pjcampbell Posted August 2, 2017 Share Posted August 2, 2017 Thanks - here is my build thread. I was figuring a lot of things out as I went along. The kit didn't quite fit the car so there was a lot of messing around. http://www.subaruoutback.org/forums/109-gen-3-2005-2009/416026-raptor-sc-my-05-california-2-5i-5mt.html Did you ever run into P0068 code with your setup? I've been getting it (actually before I supercharged but after I had installed the new bigger MAF housing with honeycomb air straigthener) and trying to decide if I should just disable the code or if it's something I need to try to fix. I think it means that the MAF and MAP disagree on the air reading(???). My fuel trims are OK. Link to comment Share on other sites More sharing options...
1stick3pedals Posted August 3, 2017 Author Share Posted August 3, 2017 Thanks - here is my build thread. I was figuring a lot of things out as I went along. The kit didn't quite fit the car so there was a lot of messing around. http://www.subaruoutback.org/forums/109-gen-3-2005-2009/416026-raptor-sc-my-05-california-2-5i-5mt.html Did you ever run into P0068 code with your setup? I've been getting it (actually before I supercharged but after I had installed the new bigger MAF housing with honeycomb air straigthener) and trying to decide if I should just disable the code or if it's something I need to try to fix. I think it means that the MAF and MAP disagree on the air reading(???). My fuel trims are OK. Looks like you got a lot of flak in the beginning like usual when it comes to these builds. I'll have to check out a little better when I have more time. Looks fun though. I never had the P0068 code. If the tune is good, MAF is calibrated right, MAP is scaled properly, fuel trims are good, and you're not getting any knock, I would say to just turn it off. Did your tuner give you any feedback on the code? Link to comment Share on other sites More sharing options...
pjcampbell Posted August 22, 2017 Share Posted August 22, 2017 Hey thanks, I wanted to ask one other question. What plug gap do you run and which plugs? The Raptor folks told me to just stick with .043" but run Iridiums. The gap seems huge (as you probably know it's roughly the stock NA gap.) but I haven't had a chance to tinker with it otherwise. I don't get any misfires or "cylinder roughness" in logging or anything like that but wonder if there's an advantage to going down. Haven't figured anything out on the P0068. It never showed up during the dyno run but I can make it appear any time by going up a slight incline in second gear at very low throttle. I don't think it is super important since the only time it ever comes on is low rpm, low load, low throttle in closed loop. But I turned it off for now but maybe will come back to it if I'm bored heh. Link to comment Share on other sites More sharing options...
bomberlegacy Posted August 23, 2017 Share Posted August 23, 2017 I asked Tim several times about the plug gap, it does seem big for boost. Plus, the stuff on rs25 forums about adding boost ALWAYS says to reduce the gap to .029-.031 Tim always told me to keep it big unless you get misfires '08 Legacy 2.5i - hybrid intake - delta 1000 - E85 - magnaflow exhaust Link to comment Share on other sites More sharing options...
pjcampbell Posted August 24, 2017 Share Posted August 24, 2017 Thanks, yeah that is what he said. I don't see any misfires monitoring "roughness monitor cylinder #1,2,3,4" so I guess i'm good. If I gapped it tighter, without a dyno, I don't know that I'd really be able to tell if it helped. Link to comment Share on other sites More sharing options...
1stick3pedals Posted August 24, 2017 Author Share Posted August 24, 2017 I honestly don't think I have touched my stock plugs with this build. My car only had 28k on it when I did the install, and I've put maybe 15k on it since. Link to comment Share on other sites More sharing options...
pjcampbell Posted November 20, 2017 Share Posted November 20, 2017 Any thoughts on what it'd all handle with 100 octane gas? Link to comment Share on other sites More sharing options...
Casella313 Posted May 31, 2018 Share Posted May 31, 2018 Hey! New here, own an Impreza but would share the same kit as you guys for the install. What mileage is everyone at that owns one? Any more autocross experiences? Thanks! Link to comment Share on other sites More sharing options...
1stick3pedals Posted June 1, 2018 Author Share Posted June 1, 2018 Any thoughts on what it'd all handle with 100 octane gas? Higher octane means you can run more boost. It would come down to the strength of the block and internals. Not sure if there is any research on the forums regarding this. Hey! New here, own an Impreza but would share the same kit as you guys for the install. What mileage is everyone at that owns one? Any more autocross experiences? Thanks! This was my personal thread, so I'm not sure if others are running this kit and are still out there. I have around 15k-20k miles on my car. I don't daily it, but it's still running good. I only did the 2 autoxs years ago, was hoping to start going regularly this year but have a kid coming this month so I might not be able to start until next year. Link to comment Share on other sites More sharing options...
pjcampbell Posted June 2, 2018 Share Posted June 2, 2018 Thanks... I decided to go for it. I've been running a mix of 93+Torco which gets old quick (~100 octane) just to see how it goes. I can hit 10 psi with medium timing no problem with detonation but torco is expensive and annoying. After looking at the Sand rail guys, they say they get 330 (crank) hp out of a stock EJ253 on race gas on a 10 psi turbo on like 110 octane. So I am going to try 10-11 psi on a supercharger with water/meth. IMO the supercharger should be significantly easier on the engine and I may even go 11psi. We'll actually hit 6psi much higher than you hit 6 psi on yours (something like 5000rpm for me). So the load is lower on the motor at least at that point... I am waiting to see if EFI logics will tune it for me. A lot of folks seem to not want to touch it with a 10 foot pole once you get into that much power on a 253. With water/meth it should be easy to avoid detonation. We can pour on the water/meth at like 3500rpm which is still probably only 3 psi. Right now I am trying to figure out where to put the water/meth setup (tank and pump). I just finished oil pressure and AFR gauges in the Ortiz cubby pod which came out real nice. Link to comment Share on other sites More sharing options...
pjcampbell Posted July 27, 2018 Share Posted July 27, 2018 @ 1stick3pedals how high are you revving yours? Link to comment Share on other sites More sharing options...
