So everything has been going fine with my set up these past couple days. But, out of nowhere I notice that my W/M pump was not being triggered under set boost; which I have set at around 8-9psi. Checked wiring, tested it in test mode and the solenoid clicks and all. So power to the pump was GTG. Keep assessing the situation, and decided to check what boost levels my CAN tool was picking up. Turns out no Boost. Also noticed less of the blow off noise from my intake.

So I kept diagnosing with my Dash Command Ap. Boost levels low, 3-4psi at the most. All other gauges normal. Car runs normal, except no extra get up and go due to lack of boost. No CEL. No Blow off sound. Checked all boost tubes to include all tubing for my Forge DV, nothing loose.

So next option is to open up the DV, and check the spring. Question is, what am I actually looking for. It is brand new. Ran great since install.

Wondering if anyone has experienced this before. All I seem to find are threads on Boost cuts and tuning issues. This seems more mechanical.

Thanks...

 

Are you using the Sprint Booster? Is it broken?

 

Sprinter Booster was off when I noticed this issue. Turning it on allows to rev faster, but still no boost.

It was storming so can't get into the DV until tomorrow. Hoping that is the issue and nothing in the turbo itself...

 

Any luck? No CEL right? Log throttle position with DashCommand and see it is goes up to wide open which is ~85%.

 

Had to take a break from the R56 today. Instead, enjoyed driving around town in the Wifey's Countryman.

Never thought about the throttle test. I'm going to hook up my Scangauge and test it.

Thanks...

 

I'm guessing W/M pump stands for water/meth pump correct? As for GTG I have no clue?

What solenoid are you referring to? I have had no issues with my Forge DV since September 2013, note that at least the Forge DV is quieter than the stock DV, I to once thought I was getting no boost because the Forge DV doesn't waste boost pressure like the stock DV making it quieter. Sorry for confusion.

 

So here is the latest and greatest,

First off I'd like to thank Cerenkov and Systemlord for chiming in and trying to help a fellow NAM member out.

Cerenkov, I checked the TPS and throttle is being read at 85% WOT. I tested with and without the Sprint Booster attached.

MINI revs throughout all shifts but with little power. I feels as if in Limp Mode, but without the CEL.

However, when I uninstalling the Sprint Booster, I reattached the stock throttle plug, started the engine and the "Engine Operating on Low Power" message was displayed on the monitor, but still without any CEL.

I checked for Codes, none found except the no CAT code, due to my DP. I cleared all codes just in case; with the Dash Command and the BMS CAN Tool. Still no boost.

Systemlord, I know it has something to do with the Forge DV, because before this issue, I would hear the "Pshhh" sound when shifting. I was running the DV for about a month, before installing the W/M (Water/Meth) Kit. The solenoid I was referring to is part of the W/M kit. It would click right before the pump was triggered under 8psi boost. That's how I knew there was a boost issue.

So new findings are:

• No Boost (Feels as MINI is in constant Limp Mode)
• The MINI drives normal, except for a backfire like sound when letting off the throttle, and there is a fluttering sound in the intake instead of the Pshhh like before the boost issue.
• Opened up DV (Spring and all in tact) Not sure what else to check in there?
• Disconnected the Boost Tap from W/M kit (In case it was the culprit, no change in Boost)
• Sprint Booster and JB+ uninstalled (No improvements)
• all boost tubes/hoses are in tact.

What am I missing, where should I be looking. Im about to take it in to dealership, but will have to rip out the W/M kit I installed first. I am dreading there findings. And feel they will blame my basic mods that should not have effected the engine or DME. Except maybe the Forge DV.

Sorry so long, but really need some input. especially if any had issues with Diverter Valves causing similar symptoms.

Thanks...

 

My dealer is aware of my Forge DV, they even asked me about it after they took the transmission off the car, they didn't seem to mind after I told them it wasn't the BOV type.

