[Noir]

Originally Posted by Xencer

After I installed the MILVs and flashed the BPC tune I have been having reduced power at WOT. At about 40% throttle my car has great torque and it pulls hard, but if you push the accelerator pedal any further, the engine bogs down and revs slower and has less power. I have the same issue after resetting the throttle adaptation values. I can flash the back up DME file and the car runs fine, just a little disappointed that BPC will not look at the tune file again for me after $750 spent, and they'll charge me again to dyno the car to figure out what is wrong with the tune. I'm just gonna go with AA products from now on.

10/10 Bob will coordinate with you...
He takes some time to get back to me, but he usually does within 24 hours.
I agree with Hass, it is the weekend, give it some time.

They won't leave you out to dry.

[Xencer]

Originally Posted by Taskmaster

What codes are you getting?

Reset all the adaptations with INPA - including Valvetronic, then do the relearn procedure.

I have contacted BPC over the past couple weeks and they won't say anything except that I can schedule a dyno, which is 6 hours away.

I do not have any codes, I have reset the valvetronic limits with a Snapon scan tool and with the IG ON accel pedal depressed for 15 - 20sec. There is no change. I have reset engine operating values and there is no change. I forced my check engine light on and got a code for Thottle Body Adaptation values with the snapon scan tool and the car ran great with the CEL on. I reset the adaptation values and cleared the code and the engine bogs down and wont rev up past 5k.

Only thing I have noticed is that the eccentric shaft specified angle is 15% greater than the actual angle. So at WOT the specified is 255 and actual is around 220. But I have already replaced my eccentric shaft sensor and valve cover gasket as well as the sensor seal and valvetronic motor gasket.

What bothers me is that I can flash the back-up DME file and the car will run fine up until redline, I flash the tune back and it will not make it to redline.

[W37V]

Originally Posted by Xencer

After I installed the MILVs and flashed the BPC tune I have been having reduced power at WOT. At about 40% throttle my car has great torque and it pulls hard, but if you push the accelerator pedal any further, the engine bogs down and revs slower and has less power. I have the same issue after resetting the throttle adaptation values. I can flash the back up DME file and the car runs fine, just a little disappointed that BPC will not look at the tune file again for me after $750 spent, and they'll charge me again to dyno the car to figure out what is wrong with the tune. I'm just gonna go with AA products from now on.

Originally Posted by hassmaschine

Have you contacted BPC to see if they can resolve the issue? Its the weekend, so maybe they just haven't seen your message yet?

Originally Posted by Taskmaster

This is important. And there is no AA equivalent of this tune.

Originally Posted by Noir

10/10 Bob will coordinate with you...
He takes some time to get back to me, but he usually does within 24 hours.
I agree with Hass, it is the weekend, give it some time.

They won't leave you out to dry.

This almost reads as if he reached out to them and bob responded. Maybe I’m reading too much into it.

IIRC, when I did mine, for about 20 miles there was a bit of bogging feeling (nothing major), but it went away with car adjusting to the tune. Never came back. With any tune there are some “side effects” that tend to go away (erratic idle, misfire, etc). In most cases it’s not the tune that made anything faulty, but the tune may have just revealed that something has failed or was about to fail (gas pedal sensor, throttle body, etc). It not the tune’s fault.

I would advise you to reset adaptations and do vanos motor reset (it’s a must). Check your eccentric sensor just in case it got fouled during the install.

Keep us posted.

[Xencer]

No check engine lights come on and the vehicle stores no codes. If the tune caused something to fail, I would see a CEL.

I'm sorry, but this is just very frustrating because I am an automotive technician with 6/8 ASE certifications and I have been trying to find a fault with the operation of the engine and all of my preliminary checks do not reveal any malfunctioning components.

What else can I point to other than the tune that was flashed? What am I supposed to think? I fix people's cars for a living and I've never heard of a car that has full power at less than half throttle and half power at full throttle.

I did not come on here to say BPC is a bad company or anything, just that I am disappointed with the results for the cost. All I have done to the engine is install a 3 stage IM, AFE intake, MILVs, and an axle back exhaust.

My next assumption is to check the pedal position sensor and make sure the car knows I want it at WOT.

If I could do engine parameter recordings during a test drive it would make my life much easier but I do not have a scan tool for BMW capable of that.

[rjahl]

Originally Posted by Xencer

No check engine lights come on and the vehicle stores no codes. If the tune caused something to fail, I would see a CEL.

I'm sorry, but this is just very frustrating because I am an automotive technician with 6/8 ASE certifications and I have been trying to find a fault with the operation of the engine and all of my preliminary checks do not reveal any malfunctioning components.

What else can I point to other than the tune that was flashed? What am I supposed to think? I fix people's cars for a living and I've never heard of a car that has full power at less than half throttle and half power at full throttle.

I did not come on here to say BPC is a bad company or anything, just that I am disappointed with the results for the cost. All I have done to the engine is install a 3 stage IM, AFE intake, MILVs, and an axle back exhaust.

My next assumption is to check the pedal position sensor and make sure the car knows I want it at WOT.

If I could do engine parameter recordings during a test drive it would make my life much easier but I do not have a scan tool for BMW capable of that.

TestO will record engine parameters, no problem. Just search for it.

Only need a dcan cable and a laptop.

Eccentric. Cam angles seem off. Max target should be 175 or so and you will achieve 173ish. 175.4 is the physical limit.

[rjahl]

If you get Testo running, I can help with the custom job config file.

[Taskmaster]

I think he has an issue with the Valvetronic motor itself. Did you try running it without* the tune to see if the problem continues? @Xencer ?

