How to get that boxer rumble?

[ichitaka05]

Originally Posted by Snoopyalien24

Exactly how much HP can one lose by changing the EL headers to UEL? I mean your gonna pay to get less literally, but how much less?

We don't know w this engine. Cuz FA20 is different than EJ20/25, so gotta wait to see when aftermarket companies make UEL & EL headers

[Snoopyalien24]

Originally Posted by ichitaka05

We don't know w this engine. Cuz FA20 is different than EJ20/25, so gotta wait to see when aftermarket companies make UEL & EL headers

Oh yeah true that. I guess I got too excited and forgot no one really has worked on these new motors, well aside from tuning companies but they cant release info yet. Lol we shall wait sum more but thanks Ichi, maybe you can bolt on (would be interesting if one could) your EUL to your future BRZ/FRS!

Nah i keed, warranty first

[SpeedR]

Originally Posted by ryude

Would it be possible to make the same horsepower, but more torque with the unequal length headers?

Not really less efficient is always less power in the long run.
HP is only TQ over time.

[ryude]

Originally Posted by SpeedR

Not really less efficient is always less power in the long run.
HP is only TQ over time.

I meant torque lower in the rev range. Instead of peak torque at 6000, maybe it would be 5000?

[serialk11r]

With a turbo motor I think it matters less since the intake pressure is going to be greater than exhaust pressure, but I can't see how UEL headers would make more torque than a well designed EL header...different VE between cylinders would cause some problems. Maybe an EL that's too short would experience some bad exhaust pulse interference effects at lower rpm.

[old greg]

Originally Posted by Homemade WRX

All these guys talking about running an UEL for an excuse for broader tq curve by having unbalanced tunes of half the engine, why is there no mention of doing it properly via stepped primaries and tuned tri-y manifold?

Huh? I'm the only guy that mentioned anything of the sort, and I never said that was a valid reason to use them. Mr.Jay said it was "sound vs. performance". I merely made the point that while there would be a loss of peak hp potential, UELs do tend to produce a slightly broader tq curve, so it isn't necessarily a total loss in the performance department if that's what you're looking for anyway.

Originally Posted by serialk11r

I can't see how UEL headers would make more torque than a well designed EL header.

Peak torque? it wouldnt. Torque at some arbitrary rpm is a different story.

[JonnyFD3S]

Sounds like a boxer rumble to me....
FYI its confirmed there will be a turbocharged variant of this platform. Subaru is doing development on a low compression engine version and released at TAS a 1.8 turbo version of the BRZ engine. Its not surprising, the transmission should support 300whp of abuse. Sound/Power doesnt matter...this car makes 200hp at the crank Unequal vs Equal length in relevance to power isn't going to be significant no matter which way you cut it. Personally.. if I'm going to do heavy modifications, I'd go unequal length. By the judge of this video..its been done.

[Mr.Jay]

Originally Posted by JonnyFD3S

Sounds like a boxer rumble to me....
FYI its confirmed there will be a turbocharged variant of this platform. Subaru is doing development on a low compression engine version and released at TAS a 1.8 turbo version of the BRZ engine. Its not surprising, the transmission should support 300whp of abuse. Sound/Power doesnt matter...this car makes 200hp at the crank Unequal vs Equal length in relevance to power isn't going to be significant no matter which way you cut it. Personally.. if I'm going to do heavy modifications, I'd go unequal length. By the judge of this video..its been done.

Sorry but you are wrong

the 1.8T is for the new WRX and STI. Subaru themselves said they don't plan a turbo version and yes there is a turbo FRS and BRZ out there but they are powered by ej257 engines

[Dimman]

Originally Posted by Mr.Jay

Sorry but you are wrong

the 1.8T is for the new WRX and STI. Subaru themselves said they don't plan a turbo version and yes there is a turbo FRS and BRZ out there but they are powered by ej257 engines

Also, I thought they were showing a 1.6T.

[Mr.Jay]

Originally Posted by Dimman

Also, I thought they were showing a 1.6T.

opps thats my mistake

it was a 1.6T (new WRC regulations I do believe)

[catharsis]

Originally Posted by JonnyFD3S

Sounds like a boxer rumble to me....
FYI its confirmed there will be a turbocharged variant of this platform. Subaru is doing development on a low compression engine version and released at TAS a 1.8 turbo version of the BRZ engine. Its not surprising, the transmission should support 300whp of abuse. Sound/Power doesnt matter...this car makes 200hp at the crank Unequal vs Equal length in relevance to power isn't going to be significant no matter which way you cut it. Personally.. if I'm going to do heavy modifications, I'd go unequal length. By the judge of this video..its been done.

There is no turbo charged variant coming out according to Subaru. The low power output by this motor is exactly the reason why squeezing every little bit of performance out matters, and why getting UEL is stupid and pointless. You're already dealing with a very low powered car, losing 5-8 horsepower by going with an UEL header over an EL header does matter, even more so.

[Lobo]

Originally Posted by catharsis

There is no turbo charged variant coming out according to Subaru. The low power output by this motor is exactly the reason why squeezing every little bit of performance out matters, and why getting UEL is stupid and pointless. You're already dealing with a very low powered car, losing 5-8 horsepower by going with an UEL header over an EL header does matter, even more so.

Except that it doesn't matter.

If people really want the boxer burble (like me) then a '5-8 horsepower' sacrafice IS worth it, even IF it were that much, which I doubt.

I would still put money on an aftermarket, UEL system still performing better than the stock system. In other words, Boxer burble AND a gain in HP over stock. Maybe not as much of a gain as even lengh but what you don't gain in power your gain in audible pleasure which for some of us is an integral part of the driving experience. HP isn't everything.

[catharsis]

Nice, I see the future of this car. 3in exhausts, hellafrushed, and 19inch wheels with bbk's.

[tripjammer]

Originally Posted by catharsis

Nice, I see the future of this car. 3in exhausts, hellafrushed, and 19inch wheels with bbk's.

haha!

Funny! Its bound to happen bro!