Nameless Performance BRZ Axleback Exhaust

[Sportsguy83]

Originally Posted by A5D5TRYR

For those that are running the 3" axleback, are you still running the stock 2.25" midpipe?
Even further, those that are running the 3" axleback and 2.5" OP/DP, still running the stock midpipe?

I only ask because on the Nameless site it talks about the 3" axleback being for those with plans of FI but if you are still running a 2.25" midpipe that doesn't really make a lot of sense to me since you'll still have the major restriction being the midpipe?

I have full 3" exhaust, axleback, midpipe and OP/DP

[vtmike]

Originally Posted by Noob4Life

Youll want to run the stock or 2.5" over/front pipe and mid pipe until you go fully go fi otherwise you'll loose too much back pressure and cause the car to be slower. The 3" Axleback on an NA engine is fine because you have the over and front pipe supplying the needed back pressure.

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I think nameless reasoning was less because of loss of hp but more to do with 3" pipe weights more than 2.5" pipe and didn't provide significant benefit compared to its weight gain on an na set up.

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[FR-S Matt]

Originally Posted by Sportsguy83

I have full 3" exhaust, axleback, midpipe and OP/DP

Did Jason fabricate your entire system or did you go another route for the midpipe and downpipe/overpipe?

[Sportsguy83]

Originally Posted by FR-S Matt

Did Jason fabricate your entire system or did you go another route for the midpipe and downpipe/overpipe?

I got their Axleback, they fabricated a 3" OP/DP for me, and I believe I got one of the test pieces they have used for mid-pipe, so that one is not brand new.

[Noob4Life]

So eveeyone is saying its okay to run a full 3" system on an NA motor? This is the first time ive evee heard that.

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[Sportsguy83]

Originally Posted by Noob4Life

So eveeyone is saying its okay to run a full 3" system on an NA motor? This is the first time ive evee heard that.

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I have a turbo, I don't think anyone is saying its perfectly fine to run it on an N/A car.

[FR-S Matt]

I'll run a 3" on NA for a bit before I go turbo. I aint skurrrrd!

[sierra]

Originally Posted by Noob4Life

So eveeyone is saying its okay to run a full 3" system on an NA motor? This is the first time ive evee heard that.

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3" is really only suitable for a turbo. On NA it's too loud and probably loses power. It certainly loses performance due to it's weight penalty over 2.5".

[FR-S Matt]

I'd like someone to prove that a 3" system loses power due to lack of back pressure. I don't think I've seen one yet besides the Nameless header test which yielded a ton of whp/tq last time I checked. I think maybe at the very low end there will be a loss. I mean, we're only talking about half an inch here... does it really affect it? I'm even researching it as I type this. Sound I don't care about, I'll have 2 resonators in the 3" setup I'd like with a header.

[FR-S Matt]

After doing more research, this is going to be dependent on the header that is ran N/A. As long as it can match the flow of the larger diameter piping it will be okay, but a lot of people are saying 2.5" keeps the velocity of the flow high.

I really think there isn't enough raw data on the FA20 engine with a 3" N/A with a good header like the Nameless one.

The possibility to lose power is there, but I think the Nameless header might have the flow to handle it.

[Noob4Life]

Okay this is what I was referring to when I posted my reply lol though it was being asked if we were running 3" on an NA motor not an FI. Its gonna be awhile until I got fi and I want more power now so im gonna be running a 2.5" over/front pipe and stock midpipe until I get my turbo or sc

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[A5D5TRYR]

I wasn't asking specifically about FI or NA, I was just curious if anyone running the 3" axleback was still running the stock 2.25" midpipe because I didn't see a midpipe of any sort on their website and it seemed a little odd to go to a 3" axleback (for FI or whatever) and leave the stock midpipe. @Sportsguy83 responded with what I was looking for by saying that he went full 3" for his and had parts that weren't openly for sale.

Does anyone know if they are planning on offering a midpipe replacement for those that are going FI?

[FR-S Matt]

Originally Posted by A5D5TRYR

I wasn't asking specifically about FI or NA, I was just curious if anyone running the 3" axleback was still running the stock 2.25" midpipe because I didn't see a midpipe of any sort on their website and it seemed a little odd to go to a 3" axleback (for FI or whatever) and leave the stock midpipe. @Sportsguy83 responded with what I was looking for by saying that he went full 3" for his and had parts that weren't openly for sale.

Does anyone know if they are planning on offering a midpipe replacement for those that are going FI?

Yes, they are working on it and Jason mentioned he wants to find a resonator that's not just one of their "off the shelf" types that's actually custom built for the midpipe. He was mainly looking at doing that with a 3" midpipe to match to the axleback so I am unsure if there is a plan for a 2.5" midpipe as well.

Currently, you use a gasket for the 3" axleback to mate the 2.25" stock midpipe. They're busy as hell trying to find time in between orders to do some R&D on the 3" system and 2.5" system and get the FR-S back to the dyno.

[Zgrinch]

Originally Posted by StOpNG0x

Thanks for the input.

What muffler size?

4"