Equal or Unequal Length Headers
06-21-2009, 08:16 PM
#108
Seriously, I don't think ANYTHING short of a V10-12 sounds anywhere close to how an STi with turbo back + highflow cat sounds... Its like a masterpiece! Nothing beats the sound of a subie as described above passing you (while you're standing outside) at WOT! Getting a high flow turbo helps too and adds that amazing turbo whine to the mix!
VW R32's sound nice with exhaust as well.
06-21-2009, 08:26 PM
#112
06-21-2009, 09:35 PM
#115
Here's my experience. I've used a gruppe-s UEL header, Perrin ELH, and Gruppe-S EL header(and of course the stock one). So far i've liked the Gruppe-S EL the best. I first used the Gruppe-S UEL header and gained a good bit of power from stock(exactly how much I don't know as I also changed turbo inlet pipe, intake, uppipe). A friend told me to try the Perrin ELH as it should spool the turbo faster due to it's smaller primary pipes(35mmi.d.) So I changed the header and went for a retune. I lost 16hp/25ft lbs of torque, and spool wasn't even improved. Back to the gruppe-s uel I went. Maybe temp had a part in it, as my gruppe-s uel tune was in late February and the Perrin in late August. Both were crucial racing coated btw. I then went with a dom3 and supporting mods with the gruppe-s uel header and spool was kinda slow for my liking(I use the car for autox) The gruppe-s el header i'm not sure how it would compare to the uel version, as I went to a rotated gt30 setup along with the el header as a few friends have them and love them, but spool is awesome and the exhaust note is fantastic.
Btw I never had any issues with the gruppe-s uel header, no cracking or anything, though Mike at GST would always ask if it cracked yet when i'd come in for a retune lol. I had that one for over 2 years with over 50 autox events on them with 2 drivers(6-12 runs each event)
Btw I never had any issues with the gruppe-s uel header, no cracking or anything, though Mike at GST would always ask if it cracked yet when i'd come in for a retune lol. I had that one for over 2 years with over 50 autox events on them with 2 drivers(6-12 runs each event)
06-21-2009, 10:24 PM
#116
Registered User
iTrader: (19)
Join Date: Aug 2006
Location: Campbell
Posts: 1,475
Car Info: AW Pig-STI
SoSteezy/Andy
to answer your question, I tuned & dyno'd my car before and after installing the Tomei ELH & Uppipe. On my setup, i went from 267/297 HP/TQ to 280HP@5250/320@3750 (Tune by Mike/GST).
What i've added for my current setup is:
to answer your question, I tuned & dyno'd my car before and after installing the Tomei ELH & Uppipe. On my setup, i went from 267/297 HP/TQ to 280HP@5250/320@3750 (Tune by Mike/GST).
What i've added for my current setup is:
- Tomei ELH/Uppipe
- Titek Catted DP
- Cobb Exhaust, w/ 3" flange mod
- GST tuned, at 19psi.
06-22-2009, 12:55 AM
#118
Registered User
Join Date: Jun 2006
Location: Santa Rosa, CA
Posts: 1,610
Car Info: 4日本車
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P.S. btw the Full-Race piece is nice, yes, but if you've held the APS, and the Full-Race, and a Tomei, and other headers, you'll know the APS is by far the lightest, or possibly tied with the Perrin EL for lightest weight. The Full-Race wins the heaviest sob award.
