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Old 01-07-2009, 04:51 PM   #1
02aspenwrx
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Default Gruppe-S UEL Header questions

Thinking about picking up this header and was wondering if I would be able to install it with my stock wrx oil pan. I've heard of some headers that will need a sti oil pan to clear?
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Old 01-07-2009, 04:58 PM   #2
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you will be able to use your oil pan on your wrx if you were using there equal length you would need an sti oil pan.
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Old 01-07-2009, 05:00 PM   #3
02aspenwrx
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Awesome! I Appreciate it.
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Old 01-07-2009, 05:46 PM   #4
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Very good headers.........i had no problems at all with mine.
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Old 01-08-2009, 11:11 AM   #5
Marlons101
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did you order them yet?
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Old 01-09-2009, 01:27 AM   #6
02aspenwrx
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Picking them up this weekend!
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Old 01-09-2009, 01:29 AM   #7
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You will need to swap out your oil pan for one off an STi.
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Old 01-09-2009, 01:55 AM   #8
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Quote:
Originally Posted by illmatic View Post
You will need to swap out your oil pan for one off an STi.
^^^^Bad info here. You will be fine with your WRX oil pan. Here is the link for technical info. http://www.gruppe-s.com/Subaru/subex.htm
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Old 01-09-2009, 10:20 AM   #9
69subaru360
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I have this header and the stock oil pan. It fits fine, it is nowhere near the oil pan.
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Old 01-09-2009, 03:40 PM   #10
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Just be prepared for some additional turbo lag if you're basically stock and have already had your tune optimized for your stock manifolds/crosspipe. I put them on my 03 WRX a few years ago after having my setup all tuned for my stock manifolds and lost 20 hp, a ton of mid-range torque, and about 500 RPM in spool. To be fair, though, I had a custom tune that was optimized for the stock pre-turbo exhaust and spooled MUCH faster than stock and had WAY more mid-range power. My tuner was able to re-tune my car to get most of the power back, but could never get the super-fast spool that I had with the stock manifolds.
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Old 01-09-2009, 04:31 PM   #11
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Quote:
Originally Posted by Chuck H View Post
Just be prepared for some additional turbo lag if you're basically stock and have already had your tune optimized for your stock manifolds/crosspipe. I put them on my 03 WRX a few years ago after having my setup all tuned for my stock manifolds and lost 20 hp, a ton of mid-range torque, and about 500 RPM in spool. To be fair, though, I had a custom tune that was optimized for the stock pre-turbo exhaust and spooled MUCH faster than stock and had WAY more mid-range power. My tuner was able to re-tune my car to get most of the power back, but could never get the super-fast spool that I had with the stock manifolds.
This is true. With the 2.5l motor however you will see a gain in performance across the entire powerband. However, with the 2.0l, you will certainly lose some low end torque but gain a significant amount of mid range and top end power.
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Old 01-13-2009, 12:21 PM   #12
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Quote:
Originally Posted by Chuck H View Post
Just be prepared for some additional turbo lag if you're basically stock and have already had your tune optimized for your stock manifolds/crosspipe. I put them on my 03 WRX a few years ago after having my setup all tuned for my stock manifolds and lost 20 hp, a ton of mid-range torque, and about 500 RPM in spool. To be fair, though, I had a custom tune that was optimized for the stock pre-turbo exhaust and spooled MUCH faster than stock and had WAY more mid-range power. My tuner was able to re-tune my car to get most of the power back, but could never get the super-fast spool that I had with the stock manifolds.
I've got a vf34 and all the supporting mods + EWG. I found a deal on the gruppe-s so I had to jump on it. I'll let my tuner see what he can bring out of it. Im now contemplating on just selling the header and just porting my stocker. We'll see.
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Old 01-13-2009, 12:37 PM   #13
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I dont think youll regret it. Are you going to wrap your exhaust? what ewg kit you go with?
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Old 01-13-2009, 01:55 PM   #14
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I've been thinking about wrapping it. I went with the grimmspeed ewg.
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Old 01-13-2009, 02:05 PM   #15
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do you happen to know the inlet diameter of the header and uppipe?
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Old 01-13-2009, 02:07 PM   #16
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I sure don't. I bet we can run some searches and find out.
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Old 01-13-2009, 02:12 PM   #17
Marlons101
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reason i asked was i got the gruppes uel header and iag ewg uppipe. i think my uppipe is 2.3ID from the header, then tapers down to a 2" velocity stack...then tapers again to 1.7id which is the same as the turbo inlet? I dont really have a point in this I just wanted to know the ID of the grimmspeed as that was my first option to go with for the ewg but found a killer deal ona bnib iag ewg kit
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Old 01-13-2009, 02:18 PM   #18
02aspenwrx
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No, you've got a point. Let's see if we can get someone to point this out for us and or one of the grimmspeed people to chime in.
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Old 01-13-2009, 04:06 PM   #19
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i say f it and get a alky kit!
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Old 01-13-2009, 04:36 PM   #20
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02aspen what other mods do you have along with the header?
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Old 01-13-2009, 05:21 PM   #21
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he has a vf34 with supporting mods including a ewg.
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Old 01-13-2009, 05:31 PM   #22
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Quote:
Originally Posted by 1sicWRX View Post
This is true. With the 2.5l motor however you will see a gain in performance across the entire powerband. However, with the 2.0l, you will certainly lose some low end torque but gain a significant amount of mid range and top end power.

How about with a 2.5l hybrid?
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Old 01-14-2009, 08:51 AM   #23
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I am in the market for uel headers as well, i already have a 2in uppipe and 3in down and catback as well as a tune for it ( actually a re-flash by vishnu) but your saying that i'm going to lose power w/ the headers? i may just skip that mod all together then. Especially if im going to loose my quick spool, the whole reason i wanted to get them was to improve that.(swapping in a vf34 soon) But on gruppe-s they point out which headers will need an oilpan swap, and also have dyno charts on their headers.
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Old 01-14-2009, 02:38 PM   #24
Marlons101
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that dyno chart is on a sti i believe...not a 2.0wrx

anybody find the size of gruppes header and grimmspeed uppipe ID?
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Old 01-14-2009, 02:54 PM   #25
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I measured the collector on my gruppe-s UEL header and it was right around 2.35" ID.
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