2013 Genesis Coupe - 2.0T: BOV Issue
It's been a while since I've last posted, and after many recent nights of researching and searching the forums I am breaking down in order to ask some questions about a big issue I'm having with my current setup. (Listed below)
2013 GC 2.0T Base
SFR 1.5 93+ Canned Tune
K&N Typhoon Intake System
ISR 02/DP/TP/3" straight pipe/Stock Muffler (changing to CBE soon)
Treadstone IC Hardpiping (Stock Intercooler)
Synapse V3 Synchronic BOV (Stock Boost Control Solenoid)
Dual Catch Cans
Ever since the cold snap(s) that have have hit my area (Houston TX) lately, I have been experiencing issue with my BOV. The issue manifests itself as the BOV not actuating or not expelling excess boost off-throttle, or actuating late off-throttle. The same issue happened last year around this time, and my friend and I messed with my Synapse BOV until it was basically unusable. By that I mean that I lubricated it with an oil that made the o-rings swell, and not knowing about rubber o-rings and their vulnerability to petroleum based lubricants, made everything worse. I ended up buying another Synapse V3 BOV and upon installing it the problem was gone. Fast forward a year later and here we are now. The same issue has presented itself on another brand new Synapse V3 BOV,.
I noticed it when I was driving on the highway the other day, in which I would periodically accelerated and what not, and I noticed that the car felt like it had no power. I payed attention to the gauges on Torque Pro and noticed that the car was venting all boost above 10 PSI. I ran a fault code analysis and saw that the P2261 (Turbo/Supercharger Bypass Solenoid Malfunction) code was stored, so when I got to school I check all my vacuum lines running to the stock Boost Control Solenoid, and I didn't see anything out of the ordinary. So I cleared the code and went about my business. Later that day, I tested the car and it made full boost, running great. I then needed to drive home on the highway, and noticed that the car would make and hold max boost, but upon letting off the throttle, I noticed a horrible fluttering coming from the passenger side. I listened carefully and noticed that even on low load, light throttle, when would let off that the BOV was not actuating and the turbo was fluttering. Horrified, I babied it home and took off the BOV. I disassembled it, cleaned all the components with paper towels, and lubricated it with high quality spray silicone (as per Synapse Help Desk FAQ). When I installed the BOV back on the car, and test drove it, I was pleased that it ran great. No problems with the BOV consistent and instant actuation of the BOV every time I let off throttle.
Finally, a day later, when driving on the highway I noticed the same issue - no BOV actuation, except this time I was able to hold boost above 10 PSI so I know the ECU was not tripping into limp mode like last time. I ran another fault code analysis and noticed that there was no trouble code stored. Perplexed, I babied the car home again, and check all the vacuum lines running to the stock Boost Control Solenoid, Intake Manifold, and BOV. Nothing seemed awry, and the BOV was well lubricated and moving smoothly. At this point the only thing I can imagine is that the Boost Control Solenoid is stuck closed, and not allowing vacuum from the Intake Manifold vacuum storage tank to be routed to the BOV and open it. Thinking this may be an issue, I checked voltage at the Boost Control Solenoid with key-on, and saw 12-13.8V (charging/alternator voltage). Next I pulled this solenoid off and tested for continuity, which passed, and then measured the resistance, and saw that the reading was 30 Ohm, which is within factory spec (28-31 Ohm).
Now I am lost, I don't understand what could be causing the BOV to stay closed off throttle unless the Boost Control Solenoid was stuck. Can anyone help me figure this out?
2013 2.0T - 8AT
Base, Platinum Metallic
Throttle Body Bypass - K&N Typhoon Intake System - ISR 02/DP/TP/3" Straight pipe to stock muffler (No res)- Treadstone IC hardpiping (stock IC) - Synapse Synchronic V3 BOV (Running with stock solenoid) - SFR 93+ Stage 1.5 Canned Tune - NGK 2309 Colder Plugs, Gap: 0.030" - Dual Oil Catch Cans (IM Side & TB Side) - Rotella T6 5W-40 Synthetic Oil (OEM Oil Filters) - OEM DRL Foglights (see my thread for more info)
Last edited by MG93; 11-19-2018 at 01:36 PM.