Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

greddy EVO2 & helix dp 0R HKS catback and dp???

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Old 04-05-2005, 12:53 AM
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correct me if im wrong, but i heard that the NUR spec will bolt up to the PDE pipe, although it is not the ideal match. any opinion? I have the PDE dp and was considering the NUR spec until i heard other wise.
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Old 04-05-2005, 01:38 PM
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i have HKS Hipower and dp and it is great
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Old 04-05-2005, 01:48 PM
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I have the GReddy EVO2 with the HKS catless DP and UP and it seems to work ok
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Old 04-05-2005, 02:42 PM
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i would go with the evo2 since its quiet..
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Old 04-05-2005, 04:34 PM
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Just don't get the HKS downpipe.
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Old 04-12-2005, 09:56 AM
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Helix, every time someone sees mine the comment on the quality of it! It really is a good set up.
John
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Old 04-15-2005, 08:09 PM
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Im running a Helix DP and HKS Ti Carbon Exaust. It has a nice purrrrr
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Old 06-06-2005, 11:33 AM
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PDE Downpipe and

B&B catback = Low Growl...deep, low tone, loud but not as loud as Blitz Nur-Spec. Temporarily put in storage while I play with my new toy...the exhaust below...even though it is on the loud side...the twin tip design is pretty stealth to the police...

HKS Carbon Ti (have on now) = low tone but higher than the B&B...fairly quiet compare to the B&B but at WOT, the Carbon Ti gets pretty darn loud...scare the crud out of some cars next to you...gotta watch out for the police on this one...

This is on a 04 sti
Both had very good power gains together with the downpipe...mostly the downpipe though...the two exhausts above are louder than if you had the stock downpipe due to the nature of the catless design of the PDE model that I have.

Last edited by Island Style; 06-06-2005 at 11:36 AM.
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Old 06-11-2005, 04:56 AM
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i got the perrin dp and the hks hi power exhaust...and its workin out pretty good for now....i just put them on...05' sti
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