fahr_side Posted July 5, 2013 Share Posted July 5, 2013 Just for comparison, this plot is from an '08 STi pump gas tune I did a few weeks back. It has: EL header Tial 44mm EWG Pierburg EBCS HKS intake Generic TD06SL2-20G 8cm2 800cc injectors Walbro 255 pump Catless TBE The EWG is operated in push-pull mode. With WGDC zeroed out the car made right around 14psi, so we assume it had a 1bar spring fitted to the Tial. In a later revision we held 20psi right to 6k7rpm with just a little more WGDC. I didn't have any problem controlling the boost spike at peak so I didn't ask the owner to go to a hybrid control system. Most interestingly (in your case) it only needed 10% WGDC in the saddle rising to 18% at redline. Compare that with the nearly 80% you have across the board. Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
joeleodee Posted July 5, 2013 Author Share Posted July 5, 2013 ^And that was with the EBCS? This is making me consider trying out some other boost control setups. If my boost tapered less than it is now, I'd be making better power up top as this turbo should. I have all the parts, just replumb and tweak the tune a little bit. Link to comment Share on other sites More sharing options...
fahr_side Posted July 6, 2013 Share Posted July 6, 2013 Yes, that's just with a standard Pierburg 3-port BCS liberated from a Golf GTi. The EWG is plumbed in push-pull mode. Boost control is better than with the owner's previous set up of a V-Pro and EVC-S. I don't have much experience tuning EWG set-ups and was very impressed with how easy it was to dial in. Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
joeleodee Posted July 7, 2013 Author Share Posted July 7, 2013 My boost is extremely predictable. I bumped it up to about 22psi peak today and the curve ALWAYS looks exactly the same. Taper by about 4.5-5psi. Interesting thing, though. As my boost is increasing, the vehicle isn't responding as much to turning up the mbc. For instance, it took 8 clicks on the mbc to raise boost by .5psi. Technically, each click on the grimmspeed mbc represents .25psi. Maybe it had something to do with hot lapping in the 80° weather between pulls. Everything else looks fine. My fueling is still pretty flat. There just seems to be something holding this setup back. Timing maxes at 23° to redline, AFRs are at mid 11s or so, and boost peaks at 22psi. VD is only showing about 350whp. I expected high 300s to low 400s in the VD whp numbers on e85 with these readings. Besides switching the intercooler, there's one more possibility that could be bottle necking the air movement. Link to comment Share on other sites More sharing options...
fahr_side Posted July 7, 2013 Share Posted July 7, 2013 Perhaps you can try Strizzy's suggestion of swapping the spring in the MBC for a stiffer one. Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
joeleodee Posted July 7, 2013 Author Share Posted July 7, 2013 It was actually suggested by someone local to run a higher spring pressure in the ewg. Can't hurt. Wonder what spring pressure is recommended? I've got the 11.6 in right now. Maybe I'll do that when I do the intercooler. As for the mbc, I don't think there is a spring swap for the GS Link to comment Share on other sites More sharing options...
fahr_side Posted July 7, 2013 Share Posted July 7, 2013 It was actually suggested by someone local to run a higher spring pressure in the ewg. Can't hurt. Wonder what spring pressure is recommended? I've got the 11.6 in right now. Maybe I'll do that when I do the intercooler. As for the mbc, I don't think there is a spring swap for the GS As a rule of thumb you will be able to reach a boost level about double the pressure the WG spring is set at. If you're going to run to 23psi I'd recommend a 1bar spring or preload the spring you have to crack the gate at 1bar. Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
Scooby2.5 Posted July 7, 2013 Share Posted July 7, 2013 Usually you set the AVO WG to 15lbs which is basically as fahrside suggested. If you didn't get that FMIC on your car yet you are choking that Garrett 3.0 That was a lot of the problem with SOME of the other AVO turbos. That legacy top mount is worthless for making power Link to comment Share on other sites More sharing options...
joeleodee Posted July 7, 2013 Author Share Posted July 7, 2013 ^I don't have the lgt top mount. I have the Racer X fmic. Also, I was thinking that something else that's could be a limiting factor in this setup. I posted about it HERE some months back. Link to comment Share on other sites More sharing options...
joeleodee Posted July 9, 2013 Author Share Posted July 9, 2013 The AVO FMIC arrived today. Interesting surprise. I didn't know it was available in stealth black. I'm okay with that. http://i108.photobucket.com/albums/n29/joeleodee/IMAG0490_zps7ac05477.jpg Link to comment Share on other sites More sharing options...
Strizzy Posted July 9, 2013 Share Posted July 9, 2013 Mine was silver, but I painted it matte black. I don't like advertising that I'm about to rip your doors off. FYI: If you decide to change out your turbo for a regular (non-LGT flange) turbo, you can clock the compressor housing so the outlet is straight up and use the 90* elbow direct to the turbo. Though, that only works if you are EWG (which you already are). The silicone pipes also make it extremely easy to fab up piping for a NA manifold and rotated mount turbo. (not trying to put bad ideas in your head. Though, a GTX3071R would be a killer DD stock location turbo). My bad luck build Link to comment Share on other sites More sharing options...
joeleodee Posted July 9, 2013 Author Share Posted July 9, 2013 DAMMIT STRIZZY!!! Why must you say those things? Link to comment Share on other sites More sharing options...
