rougeben83 Posted August 23, 2016 Share Posted August 23, 2016 Thanks guys. What's the ratio on the OBXT? I've found the lock to lock is higher (3.2 vs 2.6? or thereabouts) vs the LGT but I can't find the ratio listed. Having the 05 STI steering rack already is the primary reason I'm looking into the upgrade. Though when I ran it in my 03 Legacy (mind you, the wheel base are somewhat similar to the OB) the steering feel was substantially tighter and felt more "dialed-in" - although the latter could also be because I was running more negative camber and other STI front suspension bits like the control arms. Rhitter, did you also upgrade the U joint? I think I read somewhere the OB U joint being longer than the LGT, so I'm not 100% sure about the '15 STI U joint being 100% interchangeable. And yes AFAIK the track and suspension geometry on the OB did not change throughout the BP chassis years. Link to comment Share on other sites More sharing options...
Rhitter Posted August 23, 2016 Share Posted August 23, 2016 OBXT = 3.2 lock to lock or 16.5:1. I installed the Perrin steering lockdown (instead of messing around with the STI u-joint). My OBXT build Link to comment Share on other sites More sharing options...
rougeben83 Posted August 25, 2016 Share Posted August 25, 2016 Thanks, the steering lockdown was my 2nd option. Link to comment Share on other sites More sharing options...
cBax Posted September 23, 2016 Share Posted September 23, 2016 I am getting ready to pull the trigger on this for my '05 OBXT. Current rack has a lot of slop and still making some noise after new inner/outer tie rods. I've got some LGT rear LCA mounts and plan to remove the subframe spacers. I'm assuming that I will be able to just swap to a solid STi steering joint and I'll be GTG. Is that correct? '05 Outback XT www.facebook.com/baxleysspeedshop www.baxleysspeedshop.com Link to comment Share on other sites More sharing options...
Phate Posted September 28, 2016 Share Posted September 28, 2016 This thread almost makes me wish my steering rack was crappy. Can't justify replacing a nice tight 85k mile LGT rack, although I can absolutely appreciate the difference a faster rack makes. My accord handles better than my LGT, but since the LGT has a much faster rack it feels a lot more willing and responsive chucking it around. Link to comment Share on other sites More sharing options...
scoobyscoodle Posted September 28, 2016 Share Posted September 28, 2016 I'm with you. Every time I get under the front of my car part of me deep down is hoping to see a leaking steering rack, haha. Can't bring myself to toss a perfectly good rack. Link to comment Share on other sites More sharing options...
PeterJMC Posted September 30, 2016 Share Posted September 30, 2016 I'm finally getting my car aligned... It only took me 9ish months to complete the install and get it to an alignment shop. Just been so busy, lazy, forgetful... This should have only been a weekend job. Sent from my SM-G935T using Tapatalk Link to comment Share on other sites More sharing options...
scoobyscoodle Posted September 30, 2016 Share Posted September 30, 2016 Interested in results Peter! Link to comment Share on other sites More sharing options...
PeterJMC Posted September 30, 2016 Share Posted September 30, 2016 Just got back home. The steering feels wonderful. Smooth and solid. The turning ratio takes a bit to get used to. I did a few things along with the steering rack so your mileage may vary. - '15 STi Steering rack (purchased a used rack off eBay for $299) - STi steering joint - Whiteline Steering bushing kit - Whiteline roll center kit I do have the VDC light on. Not sure what is causing it to light up. I did pull off my steering wheel to help center the rack, and I also applied a new etune. I'll have to check with the tuner to see if there is a setting that is causing it to light up. Link to comment Share on other sites More sharing options...
scoobyscoodle Posted September 30, 2016 Share Posted September 30, 2016 Does VDC engage while you are driving at all? Is it just turned off or not functioning properly? Link to comment Share on other sites More sharing options...
PeterJMC Posted September 30, 2016 Share Posted September 30, 2016 It it's non-functional right now LED remains lit upon start-up. This wouldn't be anything the steering rack did since the steering rack is all mechanical. I must have tripped something up during the install, fuse, etune setting, or something in the steering wheel/clock spring. Disconnecting the 12v battery did nothing to clear the error. Link to comment Share on other sites More sharing options...
scoobyscoodle Posted September 30, 2016 Share Posted September 30, 2016 Did you turn the wheel without it being connected to the rack? This would break the roll connector and give you that warning light. I have since learned my lesson. Link to comment Share on other sites More sharing options...
