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Old 02-04-2002, 03:46   #1 (permalink)
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how much Performance gain for EF extractors.

How much of a performance gain will i get by adding extractors to my EF xr6. Im already running a sports exhaust and still have to get K&N filters.

Anybody running something similar.
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Old 02-04-2002, 03:55   #2 (permalink)
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Hi Mate, I'm kinda in teh same boat as you i've got a Cat back exhaust with a finer filter.

About extractors obviously varies from engine to engine and brand of extractors but i've heard extractors/headers can gain between 15-20kw at the fly.

A filter will perhaps add 1 or 2kw but it's maily the response of the engine that improves.
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Old 02-04-2002, 04:01   #3 (permalink)
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extra response would be great. Ive noticed it getting a little sluggish recently.

Anybody have a brand eextractor/header to recommend for the EF XR6?

Ill check for responses tomorrow sometime, im outa here for the night.
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Old 02-04-2002, 04:08   #4 (permalink)
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Knightrider_EF

If you read back through the posts re exhausts etc - the general consensus is either HM or Pacemaker. The Pacemakers need to be hooked up to the cat but the HMs come with a high flow cat attached.

Shop around for the best price no matter which one you decide on

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Old 02-04-2002, 04:36   #5 (permalink)
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Dont go for HM.. they are press bend!

If you want something to make your car run better, go for pacemaker or genie.
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Old 02-05-2002, 02:26   #6 (permalink)
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I run Genie's on mine at the moment though have been seriously considering a change to pacemaker, as they utilise "longer dual primary tubes" which tend to help low rev torque
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Old 02-06-2002, 14:51   #7 (permalink)
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As for power gain,i think 15-20kw just for extractors is a bit hopeful.. ive heard power gains of about 12 kw for an exhaust + extractor system is average...but when ur quoting KW figures, anythings possible

(for the record ive got genie extractors and find them fine)
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Old 02-07-2002, 04:08   #8 (permalink)
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Go for the Genies with the long secondaries.

Genie make 2 bases for their extractors - normal is the same as Pacemakers, etc. Long secondaries delete the front resonator and put the cat further back in the system giving heaps better flow. We have done heaps of them, they are good.
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Old 02-07-2002, 04:13   #9 (permalink)
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I run extractors, sports exhaust (went from 4 mufflers and the cat. to 1 muffler and the cat.) on my EF XR6 and it made the car rev out a fair bit quicker. It sounds grumpier too.
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Old 02-07-2002, 04:53   #10 (permalink)
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It all depends on what you are after... sometimes you will gain horsepower & lose torque & visa versa..
Go to someone (ie genie) & get a custom job done, not one off the shelf....
Cheers
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