Scooby2.5 Posted July 9, 2013 Share Posted July 9, 2013 Mine is silver and my bumper is silver. Hard to tell its even in there Link to comment Share on other sites More sharing options...
joeleodee Posted July 9, 2013 Author Share Posted July 9, 2013 Yeah, that would blend in. The silver under my Regal Blue would stand out pretty significantly. I content with keeping a lower profile. Link to comment Share on other sites More sharing options...
Strizzy Posted July 9, 2013 Share Posted July 9, 2013 I like lower profile http://www.strizzyphoto.com/Other/Subaru/i-84PZcNL/0/S/IMG_6812-S.jpg You can sell your barely used AVO turbo, then purchase a nice GTX turbo with baller bearings, less lag, more boosts, and bigger smiles. And if you end up needing a larger intake (83mm) or inlet (Perrin 3"), I already have the parts sitting on a shelf, ready to be given up for a great deal. My bad luck build Link to comment Share on other sites More sharing options...
joeleodee Posted July 24, 2013 Author Share Posted July 24, 2013 FML. I began installing my intercooler today. I got some trimming done and the core mounted, but ran into a pretty big problem when I started to attach the hoses. It became apparent pretty quickly that I was sent the wrong intercooler core. Take a look. This is the size that it's supposed to be. http://www.avoturboworld.com/images/stories/07_press_release/07PR_bp_leg_fmic/fmic_measurements.jpg This is mine. For reference, the one sent to me is 20"W, 9" H, 2.5" D. Significantly smaller than what is described above and actually the exact same size as the RacerX FMIC I'm replacing. Needless to say, the hoses will not mount properly so I'm going to have to get a hold of AVO about this. Wish me luck. http://i108.photobucket.com/albums/n29/joeleodee/IMAG0492_zps34444114.jpg?t=1374690571 Link to comment Share on other sites More sharing options...
Strizzy Posted July 24, 2013 Share Posted July 24, 2013 I didn't even bother with trimming my bumper beam. I just removed it. Hopefully you get the core issues sorted out My bad luck build Link to comment Share on other sites More sharing options...
joeleodee Posted July 24, 2013 Author Share Posted July 24, 2013 I didn't trim the bumper beam yet. Well, I guess I have time to now since I'm pretty much at a stand still and at the mercy of AVO getting back to me in a timely fashion. Link to comment Share on other sites More sharing options...
Strizzy Posted July 24, 2013 Share Posted July 24, 2013 AVO was pretty quick to respond when I had some questions/issues. Did you contact the AVO vendor here on the forum? My bad luck build Link to comment Share on other sites More sharing options...
joeleodee Posted July 24, 2013 Author Share Posted July 24, 2013 I've called direct so far, but I'll link them to this thread. Good call. Link to comment Share on other sites More sharing options...
Scooby2.5 Posted July 25, 2013 Share Posted July 25, 2013 I didn't even bother with trimming my bumper beam. I just removed it. Hopefully you get the core issues sorted out Hope you don't get in a wreck. I got the AVO so I would HAVE the beam Sent from my iPhone using Tapatalk 2 Link to comment Share on other sites More sharing options...
Strizzy Posted July 25, 2013 Share Posted July 25, 2013 If I ever get into an accident, the bumper beam isn't going to do much for me anyways There probably won't be much of a car left, either. My bad luck build Link to comment Share on other sites More sharing options...
joeleodee Posted July 26, 2013 Author Share Posted July 26, 2013 I've been in contact with Paul from AVO. He's located a replacement part and is going to get it shipped out to me tomorrow. Link to comment Share on other sites More sharing options...
joeleodee Posted October 9, 2013 Author Share Posted October 9, 2013 Haven't updated in a while. Car runs with no issues and I have a bunch of intercoolers. That's another story. Anyway, seeing if anyone has any ideas. With the setup I'm running, I should be making a lot more power. I've seen smaller turbos put up bigger numbers on E85 than what my VD plot is showing. I'm running a little lean at WOT so I'll look into that, but here's a 3rd gear pull to 6k with the respective VD graph to accompany. I personally think that running 23lbs of boost on E85 should show north of 400whp on my setup, but take a look and let me know if you see anything amiss. I understand that it's just numbers, but I've seen a 20g making 432 whp, an HTA68 and an AVO380 at 380whp,and even some vf39s with 360whp all on E85 ran through VD software. What am I leaving on the table?romraiderlog_20131005_191832.csv Link to comment Share on other sites More sharing options...
spec.B Dream Posted October 10, 2013 Share Posted October 10, 2013 http://legacygt.com/forums/showpost.php?p=1018529&postcount=28 http://legacygt.com/forums/showthread.php/read-compressor-maps-55147.html (14.7+23)/14.7 = 2.56. This is about 38 lb/min at the top of the highest efficiency island, roughly 380 whp based on the links above. So, you're running right at peak efficiency. Now, we're not at sea level, and our atmospheric pressure is usually a little less than 14.7, so you're probably already pushing above peak efficiency. That is not necessarily an absolutely bad thing, and you can get more out of it by pushing boost above peak, but it is up to you to determine how for to go with boost. You have a good intercooler, so you don't have to worry as much about the extra heat. Link to comment Share on other sites More sharing options...
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