Stew3223 Posted September 25, 2013 Report Share Posted September 25, 2013 Hello all, I just got my VPS2 plug in board installed yesterday in my V2 ('96) WRX. I performed all pre-start checks and started the engine with no issues. Drove around for a bit tinkering with base fueling and then brought the car back home. Sitting in the garage playing around at Idle, I noticed that BAP had crept up to ~108 kpa. when I did the MAP sensor calibration before starting everything seemed normal (BAP=101, MAP=100.5). I currently DO NOT have an IAT sensor configured (on my to-do list) and the car isn't fitted with one from the factory (no IAT integrated into MAF sensor). I have not changed the Barometric sensor configuration either, its still set to "Standard". What could cause BAP to slowly increase as the engine is running? If its an internal Baro sensor, shouldn't it be constant? Any help is appreciated. Regards. Quote Link to comment Share on other sites More sharing options...
Simon Posted September 25, 2013 Report Share Posted September 25, 2013 Check what the MAP is reading at key on engine not running. If it matches the baro then it is likely atmospheric changes (however rather large one) If Baro is out compared to MAP then we do have an issue that will need investigation. Quote Link to comment Share on other sites More sharing options...
Stew3223 Posted September 26, 2013 Author Report Share Posted September 26, 2013 Check what the MAP is reading at key on engine not running. If it matches the baro then it is likely atmospheric changes (however rather large one) If Baro is out compared to MAP then we do have an issue that will need investigation. Today when I started the car MAP=100 and Baro=96. As the car idled and warmed up I played around with some ISC settings and tip in enrichment. Within a span of ~10-20 min Baro crept up to ~104.5kpa. This, in my opinion, is absolutely NOT a real change in atmosphere. Here in Michigan, Baro is usually ~99kpa. 1-2kpa change is more reasonable....6-10kpa? no way. I spoke with my distributor today (Innovative Tuning in New York) and ordered the expansion connector so I can configure my IAT sensor. After this, if the issue is still present we'll have to proceed with further investigation. Should I log this and send it along? Thanks! Quote Link to comment Share on other sites More sharing options...
Simon Posted September 26, 2013 Report Share Posted September 26, 2013 Yep that is not at all what I would expect to be seeing. It would be worth checking the ECU internal voltages through the runtimes screen (F12) Quote Link to comment Share on other sites More sharing options...
Stew3223 Posted September 27, 2013 Author Report Share Posted September 27, 2013 Simon, If I check the internal voltages, what should I expect to see for BAP? I tried to upload a log however it wouldn't allow a .llg file. Thanks, Quote Link to comment Share on other sites More sharing options...
Stew3223 Posted September 27, 2013 Author Report Share Posted September 27, 2013 I just went to go look at the runtime voltages. Didn't see a list of internal voltages... I did however notice that without the engine even running (Key on, engine off, ECU initialized) that Baro crept from 99-102 in the span of ~2 minutes... Definitely seems like something is wrong. Quote Link to comment Share on other sites More sharing options...
Sutkale Posted September 27, 2013 Report Share Posted September 27, 2013 How´s your +14 voltage acting? My V88 sometimes starts to see +24 volts and that makes the baro to jump even to 105 kpa. That´s 100% sure there is not +24 current flow to ECU. Quote Link to comment Share on other sites More sharing options...
Stew3223 Posted September 27, 2013 Author Report Share Posted September 27, 2013 Here's a screen shot of my runtime values from last night. Battery voltage has been ~13.4-13.7 Quote Link to comment Share on other sites More sharing options...
Simon Posted September 29, 2013 Report Share Posted September 29, 2013 That looks as expect. I think we need to get the unit back to test and fix. Quote Link to comment Share on other sites More sharing options...
Stew3223 Posted September 30, 2013 Author Report Share Posted September 30, 2013 That looks as expect. I think we need to get the unit back to test and fix. Simon, How can we arrange this as soon as possible? I've got a rally on the 16th of October I'm preparing for. Do I deal directly with you, or should I contact my dealer? If you can, reach me directly with email - [email protected] Thanks, Quote Link to comment Share on other sites More sharing options...
Stew3223 Posted October 8, 2013 Author Report Share Posted October 8, 2013 Simon, The new unit arrived this morning. Two things: - Shockingly fast shipping/service. Thank you sooo much for promptly addressing my issue and providing the replacement unit without a hassle. - The new unit is installed and working perfectly. Also Kudo's to your Distributor Innovative Tuning. Mike and Ian we're great to work with as well. Thanks again! Quote Link to comment Share on other sites More sharing options...
Simon Posted October 11, 2013 Report Share Posted October 11, 2013 Pleased to hear it resolved the issue. Quote Link to comment Share on other sites More sharing options...
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