this for an Oil Cooler. OEM+ Cooler

Not trying to talk you out of it but if you run on a smaller track or something that's a bit more technical, a bit heavier weight oil, this cooler and a customized tune to kick the cooling fans on sooner might be enough. Not the same cooling performance but it might be enough. 250F is about the max you want to see for Oil before cool down. You can use OFT to monitor and set an alarm when you hit a certain threshold. I had an oil cooler before but in winter it will take longer for oil to get up to temp plus you run a higher risk to leaks at the fittings IMO vs the OEM+ style one. Also they are alot easier to install and cheaper. BTW Keep up the posts I enjoy reading them.

BTW don't waste your $$$ on an Intake. Most require a MAF re-scale and provide very little performance gains. Save the money. Get a nice Axle back or something that will make you smile more at WOT
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RCE T2's, SPC LCAs -4/2.6 camber
JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85
RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid
ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's
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Old 09-05-2018, 10:00 PM   #37
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@jflogerzi thanks for the good info - I haven't heard of that oil cooler. For better or worse I already went with the Mishimoto cooler w/ thermostat and am in the middle of that install as I write this. I'm still going to take your advice and try the OFT warning to monitor oil temps for my next track day. Also, sounds like sage advice on the intake. Everything I've seen agrees with you in that it just isn't worth it.

Speaking of axle backs, how do you like your nameless, and how loud is it?
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Old 09-05-2018, 10:10 PM   #38
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Per the above, I did buy the Mishimoto oil cooler with thermostat:
https://www.mishimoto.com/subaru-brz...er-kit-13.html
Packaging, fit, and finish were good. Installation details to follow over the next few days...
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Old 09-05-2018, 10:40 PM   #39
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@jflogerzi thanks for the good info - I haven't heard of that oil cooler. For better or worse I already went with the Mishimoto cooler w/ thermostat and am in the middle of that install as I write this. I'm still going to take your advice and try the OFT warning to monitor oil temps for my next track day. Also, sounds like sage advice on the intake. Everything I've seen agrees with you in that it just isn't worth it.

Speaking of axle backs, how do you like your nameless, and how loud is it?
it's sounds really good windows down. Windows up on flat road its fine and fairly tame under light throttle. Under WOT with Windows up it can be a bit rough. The worst is under highway speeds going up hill. Once in a while it's doable but if I had to deal with on a daily commute not sure I could. I am working on sound clips.
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JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85
RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid
ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's
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Old 09-07-2018, 10:43 PM   #40
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Cool. If you get some sound clips send them over!
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Old 09-07-2018, 10:48 PM   #41
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The oil cooler kit came with everything needed, and the install was mostly... straightforward. Removing the bumper was much easier and quicker than I expected.
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Old 09-07-2018, 11:02 PM   #42
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While I had the bumper off I got side tracked and decided to do the snorkel mod @GrimmSpeed found to add 1-2whp:
https://www.ft86club.com/forums/showthread.php?t=56341
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