tour80 Posted October 18, 2015 Share Posted October 18, 2015 I'm having an odd issue with my Cobb AP not reading Boost figures correctly. 1st I data logged a few weeks back and just did a quick pull in 2nd. All of the numbers looked ok, boost readings were around 11 PSI. 2nd Had my ECU and Fan relay replaced by Subaru last week. The car drives fine and feels just as quick as before however my Cobb AP Boost readings are incorrect. Here are some boost figures from a 3rd gear pull under WOT: -0.1; 0.02; -0.07; 0.15; 0.07; -0.1 The figures are not correct but the car is boosting fine, no hesitation of any kind. I have checked the map sensor connection and it all looks fine, not disconnected or anything like that. Any suggestions? Link to comment Share on other sites More sharing options...
battelready Posted October 19, 2015 Share Posted October 19, 2015 I'm having an odd issue with my Cobb AP not reading Boost figures correctly. 1st I data logged a few weeks back and just did a quick pull in 2nd. All of the numbers looked ok, boost readings were around 11 PSI. 2nd Had my ECU and Fan relay replaced by Subaru last week. The car drives fine and feels just as quick as before however my Cobb AP Boost readings are incorrect. Here are some boost figures from a 3rd gear pull under WOT: -0.1; 0.02; -0.07; 0.15; 0.07; -0.1 The figures are not correct but the car is boosting fine, no hesitation of any kind. I have checked the map sensor connection and it all looks fine, not disconnected or anything like that. Any suggestions? Reinstall your cobb. Perhaps subaru hooked up their computer to it. I bought an auto be more involved in my uninvolvedness . 200k+ Club If you can't blind them with brilliance, baffle them with bullshit. My high mileage turd. Link to comment Share on other sites More sharing options...
tour80 Posted October 19, 2015 Author Share Posted October 19, 2015 Reinstall your cobb. Perhaps subaru hooked up their computer to it. It wasn't installed in the first place. Actually it is still married to another car and needs to be relicensed. It read all data fine prior to the ecu swap. I wonder if subaru decided to upgrade my ecu to an 07-08 one? I may need to check the model # Link to comment Share on other sites More sharing options...
battelready Posted October 19, 2015 Share Posted October 19, 2015 It wasn't installed in the first place. Actually it is still married to another car and needs to be relicensed. It read all data fine prior to the ecu swap. I wonder if subaru decided to upgrade my ecu to an 07-08 one? I may need to check the model # They wont just upgrade the ecu , knowingly at least. The newer ones have the si drive and fancy stuffs. But can you read any other data. Also what ver cobb is it , v2 or v3. Also assuming you have an 05. I bought an auto be more involved in my uninvolvedness . 200k+ Club If you can't blind them with brilliance, baffle them with bullshit. My high mileage turd. Link to comment Share on other sites More sharing options...
tour80 Posted October 19, 2015 Author Share Posted October 19, 2015 They wont just upgrade the ecu , knowingly at least. The newer ones have the si drive and fancy stuffs. But can you read any other data. Also what ver cobb is it , v2 or v3. Also assuming you have an 05. 05 LGT Manual using the cobb ap v2 sub002 The other parameters like rpm, wg duty cycle seem to be in line with what i logged a few weeks back. Link to comment Share on other sites More sharing options...
quick4dr Posted October 19, 2015 Share Posted October 19, 2015 Check your map sensor connection that's where the Ecu gets psi from Link to comment Share on other sites More sharing options...
tour80 Posted October 19, 2015 Author Share Posted October 19, 2015 Check your map sensor connection that's where the Ecu gets psi from Connection seems to be good...first thing I checked Link to comment Share on other sites More sharing options...
tour80 Posted October 20, 2015 Author Share Posted October 20, 2015 I have emailed Cobb to see if they have seen this before. Link to comment Share on other sites More sharing options...
