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Hi I wonder if anyone could help me I'm new to the scooby world.
I have a version 2 classic and I'm looking and buying after market headers, I'm only looking to run about 330bhp,
My question is if I went with equal length headers will it really make that much of a difference in performance at this early stage over a aftermarket unequal length header?
As I'm not if il like the sound on the equal length headers and who wants a car they don't like the sound of
at that level IMO you would be far better to stick with std style set-up but spend your $$ on the likes of the Harvey Smith "trick" up-pipe which we match to your mods/needs and potentially port the std headers
at that level IMO you would be far better to stick with std style set-up but spend your $$ on the likes of the Harvey Smith "trick" up-pipe which we match to your mods/needs and potentially port the std headers
Thanks for the advice mate but unfortunately when I bought the car it came with an aftermarket set of unequal length headers which has cracked and started to blow, so it's time to replace, would equal really make that much difference and the power in going to run and the burble sounds so good!
It has anyone got any videos of an equal length classic I could hear please
Unequal length EXHAUST MANIFOLDS are better than EQUAL LENGTH EXHAUST MANIFOLDS. If i was you i would search for a standard unequal length exhaust manifold.
You loose the boxer burble, and for me thats what makes the car.
Unequal length EXHAUST MANIFOLDS are better than EQUAL LENGTH EXHAUST MANIFOLDS. If i was you i would search for a standard unequal length exhaust manifold.
You loose the boxer burble, and for me thats what makes the car.
How are the UEL manifolds better? EL headers give better spool, more power and more torque, the only downside is you loose most of the subarea sound. If you're into that kind of thing. So I fail to see how UEL is better lol....
Personally loosing the sound is a huge benefit to me!
Makes them sound like any other Jap car Or even worse a non turbo
I've upgraded mine to stainless steel Unequal length EXHAUST MANIFOLDS.
Originally Posted by JGlanzaV
How are the UEL manifolds better? EL headers give better spool, more power and more torque, the only downside is you loose most of the subarea sound. If you're into that kind of thing. So I fail to see how UEL is better lol....
Personally loosing the sound is a huge benefit to me!
Makes them sound like any other Jap car Or even worse a non turbo
I've upgraded mine to stainless steel Unequal length EXHAUST MANIFOLDS.
Does mine sound like a non turbo? No. Can you still tell it is a subaru, yes. You loose all of the burble with tin scroll, you still get some with EL headers as my video above shows
You haven't upgraded though, in reality for your spec it is probably a downgrade. The headers are very important on a build and using the correct size etc is vital. Id agree with Alan and use a ported set of std headers with a trick up pipe
Last edited by JGlanzaV; 09 January 2016 at 03:06 PM.
Non turbos and small turbos tend to sound the most subaru'y.. I have the rcm headers and the sc42, 96db exhaust, just has a slight burble, I wouldnt mind it with el or uel to be honest, as long as you replace with decent quality headers, the rcm/gt headers are good but do crack apparently. My slip joints are welded up too. Been busy wrapping my headers up, waiting for more wrap to arrive.
Last edited by A1AXX; 09 January 2016 at 05:11 PM.
Reason: Wrong word!
For me, the burble is a big part of owning my Impreza. It's the one thing I didn't like about my JDM when I had it.
Don't believe folk when they say it sounds like a 'rally car' lol (which makes me chuckle whenever someone says it). It sounds like any other car with an exhaust IMO.
But if i heard your Impreza go past my house i wouldn't think it sounded like an Impreza either. And as i recommended, to go for standard exhaust manifold.
As with mine i did notice a difference with my stainless steel exhaust manifold, the power delivery of the turbo is smoother and seems to last longer a cross the rev range, but i can of prefer it before.
I will see how it drives when my new turbo is fitted.