What about that plug that connects from the ECU to the electronic solenoid for the Forge DV? If that wasn't sending a signal to the ECU that would explain the limp mode and lack of Cel, do you have the stock DV? Check the vacuum lines for the Forge DV.

 

I disconnected that plug and reconnected to make sure it was not loose. How do I check if it's still sending a signal?

Today while test driving, the Low engine power message came on twice when I got up near 4000 rpm. Im getting to the point where I don't want to drive it. Going to op for the stock DV tomorrow as a last result

 

I had very similar issue with my N14. It was due to the catless DP. That problem was fixed when I got my tune. It didn't happen right away either. It was about a week after I installed the DP. But the only thing in the system was the p0420 code. My guess is, the system is trying to save itself and the turbo because it thinks the cat is bad.

This issue does not happen very often but there have been a few others that had this issue when having a catless DP without having a tune to cover the code up

 

Hmmm. It has never been an issue before. Been running my Catless DP for couple months now. However, it is the only permanent code that is tracked. My CAN tool deletes and prevents the CEL from coming on. Only time I see the CEL is if I drive around without the CAN tool like when running my Dash Command.

I also had the Battery disconnected for over 24hrs. Would that not reset the DME, and allow all to run normal, until I drove around for a few miles? The fact that it acted up immediately upon reconnecting the battery tells me it's something mechanical...

 

The only way to know for sure is install a stock DV, unless Forge has any other ideas. You might send them an email or call.

 

Again broken "tank air valve 13537543285(TAV) " or "Pressure converter 11657599547(PC)"?? Could be electronically ok , but mechanically bad, no CEL.Leaking boost to tank(TAV) or controls the boost pressure wrong(PC),for example waste gate control/timing.

 

Mission Success...

My R56 is back and running strong. So, it turns out that the Forge DV, was stuck. Looks like it needed more lube. I had to force it open with my finger, so Im sure there was not enough PSI to allow the spring to open, whether electronically, or mechanically. Once I reinstalled stock DV with the upgraded Alta spring (Due to my misplacement of the stock spring, LOL), my MINI was back in action. Boost back up to 12-14psi, in 80deg ambient temps. This is w/stock tune, no JB+ yet. I also feel that the Alta spring holds boost just as well or even better than the Forge DV, prior to LIMP Mode.

So next step is to reinstall the JB+, time now. Let it break in for prescribed 50 miles. Im running it at 50%, don't even want to bother turning up the dial anymore. Once all feels right, I will reconnect boost tap for the W/Meth controller, and let the good times role.

If all runs well for next couple weeks, I will continue on with build.

I wanna thank all who chimed in and offered input and support.

Lesson learned, insure you lube your Forge DV extensively IOT prevent it from sticing and causing your DME to trigger Limp Mode

Lastly, Im stuck with a $200 dollar plus Forge DV, that I don't want to reinstall, but is available for Best Offer if anyone wants to run this, and has the patience, knowing they need to BPT uninstall lube and reinstall in the event it will stick again. Check the MINI for sale threads.

ROXSPIN Out...

 

Hooray!

 

Excellent, although I believe it's rare for the Forge Valve to get stuck a second time. I have had no issues for at least 8+ months, perhaps a freak event. Glad to hear you got it all figured out.

 

Probably was a freak event. But it only happened once, I think... 1st time I only removed the outer portion which holds the spring. This time I removed whole assembly and replaced with Stock DV w/Alta Spring.

I think this may have been an issue for sometime, but only recently caused the DME to trigger Limp Mode. My MINI is running like a Beast Might be that I have had no boost for over a week, but seriously, I have been chirping the tires in Second and Third gears. Pulls way harder than before, especially now that I have driven over 50 miles with the JB+. I Have it set at 12 O'clock position, and its like a whole new tune. I don't even miss the Sprint Booster. Cant wait to see how everything runs when I hook the Water/Meth controller back up. Should be all smiles from here until MANIC Tune is on order