5thElement Posted October 20, 2015 Share Posted October 20, 2015 Can the AP even connect to another vehicle if it is married to another, I thought it couldn't? Link to comment Share on other sites More sharing options...
tour80 Posted October 20, 2015 Author Share Posted October 20, 2015 Can the AP even connect to another vehicle if it is married to another, I thought it couldn't? I am/was able to connect and data log even though it is married to an 06 wrx. I can't tune or anything like that though. Link to comment Share on other sites More sharing options...
battelready Posted October 21, 2015 Share Posted October 21, 2015 I have emailed Cobb to see if they have seen this before. They're gonna tell you to marry it to the car. See if you can either get a obd scanner or one of those bluetooth obd dongles to read the boost, This way you'll know if its the car or the cobb. I bought an auto be more involved in my uninvolvedness . 200k+ Club If you can't blind them with brilliance, baffle them with bullshit. My high mileage turd. Link to comment Share on other sites More sharing options...
tour80 Posted November 12, 2015 Author Share Posted November 12, 2015 So I finally checked on my new ECU and this is what I found: Old ECU: 7Y 22611AJ17B TN112200-6815 New ECU: 7Y 22611AJ17E TN112200-6818 I'm guessing this is probably why I'm having an issue. Link to comment Share on other sites More sharing options...
zisforzachary Posted December 17, 2015 Share Posted December 17, 2015 did you ever solve this mystery? Link to comment Share on other sites More sharing options...
tour80 Posted December 18, 2015 Author Share Posted December 18, 2015 did you ever solve this mystery? Negative... I'm getting a boost gauge soon and that may clear things up a bit. I'll post more then Link to comment Share on other sites More sharing options...
tour80 Posted December 22, 2015 Author Share Posted December 22, 2015 Boost gauge installed 19 - 21 inHg at idle/coasting 11 psi at full boost, solid and holds until redline I've read that it should be making about 13.5...any thoughts? Link to comment Share on other sites More sharing options...
solidxsnake Posted December 23, 2015 Share Posted December 23, 2015 Do you have SI-Drive on your car? If so, what modes are you in? Does it change whether you're in I vs S vs S#? Link to comment Share on other sites More sharing options...
tour80 Posted December 23, 2015 Author Share Posted December 23, 2015 Do you have SI-Drive on your car? If so, what modes are you in? Does it change whether you're in I vs S vs S#? Nope...it's just an 05 with a manual Link to comment Share on other sites More sharing options...
05legacygtr Posted January 30, 2016 Share Posted January 30, 2016 Nope...it's just an 05 with a manual What elevation are you at? Sent from my SAMSUNG-SM-G920A using Tapatalk Link to comment Share on other sites More sharing options...
tour80 Posted February 1, 2016 Author Share Posted February 1, 2016 What elevation are you at? Sent from my SAMSUNG-SM-G920A using Tapatalk About 700 feet or so Link to comment Share on other sites More sharing options...
05legacygtr Posted February 11, 2016 Share Posted February 11, 2016 About 700 feet or so Well then I have no idea. What did Cobb say? Does your AP have all its updates? Sent from my SAMSUNG-SM-G920A using Tapatalk Link to comment Share on other sites More sharing options...
tour80 Posted February 11, 2016 Author Share Posted February 11, 2016 Well then I have no idea. What did Cobb say? Does your AP have all its updates? Sent from my SAMSUNG-SM-G920A using Tapatalk Cobb didn't have too much to add and the unit was fully updated. It probably has something to do with the ECU being replaced (different model #) but I'm not 100% sure. Anyhow I ended up selling the Cobb and will probably just look into a custom tune down the road. Link to comment Share on other sites More sharing options...
tour80 Posted March 23, 2016 Author Share Posted March 23, 2016 Quick update...I ended up selling the V2 AP and got a good deal on a V1 from Cobb. After flashing the car to Stage 1 everything seems to be working fine, car is boosting 14-15 psi. So to close this out I'm guessing it had something to do with the fact that the V2 was married to another vehicle. That's as good of an answer as I have Link to comment Share on other sites More sharing options...
joeleodee Posted March 24, 2016 Share Posted March 24, 2016 You mean v3 since the v1 hasn't been available for several years now? Link to comment Share on other sites More sharing options...
tour80 Posted March 25, 2016 Author Share Posted March 25, 2016 You mean v3 since the v1 hasn't been available for several years now? V1 used Link to comment Share on other sites More sharing options...
Thinking out side box Posted March 31, 2016 Share Posted March 31, 2016 :lol::lol:;);)I try not to change more then one major variable at the time, thus I tested AVCS first then mocked with timing. I have tried running 20 AVCS and 35* timing, which didn't seem to help, but I tested it on a one way trip. With this car I've noticed the only accurate way to test MPG's is going to the same exact city consistently and long one way fill trips are to be taken with a grain of salt. Link to comment Share on other sites More sharing options...
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