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Old 10-17-2005, 03:09 PM   #1
Pat L.I.
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Aspen White

Default TWE EL headers + TWE resonated midpipe

Videos to come shortly. it has been too windy to get a clear video clip.

First of all. to quote from TWE. (found this in an old thread while researching the headers)
Quote:
Originally Posted by techworkseng
Wake up! Smell the coffee...... and look at the dyno chart! The Tech Works header gains substantial torque AND horsepower EVERYWHERE!
I have no idea how reports of lost bottom end power started. It is possible that the larger gain in top end power decieves one into believing there is a bottom end power loss. This has been posted before in THIS very thread!
http://www.techworkseng.com/images/nadynotest.gif
I only quote this because of the nonsense that gets repeated on this board over and over again. I was nervous that i would be losing power on the low end. The car has clearly gained power everywhere, and a loss in low end torque should probably never be repeated again.

For those that dont know i am running twe stage 2 cams, ti valve springs /retainers with all the bolt ons (stock cat). Before hand i was running the above but with borla headers.

Comparing the TWE and the borlas.... the TWE are MAJORLY more linear in terms of power delivery. This may make the car feel slower but i assure you it is not. The car starts from a stop with more umph than the borlas, and certainly hits readline with lots more. A definate gain in low end torque with a very satisfying topend over the borlas. The TWE has also given me far better throttle response in any gear.

With the stage 2 cams and EL headers I now enjoy being pushed back into my seat as i accelerate, rather than putting the pedal to the floor and going... thats it?
In terms of WRX power, while i have not been side to side with one. I do not think that i will beat a stock wrx in a straight line. It may be fairly close, but i have a feeling the wrx would still pull away at higher speeds.

In terms of sound. I will greatly miss the borla rumble! infact i now feel like an outcast when passing other subarus on the road! small price to pay for the nice gain that the twes provided.
My exhaust setup is TWE EL's, stock cat, TWE resonated midpipe, scoobysport axleback.

The TWE setup is about 45 % quieter than my old setup with the borla headers and unresonated midpipe. I can actually hear the engine again!! The exhaust note no longer has that chop and spaced out sound to it, and is not nearly as full/thick or bassy. Although it did retain a certain "offbeat" characteristic that still sounds quite distinct and different from any other car. It is not a buzzy honda sound, there is still a slight gurgle to it.

That said. The borlas served their purpose for me. They are great for the low price and are a great option for many people on these boards. slight power increase, great sound. I was satisfied with them for a few years. However the quest for more power lead me down the TWE road, and i am not dissapointed.

Next... have to get my valve lash adjusted. Then off to the dyno to get the Perfect power unit custom tuned.
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Last edited by Pat L.I.; 10-17-2005 at 04:07 PM.
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Old 10-18-2005, 12:52 AM   #2
mranlet
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Excellent! You didn't happen to get a "before" dyno, did you?
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Old 10-18-2005, 06:43 AM   #3
X4 SRT
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That sounds great man! But, why are you still running the stock cat with all that work done? I would say you are losing probably 10hp(maybe even more) by leaving the stock cat in place; that thing is very restrictive. If you don't want to run a straight pipe, then at least get a hiflow cat.

As of now I'm running full header back exhaust: TWE header, TWE cat delete, stromung catback, along with my cobb cai, and light pullies. With everything but the cat delete pipe, the car felt quicker than stock, and had more power especilly when on the highway, and trying to get to higher speed. After I installed the cat delete pipe though, the car became a whole lot different. Now the car pulls all the way to redline, there doesn't seem to be any dips in the power, and overall it just feels so much quicker. I'm planning on running TWE stage II cams with PP by early next year. Can't wait.
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Old 10-18-2005, 08:53 AM   #4
Siper2
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I'll probably end up with the same setup that you have, X4, when I do my full exhaust (hopefully next year). Though I may go for a Magnaflow muffler, since I already have a 2.25" midpipe, and at least some of the WRX axleback piping maybe can be used again.... I don't know.

=S2=
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Old 10-18-2005, 09:59 AM   #5
Pat L.I.
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unfortunately there is no before dyno .. sorry guys.
I was on the fence about getting the cat. Eventually i may go through with it.

hopefully i will be able to get a video clip done on saturday. I will post my borla setup and TWE setup side by side.
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Old 10-19-2005, 07:06 AM   #6
X4 SRT
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Quote:
I will post my borla setup and TWE setup side by side.
Get ready to be seriously dissapointed. The TWE set up doesn't sound too bad, but not as mean as the borla setup. But, for me the choice was obvious: power over sound.

Right now with my set up (TWE header, TWE cat delete, Stromung catback) the car sounds a little raspy. I'm really starting to think it's the stromung catback, and am trying to decide if I should just get rid of the muffler section all together and have straight piping with a res made for the car at a muffler shop. I'm not sure how loud it will be though. I'm guessing that with no mufler and the rest of the header back, it will be really loud. I just want to get rid of the raspy sound though. If it works out, then I'll just sell th stromung and pocket some money. Hell, I'll probably use that money to buy the reallitek PP.
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Old 10-19-2005, 08:32 AM   #7
Jesse00
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Quote:
Originally Posted by X4 SRT
Get ready to be seriously dissapointed. The TWE set up doesn't sound too bad, but not as mean as the borla setup. But, for me the choice was obvious: power over sound.

Right now with my set up (TWE header, TWE cat delete, Stromung catback) the car sounds a little raspy. I'm really starting to think it's the stromung catback, and am trying to decide if I should just get rid of the muffler section all together and have straight piping with a res made for the car at a muffler shop. I'm not sure how loud it will be though. I'm guessing that with no mufler and the rest of the header back, it will be really loud. I just want to get rid of the raspy sound though. If it works out, then I'll just sell th stromung and pocket some money. Hell, I'll probably use that money to buy the reallitek PP.
a good resonator will get rid of your raspiness and not effect your hp... much. You will puff out gas smelling emission when you do a straight pipe. And it will be LOUD even with a resonator. Im pretty sure its illegal too in whatever state your in.
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Old 10-19-2005, 08:56 AM   #8
Siper2
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Hmm yeah that might be it. I don't plan on ever eliminating the cats on my RS. Might go with the "super stock" TWE one (to save money over the RandomTech I guess), but I wouldn't eliminate them.

The TWE midpipe has the resonator too.... my Stromung doesn't.
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Old 10-19-2005, 10:14 AM   #9
Pat L.I.
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Quote:
Originally Posted by X4 SRT
Get ready to be seriously dissapointed. The TWE set up doesn't sound too bad, but not as mean as the borla setup. But, for me the choice was obvious: power over sound.
I dont know about seriously dissapointed. I still like the sound. But i certainly did lose that sweet sweet rumble that i loved! I can see how some people wouldnt like it.
The TWE setup is quite the jump in sound from the borla setup. But it is definately well worth the trade off for the gain in power.
like i said, hopefully it will be less windy this weekend and i will be able to get a good clip.

Last edited by Pat L.I.; 10-19-2005 at 10:26 AM.
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