[hassmaschine]

Originally Posted by rjahl

TestO will record engine parameters, no problem. Just search for it.

Only need a dcan cable and a laptop.

Eccentric. Cam angles seem off. Max target should be 175 or so and you will achieve 173ish. 175.4 is the physical limit.

Yeah, i was going to say - eccentic shaft angles greater that 180 degrees physically do not make sense.

I'm thinking there is likely a hardware issue, maybe why BPC is wanting you to bring the car to them - I'm sure they've sold dozzens of these tunes without issue, but sometimes things just do not work perfectly.

You can go back to AA but they can't tune for MILVS anyway..

[Taskmaster]

Originally Posted by hassmaschine

Yeah, i was going to say - eccentic shaft angles greater that 180 degrees physically do not make sense.

I'm thinking there is likely a hardware issue, maybe why BPC is wanting you to bring the car to them - I'm sure they've sold dozzens of these tunes without issue, but sometimes things just do not work perfectly.

You can go back to AA but they can't tune for MILVS anyway..

Xencer
It looks like the car is indeed requesting the full life, but maybe try reinstalling the eccentric shaft motor?

You'll also need to run the car without the tune to see if it's tune related, but myself and a few others are running a variant version of this tune...

[Bob@BPC]

A pm has been sent

[Xencer]

Well I did a few inspections of the valvetronic motor and eccentric shaft sensors and it seems as if those are working properly, I unplugged my DISA valves and test drive the car and it drove exactly the same, no mid range or top end power but plenty of torque. So I am going to condemn the disa valves since they came with my used 3 stage IM and order a new pair. I was just expecting a CEL if they were malfunctioning but the car didn't come with them so maybe that's why there are no codes. Unfortunately I don't think I will be able to make it to BPC due to the distance and time but I am expecting new DISA valves will fix my problem.

Anyways, sorry to sidetrack the thread but the MILVs are a great power adder with the BPC tune and I highly recommend them both.

[hassmaschine]

you don't have any codes because the 328i tune doesn't account for them. If you have a BPC tune, I guess they didn't "turn on" the error codes needed for the flaps to trigger anything. I wouldn't base your diagnosis of failure on the lack of error codes alone, basically.

[Xencer]

My diagnosis is from driving the car with the valves plugged in and then unplugging both and there is literally no change, not from a lack of a DTC? That was merely an observation.

[Taskmaster]

Originally Posted by Xencer

My diagnosis is from driving the car with the valves plugged in and then unplugging both and there is literally no change, not from a lack of a DTC? That was merely an observation.

Try testing them to see if they even work. Could be something simple like a fuse.

[atmosphericM]

This might sound crazy but obv. make sure you have the right tune from BPC (with the 3IM option so that the DME knows to use the DISAs). GL

[Noir]

Originally Posted by atmosphericM

This might sound crazy but obv. make sure you have the right tune from BPC (with the 3IM option so that the DME knows to use the DISAs). GL

^ Never hurts to reaffirm!
I had to when there was a typo in the tune I had gotten with burble in the past-
And evidently it ended up throwing a code afterwards lol.
Got it looked at, reconfigured, and sent back to me from Bob.

[Xencer]

Replaced the DISA valves and it was needed but didnt fix my problem. Engine feels a bit more responsive though.

[Taskmaster]

Originally Posted by Xencer

Replaced the DISA valves and it was needed but didnt fix my problem. Engine feels a bit more responsive though.

Have you tried running the car with the stock tune?

[Xencer]

Originally Posted by Taskmaster

Have you tried running the car with the stock tune?

Hey bud, yeah I flashed the stock tune last night and it runs fine now. It was just embarrassing I would try to pass someone on the highway and my car bogs down and is slow as hell with all these mods, 3 stage intake, AFE intake, MILVs, and BPC tune. With the stock tune it runs fine up til redline and pulls strong.

I did pull a soft code from the DME for 29E0 fuel mixture control which does not set with the stock tune.

[Taskmaster]

Originally Posted by Xencer

Hey bud, yeah I flashed the stock tune last night and it runs fine now. It was just embarrassing I would try to pass someone on the highway and my car bogs down and is slow as hell with all these mods, 3 stage intake, AFE intake, MILVs, and BPC tune. With the stock tune it runs fine up til redline and pulls strong.

I did pull a soft code from the DME for 29E0 fuel mixture control which does not set with the stock tune.

It sounds like a bad O2 sensor, and in that case the code will come back and so will the problems.

[Xencer]

Originally Posted by Taskmaster

It sounds like a bad O2 sensor, and in that case the code will come back and so will the problems.

I hate to say this but your assumptions are incorrect, this is the second time I have flashed the stock tune and there are no issues and when I flash the .MOD file all my problems reappear. Also this BMW uses A/F sensors not O2 sensors to control air fuel mixture. The A/F voltage readings do not indicate a rich or lean bias or a "stuck" condition.

[Bob@BPC]

Originally Posted by Xencer

I hate to say this but your assumptions are incorrect, this is the second time I have flashed the stock tune and there are no issues and when I flash the .MOD file all my problems reappear. Also this BMW uses A/F sensors not O2 sensors to control air fuel mixture. The A/F voltage readings do not indicate a rich or lean bias or a "stuck" condition.

It would be best if you can get me some logs using the methods people posted here in this threat, unfortunately snap ons PIDS are incorrect most of time when it comes to euro cars(we own an ethos with the euro pack).

If you can get me some logs or get it on a dyno I can adjust the tune at no cost to you. I just need more info to make changes if needed, but like others have stated this same tune is being ran on multiple cars without the issue you are having.