Performance EL Headers 08-11 N/A

[Steve2.5i]

I decided to contact TWE (TechWorks Engineering Inc.[Tom]) for information on the Equal Length Headers. These are produce for our 08-11 Impreza's and I thought I'd shed some light for those looking for gains and also share my findings for my own future purchase/others. The email goes as followed:

Our headers are true equal length +/- 0.25”, and have 1.625” primaries with a merge collector having a 2.125” venturi opening up to a 2.5” outlet or 2.0” venture opening up to a 2.25” outlet. The latter is preferred. Flanges are laser cut. The header has 2 double slip joints and they do not leak! All fitment points are the same as OEM. We do locate the primary cat to the secondary pipe which does require extending the O2 sensor wires for the second O2 sensor. We utilize a high flow 200cell metal substrate cat for the secondary pipe section. This secondary section is generally built with a 2.25” pipe up to the cat and 2.5” out. All items are 304 US or Canada grade stainless steel. Every component is manufactured in the US or Canada . The pics enclosed are of the prototype and do not show the venturi section now employed in the design.





These Headers are available for purchase! The only downside is the steep price but think of it this way, your paying for top notch quality and since when are car parts cheap . When I am able to purchase these I will report back hopefully with results, it just won't be for a while due to money issues. [I do not work for TWE or am I associated in anyway with TechWorks Engineering Inc.] Happy New Years!

-Steve

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[iommichild]

Super interested in this... If the gains are decent, I may give it a try...

[MarcoPolo360]

Love the rumble from my RSR header right now, so I doubt I'll be switching them anytime soon. However, I am interested in seeing how well these headers perform.

Eager for updates.

[RaceFaceXC]

Originally Posted by Steve2.5i

I decided to contact TWE (TechWorks Engineering Inc.[Tom]) for information on the Equal Length Headers. These are produce for our 08-11 Impreza's and I thought I'd shed some light for those looking for gains and also share my findings for my own future purchase/others. The email goes as followed:

Our headers are true equal length +/- 0.25”, and have 1.625” primaries with a merge collector having a 2.125” venturi opening up to a 2.5” outlet or 2.0” venture opening up to a 2.25” outlet. The latter is preferred. Flanges are laser cut. The header has 2 double slip joints and they do not leak! All fitment points are the same as OEM. We do locate the primary cat to the secondary pipe which does require extending the O2 sensor wires for the second O2 sensor. We utilize a high flow 200cell metal substrate cat for the secondary pipe section. This secondary section is generally built with a 2.25” pipe up to the cat and 2.5” out. All items are 304 US or Canada grade stainless steel. Every component is manufactured in the US or Canada . The pics enclosed are of the prototype and do not show the venturi section now employed in the design.

These Headers are available for purchase! The only downside is the steep price but think of it this way, your paying for top notch quality and since when are car parts cheap . When I am able to purchase these I will report back hopefully with results, it just won't be for a while due to money issues. Happy New Years!

-Steve

Don't forget to budget for a tune. Gains without a tune will be noticeable but after a good tune it is impressive.

[Steve2.5i]

Originally Posted by RaceFaceXC

Don't forget to budget for a tune. Gains without a tune will be noticeable but after a good tune it is impressive.

Yes sir, totally agree. Ill see what comes first my wrx or this

[d.o.b 2.5i]

Also very interested in hearing more about the headers and seeing the power gains after the tune. Where can i go to get more info about the headers?

[Steve2.5i]

Originally Posted by d.o.b 2.5i

Also very interested in hearing more about the headers and seeing the power gains after the tune. Where can i go to get more info about the headers?

http://www.techworkseng.com

[iommichild]

Did you just email them from the address on the site? I emailed them a couple days ago and still haven't heard back....

[Steve2.5i]

Originally Posted by iommichild

Did you just email them from the address on the site? I emailed them a couple days ago and still haven't heard back....

If u want a direct answer or to make an order give them a call. The last email I received from them, he explained they were pretty busy.

[s1eepR]

But what kind of gains have been seen in testing?

[Steve2.5i]

Originally Posted by s1eepR

But what kind of gains have been seen in testing?

Can't really give u a clear answer since I myself have not bought the headers or had my car dyno'd with em. From what I was reading with Delta's 1000 grind n the TWE El/timing adv it was about 20-30 crank or whp if I'm not mistaken (feel free to correct me) You'd see tq/hp gains throughout the whole range as well as a better throttle response.