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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 03-07-2015, 03:07 PM   #43
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Originally Posted by FR-S Todd 86 Mafia View Post
How do you like the Skunk2 headers? Performance and sound wise? The alpha or ultra series? Im in the process of installing mine as we speak just checking the forum while i take a break and cant get any further until the morning.....
http://www.ft86club.com/forums/showt...ghlight=skunk2
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Old 03-07-2015, 04:04 PM   #44
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Are torque specs specific to your car? If so where can i find mine? If not what are the general torque specs for the header area? i want to change my headers but do not know what are the bolt torque specs.....
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Old 03-08-2015, 07:09 PM   #45
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Are torque specs specific to your car? If so where can i find mine? If not what are the general torque specs for the header area? i want to change my headers but do not know what are the bolt torque specs.....

see here
http://www.borla.com/17284.pdf

22 foot pounds header/engine bolts
26 foot pounds header/overpipe bolts

added some oil cooler info as well to first post

Last edited by steve99; 03-08-2015 at 07:36 PM.
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Old 03-08-2015, 07:48 PM   #46
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If I get a test pipe, what does that exactly replace and will I most likely fail the NYC emissions test with it? Debating whether to get that to go with my new exhaust system, but if its going to fail me on the emissions test, then it may not be worth the trouble.
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Old 03-08-2015, 08:14 PM   #47
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If I get a test pipe, what does that exactly replace and will I most likely fail the NYC emissions test with it? Debating whether to get that to go with my new exhaust system, but if its going to fail me on the emissions test, then it may not be worth the trouble.
I'm not sure what a "test pipe" is ??

Generally if you remove one or more of the two catalytic converters (cats) in the exhaust you may fail testing depending on how strict the testing is in your area.

If your referring to a "track pipe" or a muffler delete then that should not effect emissions test but you may fail on noise output.

I'm in OZ so not up with tests in USA.
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Old 03-13-2015, 12:38 AM   #48
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added a bit more info on headers and oil coolers to first post.
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Old 03-16-2015, 04:37 PM   #49
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COnsdiering running the Ultimate racing 2.75 inch overpipe and resonated catless front pipe combo with the skunk2 header and perrin 2.5 ich resonated combo.

THe 2.75 inch piping work with the 2.5 inch outlet on the header and inlet on the perrin work without any issues?

THoughts on any issues with running this setup?
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Old 03-23-2015, 10:31 PM   #50
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@steve99, Awesome post, very informative, thank you. Helps simplify the decision about where to start and get the best bang for your buck.
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Old 03-25-2015, 06:06 PM   #51
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added a couple of link to intke manifold oil starvation high rpm ect
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Old 04-06-2015, 11:02 AM   #52
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Anyone know that the TRD intake need to do the maf-scaling?

Thanks.
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Old 04-06-2015, 05:26 PM   #53
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Anyone know that the TRD intake need to do the maf-scaling?

Thanks.
trd intake should be fine maf scaling wise
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Old 04-15-2015, 04:08 AM   #54
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Garage
"If you want more than about 35-40 wheel horsepower gain then your going to need to go Forced Induction FI either Turbo or Supercharger, just skip NA mods "
Hey, I've been doing some research/lurking here for the past month and I have zero experience with modding a car. I would just like to clarify if this statement means that you can go from a completely stock frs/brz and add a turbo kit onto it without any other modifications? I tried to use the search function, but I couldn't find anything that I was looking for(may have been incorrectly searching). Thanks!
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Old 04-15-2015, 06:01 AM   #55
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"If you want more than about 35-40 wheel horsepower gain then your going to need to go Forced Induction FI either Turbo or Supercharger, just skip NA mods "
Hey, I've been doing some research/lurking here for the past month and I have zero experience with modding a car. I would just like to clarify if this statement means that you can go from a completely stock frs/brz and add a turbo kit onto it without any other modifications? I tried to use the search function, but I couldn't find anything that I was looking for(may have been incorrectly searching). Thanks!
This thread is about naturally aspirated basic mods.

Their is a forced induction thread that should provide answers.
But quick and dirty answer

Yes you can bolt on a supercharger or turbocharger kit to a stock frs\brz motor without decompressing or other internal engine mods

On petrol you will be limited to about 10 psi boost due to limitations of stock fuel injection system. arround 280 wheel hp

You might also want to budget for a clutch and an oil cooler and a bigger radiator if you want to drive it hard or track it.

Without clutch you might want to stick to about 7 or so psi boost arround 240 wheel hp and you might get away without the radiator , but an oil cooler is still needed, unless you live in cold climate and you only drive hard for very short periods

stock cars are about 170 wheel hp

You can break stock cars by driving them like a d1ck, you will break a boosted one faster if you drive in that manner with no respect for the extra mechanical stresses and heat loading you are putting on the car.
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Old 04-22-2015, 05:42 PM   #56
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I love this thread!

Thanks to the information, here, I am now running Open Flash's UEL headers and an E85 Stage 2 tune on my 2015 BRZ. And I have the glove box outlet cap in the sound tube.

I'm no mechanic--i've never done anything more complicated than brakes on any of my previous cars. But I had no trouble installing the header and flashing the tune in my driveway.

The car I bought was a fun little car. Now, with the investment of about $1000 and a Saturday of work, I have something that feels like a real sports car! I know it's still not actually a fast car but it feels dramatically faster. I don't have access to a dyno, but I can easily believe the changes have added at least 10% more power, and mostly in the 4-5000 rpm range which make daily driving so much more fun!

Thanks for the great information.
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