Originally Posted by JGlanzaV
Does mine sound like a non turbo? No. Can you still tell it is a subaru, yes. You loose all of the burble with tin scroll, you still get some with EL headers as my video above shows
You haven't upgraded though, in reality for your spec it is probably a downgrade. The headers are very important on a build and using the correct size etc is vital. Id agree with Alan and use a ported set of std headers with a trick up pipe
I'm on my 4th classic,my latest a twin scroll with the equal length HEADERS
3" cobra and sounds amazing imo
Edit: btw.....**** me your car is quick banny&sounds awesome,any more vid clips??
Double Edit: I'm looking for a set of HEADERS&up-pipe of anyone as a set for sale
Last edited by ossett2k2; 09 January 2016 at 11:57 PM.
I'm on my 4th classic,my latest a twin scroll with the equal length HEADERS
3" cobra and sounds amazing imo
Edit: btw.....**** me your car is quick banny&sounds awesome,any more vid clips??
Double Edit: I'm looking for a set of HEADERS&up-pipe of anyone as a set for sale
There is only one proper solution
A holy header....
http://www.killerbmotorsport.net/pe-products/performance-headers/el-4-1-performance-holy-header-up-pipe.html
Decent equals would always give a benefit, but your best bet is standard headers with the trick up pipe. Decent is the key here though, and they will warp and crack sooner or later unless you get the killer b ones
Tomei, gt spec, rcm are all the same, 304 stainless same design etc. If you're not wrapping and abusing als and lc they should last longer
Originally Posted by ossett2k2
Nice one
I think a set of killerB custom made are out of my price range.
I don't use ALS or LC much tbh,in fact I've not even tried the LC yet.
I've been abusing the ALS and LC, headers are absolutely perfect. Only issue was the previous owner left the pre turbo lamda in, it melted and went through the turbo before I bought it, gave up last week eventually! Less than a year old sc42 lol
I've been abusing the ALS and LC, headers are absolutely perfect. Only issue was the previous owner left the pre turbo lamda in, it melted and went through the turbo before I bought it, gave up last week eventually! Less than a year old sc42 lol
Can you feel much of a difference when using ALS? I've not used it many time,only when someone drives up my **** and fancy melting their bumper
I've been abusing the ALS and LC, headers are absolutely perfect. Only issue was the previous owner left the pre turbo lamda in, it melted and went through the turbo before I bought it, gave up last week eventually! Less than a year old sc42 lol
The headers will crack sooner or later s you exceed the heat tolerances of 304 stainless and it becomes brittle...
Originally Posted by ossett2k2
Can you feel much of a difference when using ALS? I've not used it many time,only when someone drives up my **** and fancy melting their bumper
No difference at all, it reduces your braking forces and you wont gain any meaningful boost between gears as you can only flow as much as as you can get through the IACV, unless your using the DBW and you can jack the throttle slightly Once you are running enough ALS to gain meaningful positive boost pressure bewteen gears you are definitely needing a decent set of manifolds! and possibly an electric vac pump for your brave servo!
Can you feel much of a difference when using ALS? I've not used it many time,only when someone drives up my **** and fancy melting their bumper
Bit pointless in all honesty, besides just trying to melt exhaust valves and turbos, its not the true rally car style als.. It is noticable, bit better throttle response, but completely outweighed benifits..
Originally Posted by JGlanzaV
The headers will crack sooner or later s you exceed the heat tolerances of 304 stainless and it becomes brittle...
No difference at all, it reduces your braking forces and you wont gain any meaningful boost between gears as you can only flow as much as as you can get through the IACV, unless your using the DBW and you can jack the throttle slightly Once you are running enough ALS to gain meaningful positive boost pressure bewteen gears you are definitely needing a decent set of manifolds! and possibly an electric vac pump for your brave servo!
They may crack, they've been absolutely roasted by me, but after a lot of heat cycles, als and some track days they are holding out.. Not to big a job to whip them back off to be honest with you, took the turbo and headers off in an hour last week!
There's always FF shifting. I was still seeing 0.15 bar spikes over 1.7bar when the turbine was missing the ends of the its paddles lol.. Dont think rally cars rely on anti lag to maintain boost in gear changes when they are pedal to the metal in gear changes mate.
09 January 2016, 11:16 AM
Equal length headers
Or even worse a non turbo 