1stick3pedals Posted September 27, 2018 Author Share Posted September 27, 2018 Thanks... I decided to go for it. I've been running a mix of 93+Torco which gets old quick (~100 octane) just to see how it goes. I can hit 10 psi with medium timing no problem with detonation but torco is expensive and annoying. After looking at the Sand rail guys, they say they get 330 (crank) hp out of a stock EJ253 on race gas on a 10 psi turbo on like 110 octane. So I am going to try 10-11 psi on a supercharger with water/meth. IMO the supercharger should be significantly easier on the engine and I may even go 11psi. We'll actually hit 6psi much higher than you hit 6 psi on yours (something like 5000rpm for me). So the load is lower on the motor at least at that point... I am waiting to see if EFI logics will tune it for me. A lot of folks seem to not want to touch it with a 10 foot pole once you get into that much power on a 253. With water/meth it should be easy to avoid detonation. We can pour on the water/meth at like 3500rpm which is still probably only 3 psi. Right now I am trying to figure out where to put the water/meth setup (tank and pump). I just finished oil pressure and AFR gauges in the Ortiz cubby pod which came out real nice. That's a lot of power on the stock bottom end. Nice. I maxed out at 6.5-7psi when I got a check up tune by Tuning Alliance. I'm pretty sure I need to upgrade my fuel pressure regulator to a 1:1 though. A supercharger would be cool to get on there. That's a high rpm for peak boost though, what are you using the car for? I'm sure a tuner wouldn't mind pushing those levels as much if you have some good knock hardware for monitoring. The gage panel came out nice. @ 1stick3pedals how high are you revving yours? I think my redline was upped to 6500, not that I ever go over 6k. Link to comment Share on other sites More sharing options...
pjcampbell Posted September 27, 2018 Share Posted September 27, 2018 Oh thanks for replying. I don't actually think the bottom end is the issue, just the compression (detonation) and the heat. So with the water/meth injection (which is now installed and up and running but still messing with the tune), I think it's pretty safe. It's my daily driver but I don't drive very much. I'm still tinkering with it. It seems to have settled in around 9 psi @6100, maybe 10 psi if I rev to 6500. I don't think that belt is slipping but need to double check that.. I recently removed the entire exhaust to see what would happen and airflow went up by 30 g/s (about 237 g/s) at ~6200, so I think 230-240whp is possible. Don't think there is much more in it than that though - maybe with custom cams?? Link to comment Share on other sites More sharing options...
BlackTux Posted September 30, 2018 Share Posted September 30, 2018 Wouldn't mind adding a little turbo to my 13 OB 2.5i PZEV 6 MT. Link to comment Share on other sites More sharing options...
pjcampbell Posted September 30, 2018 Share Posted September 30, 2018 can you tune the 2013 in romraider or otherwise? Link to comment Share on other sites More sharing options...
BlackTux Posted October 1, 2018 Share Posted October 1, 2018 can you tune the 2013 in romraider or otherwise? I have no clue. I just got this 2013 1.5 years ago and long it. It could use just a little more pep in it's step. Link to comment Share on other sites More sharing options...
pjcampbell Posted October 1, 2018 Share Posted October 1, 2018 I would look into it, there must be a way to do it. Link to comment Share on other sites More sharing options...
pjcampbell Posted October 3, 2018 Share Posted October 3, 2018 I have no clue. I just got this 2013 1.5 years ago and long it. It could use just a little more pep in it's step. You should look into it over on romraider.com. I am curious too because in the future I am going to want a "bigger-ish" newerish 6 speed wagon not with only 175 crank horsepower. Link to comment Share on other sites More sharing options...
BlackTux Posted October 5, 2018 Share Posted October 5, 2018 I am curious too because in the future I am going to want a "bigger-ish" newerish 6 speed wagon not with only 175 crank horsepower. I understand the OB is NOT the WRX or anything like that, however, it still have most of the same parts. And that is the reason I asked the question. Besides I like my 27 MPG. Link to comment Share on other sites More sharing options...
pjcampbell Posted October 7, 2018 Share Posted October 7, 2018 The 2013 is different since it is an FB motor not EJ motor. It doesn't mean you can't turbo it though! Link to comment Share on other sites More sharing options...
pjcampbell Posted October 7, 2018 Share Posted October 7, 2018 Does anyone know if turbo/super 253 will benefit from forced induction cams? Trying to see what to do to take this to the next level. Really hard to get info about whether it's worth the effort. Some folks on NASIOC thought it'd only be good for 10hp but I doubt many have truly tested this to say so. Link to comment Share on other sites More sharing options...
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