PeterJMC Posted September 30, 2016 Share Posted September 30, 2016 Did you turn the wheel without it being connected to the rack? This would break the roll connector and give you that warning light. I have since learned my lesson. I did, but didn't rotate it more than 1/2 way remember reading about folks breaking this before. I'm thinking that I may have broken something there regardless though. Link to comment Share on other sites More sharing options...
scoobyscoodle Posted September 30, 2016 Share Posted September 30, 2016 Hmm, yea you'd need to turn it more than that to break the roll connector. Link to comment Share on other sites More sharing options...
baci Posted October 12, 2016 Share Posted October 12, 2016 I am about to make the swap on my 08 spec.b. Bummed to find out that I have to disable VDC. More so because I just wanted the car to still have a OEM feel, so no lights or quirks. Driving with it off isnt a big deal. Maybe ill have to look into the arduino hack. Link to comment Share on other sites More sharing options...
scoobyscoodle Posted October 12, 2016 Share Posted October 12, 2016 I'm still not convinced that the VDC will give you issues in an LGT, please let us know how it turns out! Link to comment Share on other sites More sharing options...
Kenny-san Posted October 12, 2016 Share Posted October 12, 2016 If the harness connectors are the same installing the '15 sti abs unit should fix the vdc issues. Roll connector is just a input for the abs/vdc control module. Another option that might work is to have a dealer set the parameters in the abs/vdc control module to sti spec. If your stock control module accepts the parameters it would think it is in an sti and should not freak out with the different steering angle values. Just some ideas. Link to comment Share on other sites More sharing options...
xtea Posted November 23, 2016 Share Posted November 23, 2016 Just picked up one of these 2015 racks on ebay for a pretty good price. So next question, sti u-joint vs torque solutions lockdown damper? I think because I have an outback I have I have to use my stock u-joint correct? Link to comment Share on other sites More sharing options...
scoobyscoodle Posted November 23, 2016 Share Posted November 23, 2016 I just put the Perrin damper lockdown in my car, since the install took 10 minutes and I'm too lazy to swap the u-joint. I'm really happy with it and it's also much cheaper than the Sti part. Link to comment Share on other sites More sharing options...
xtea Posted November 23, 2016 Share Posted November 23, 2016 I just put the Perrin damper lockdown in my car, since the install took 10 minutes and I'm too lazy to swap the u-joint. I'm really happy with it and it's also much cheaper than the Sti part. If they are essentially the same result in steering I'll do the lockdown. I did find a used sti joint for $80 though. I think Torque Solutions makes an identical one to perrin and I found one for $50. Link to comment Share on other sites More sharing options...
Rhitter Posted November 23, 2016 Share Posted November 23, 2016 I think our u-joint is longer. Never held the STI one though so I can't say for sure. I am happy with the Perrin lock down. I did have to pull my u-joint completely off to get it to sit right though. My OBXT build Link to comment Share on other sites More sharing options...
PeterJMC Posted November 23, 2016 Share Posted November 23, 2016 (edited) The STi one mounts up just fine to a LGT, not sure about OBXT. The STi u-joint came with the '15 rack I bought off ebay last year Edited November 23, 2016 by PeterJMC Link to comment Share on other sites More sharing options...
Rhitter Posted November 23, 2016 Share Posted November 23, 2016 You don't have front subframe spacers My OBXT build Link to comment Share on other sites More sharing options...
PeterJMC Posted November 23, 2016 Share Posted November 23, 2016 You don't have front subframe spacers Ahh... With that let me update my response. Link to comment Share on other sites More sharing options...
Rattsl Posted November 28, 2016 Share Posted November 28, 2016 Found this, and now I'm wondering about it. I saw Underdog cutting the inner tie rods, but was it necessary? If so, 6-8mm seems fine. Next question, OEM, Reman, or? If I could source a wrecked STI, that would be my best bet. Next question...what are the major challenges in the swap? I've been reading up, but haven't found anything of the sort. Link to comment Share on other sites More sharing options...
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