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


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Old 05-28-2019, 02:53 PM   #29
Vital
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Originally Posted by Will BRZ View Post
Wait seriously? Iíve been told otherwise. I will be running a tune to get rid of the check engine light. I know someone who can pass me, but Iíd rather not go that rout.
Yes, it should just should be a safety and an OBDII test.
https://www.dps.texas.gov/rsd/vi/con...ionTesting.htm
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Old 05-28-2019, 03:20 PM   #30
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Yes, it should just should be a safety and an OBDII test.
https://www.dps.texas.gov/rsd/vi/con...ionTesting.htm
Damn thatís really good to know. Thanks!
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Old 05-28-2019, 04:12 PM   #31
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i have the catless UEL gruppe-s and the smell is pretty minimal. sometimes i have to turn the recirculating air on if i am in stop and go with the windows up but thats about it. non issue with the windows down and sitting at idle
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Old 05-28-2019, 04:54 PM   #32
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I ran catless Tomei UEL's on my dd FRS, with a hooker catless/resonated front pipe, for about 2 years and over 40k miles. I ran E85 most of the time and didn't notice any smells when sitting inside the car. I did notice the smell of E85 whenever I did a cold start and stood outside of the car. I also didn't notice any funny smells when I was on 91.

With a tune and the UEL headers, the torque dip was eliminated and the car was much more fun to drive. However, I hated the drone so much that I put the stock exhaust back on. I couldn't have a conversation in the car without yelling, lol. There are a few cat-back exhaust options that will let you run a catless setup without the drone, like the ARK Grip, Corsa, Invidia Q300.

I doubt that you'll pass emissions testing when running a catless setup w/regular pump gas, but you might be able to pass with E85.

-Sam
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Old 05-28-2019, 07:52 PM   #33
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There are a few cat-back exhaust options that will let you run a catless setup without the drone, like the ARK Grip, Corsa, Invidia Q300.

-Sam
I believe the Ark Grip is discontinued now, isnít it?
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Old 05-28-2019, 08:45 PM   #34
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I believe the Ark Grip is discontinued now, isn’t it?
We don't sell it, but I don't see anything about it being discontinued on Ark's website.

Says that it's in stock.
https://arkperformance.com/index.php...product_id=137

-Sam
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Old 05-28-2019, 09:48 PM   #35
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Open flash header/e85. Smells like a gin mill sometimes
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Old 05-28-2019, 10:06 PM   #36
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Originally Posted by eastendraceshop View Post
I ran catless Tomei UEL's on my dd FRS, with a hooker catless/resonated front pipe, for about 2 years and over 40k miles. I ran E85 most of the time and didn't notice any smells when sitting inside the car. I did notice the smell of E85 whenever I did a cold start and stood outside of the car. I also didn't notice any funny smells when I was on 91.

With a tune and the UEL headers, the torque dip was eliminated and the car was much more fun to drive. However, I hated the drone so much that I put the stock exhaust back on. I couldn't have a conversation in the car without yelling, lol. There are a few cat-back exhaust options that will let you run a catless setup without the drone, like the ARK Grip, Corsa, Invidia Q300.

I doubt that you'll pass emissions testing when running a catless setup w/regular pump gas, but you might be able to pass with E85.

-Sam
Hey thanks for your input. Yeah thatís why now Iím thinking about just doing catless headers, front pipe and a tune and keep stock OP and exhaust. Iíll run this for a while then just kinda feel it out when selecting a lightweight, aftermarket catback. Iím considering the Invidia R400 or the new Invidia N2 as I havenít seen much of them with catless headers and it does have a nice note to it. Like I said, Iíll feel it out. Everyone has different definitions of loud and annoying lol

That being said, what style front pipe would be best to pair with the catless headers? Dual resonators, cat and resonator, or just a high flow cat? Iím kinda leaning towards something like the Tomei catless headers with the JDL ďUltra QuietĒ front pipe. I think this would help contain the smell and drone and would also give me a nice, deep tone.

If anyone has experience with anything similar, please share! Thanks
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Old 05-28-2019, 10:31 PM   #37
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I wonder what happens when one drives through other state with different rules/regulations and is checked on the road by some traffic cop ..
usually nothing happens. no one cares as long as you can prove you are not a resident of California and you are not abusing your vehicle registration rights by being a visitor.

people that register their cars out of state either 1) want to do whatever they want with their car, or 2) don't want to pay taxes.

most of the time, state police and local law enforcement don't care about federal law until it is convenient for them. lack of catalytic converter is not an issue unless the officer wants to brush up on federal laws and how to litigate them in a local court, only to realize the fine is paid to the federal government and not to local jurisdictions...
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Old 05-28-2019, 10:33 PM   #38
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My question is if the pros to having catless headers outweigh the cons (smell, emissions etc.)
Why not have both?

Get whatever header you want.
Keep stock front pipe.

The stock front pipe isn't going to gain you some magical 5 or 10 horsepower, you can keep one cat and also keep the exhaust notes down.

-alex
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Old 05-28-2019, 10:42 PM   #39
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Try out a rotary powered car with premix, catless car will smell like perfume after that
Same with any other two stroke equivalent motor that burns oil by design. Stinky.
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Old 05-28-2019, 10:53 PM   #40
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I have catless headers and stock front pipe. I only smell it when I'm in a garage. To warm up my car I usually back out halfway out so the garage doesnt stink up too bad.
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Old 05-29-2019, 01:06 AM   #41
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I ran a JDL UEL catless header and a Nameless high flow catted front pipe for 2 years of daily driving. With the windows up i never noticed a smell. Windows down there was very rarely some smell but only when the wind was blowing the right way and even then it wasn't a strong smell.

From a driving point of view i have gone back to stock exhaust and tune recently. I miss the extra poke they gave every day. I would say go catless header and a decent high flow catted front pipe for good gains and minimal smell.
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Old 05-29-2019, 01:43 AM   #42
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Cats are awesome. Run them always.
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