good afternoon. I just recently replaced my charge pipe with the NM pipe eliminating the noise maker. I replaced the hot side with the NM discharge pipe this past summer. I am running the stock intercooler. I just came to a rolling stop, taking off again in first gear and noticed the car sort of stutter a bit. I don't believe it was a bouncy foot. Could this be due to to much air flow from the boost tubes? I never felt it before. I will check the clamps to make sure everything is still tight. Once I parked the car, I revved the motor a bit and noticed a smell i've never noticed before too. Hard to say what it was.

Thanks.

 

How many times has it happened? What does it smell like? For sure check the clamps.

 

Today was the first time I experienced that. The smell..... hmmmm, sort of a burnt smell.

 

Was the engine fully warmed up when it happened? Did the sound of the car change when it hesitated (become muffled, make a growling sound, rattle, etc)?

 

No odd sounds at all. Engine was completely warmed up. Going to check the clamps shortly. maybe I had a bit of air escaping. Maybe it was a fluke.

 

When you said burnt smell are you talking oil or electrical?

 

Have you hooked up a MINI-approved scanner to the ECU to see there's no obvious fault codes present?
This can eliminate much of your search is there is a 'current' problem spotted by the ECU.

No. There's so many active sensors watching for proper fuel trim, pressure readings, and throttle position that it's not from a changed pipe.

- Erik

 

I'm thinking more of an oil smell. It was definately coming from under the hood.

 

That sounds more like an unrelated issue to your boost hoses.
Time to inspect for fluid leaks, especially around the valve cover and the timing chain tensioner bolt.

- Erik

 

No oil leaks present as far as the eye can see. Timing chain tension bolt has been done twice. Could've been an odor coming from the exhaust too as I was trumping on the gas. So easy to mistake where something could be coming from.

 

Wouldn't I have a CEL present if I had any fault codes?

 

Not necessarily; there can be present faults without a CEL illuminated.

- Erik

 

Did you check the hoses yet.

 

I did check the hoses. I tightened everything up. I believe it was just a fluke. I did however order an ODBII tool to see if I have any error codes.

 

Cool. You know it is pretty cheap if ypu a Bluetooth one.

 

I am experiencing the same exact hesitation issue on my 2009 JCW. Noticed it after installing the NM cold side charge pipe. Have not noticed a smell.

Did you have any fault codes? Have you resolved the hesitation?

 

First thing, double check your hose clamps and make sure they are all tight. That is about the only real issue you would ever have with hot or cold tubes. Make sure there isn't an air gap. Early on after I installed them I had one end of mine pop off after hard acceleration. It bogged the car down. I reseated the fitting and made sure it was tight and all was good.

-Z

 

Amazing that you answered a year-long dead thread... Glad that you got an answer.

 

I checked & tightened all hose clamps last night and after driving the car today I had the same issue.

I notice it on long pulls in 4th and 5th gear once the turbo spools. I hear a clicking sound and the car hesitates. It usually only happens when the car is warm, and it seems to happen intermittently. I have no CEL.

I did notice a small amount of oil on the garage floor, but I don't know how it could be related.

Not sure what it chase down next

 

Did you knock something else off or loose when installing the pipe?

 

I checked all hose clamps yesterday, moved the air box around to see if i could find anything loose, and I could not find anything.

Since I tightened the hose clamps on the NM Cold Side pipe the hesitation does seem to be less frequent, but does still occur occasionally.

Not sure where else to check or what else could be loose.

 

My cold side boost came completely loose once where it connects to the intercooler. When it happened there was a backfire type noise the car feel on it's face and I lost all power (as you would expect). I did not get a CEL until I turned of the car and restarted it. I reattached the tube and the CEL cleared by itself after driving 2 miles and restarting the car.

I still think you have a boost leak, I don't believe in coincidences. You can always swap back to the OEM and see if you still have the problem.

 

I completely removed the airbox and cold side boost tube, cleaned everything, and very carefully put it all back together. I also checked all the other turbo and air box plumbing and everything is tight.

I'm still having the same issue…

When I am in 4th or 5th gear around 3k rpm and attempt to accelerate hard, I hear a clear clicking noise (like a solenoid firing) and the car hesitates.

It happens intermittently but fairly frequently.

Today it did it with the traction control on and off.

Car runs very strong, idles good, and accelerates hard when not stuttering.

Any other ideas?

 

Maybe a faulty diverter valve.

 

Is the diverter valve different from the bypass valve/BOV?

Installed a Forge BOV yesterday hoping that might solve the issue...still having the same problem.

I did notice on the back of the intake manifold what appears to be a hose connection with nothing connected. Can't find any hose anywhere that is loose. Is something supposed to be connected here (see picture)?