[roller84]

I installed the procede a threw a CEL a couple of times. It reduces the power by what seems like shutting off the turbos. It got me thinking, has anyone dyno'd the car when NOT under boost?

[schneid4323]

god with thoose fuel maps.... (having driven with the CEL going off) its slower then a civic....

[jon@themshop]

Originally Posted by roller84

I installed the procede a threw a CEL a couple of times. It reduces the power by what seems like shutting off the turbos. It got me thinking, has anyone dyno'd the car when NOT under boost?

Yes it shuts off the turbo (in a way) by keeping the wastegate open so the turbo does not make any boost at all.. AKA Limp Mode.

[BoostedBMW]

^ Yes, that is correct. I was going to hit my head into the keyboard when I read "shut off the turbos" like they were on a toggle switch or something. Open wastegates means that the turbos aren't being fed any exhaust on the hot side so no boost on the compressor side.

*edit* I meant to say "no" boost on the compressor side.

[roller84]

Originally Posted by BoostedBMW

^ Yes, that is correct. I was going to hit my head into the keyboard when I read "shut off the turbos" like they were on a toggle switch or something. Open wastegates means that the turbos aren't being fed any exhaust on the hot side so boost on the compressor side.

Though I am not the most technically inclined, I didn't mean shutting them off like a switch or something. However, I admit that I did word it to sound like it. I figured that it would of been done in a way that they wouldn't make any boost. First thing that came to mind was I could probably disconnect the vacuum lines leading to one of the boost control solenoid's to effectively run no boost.

[OpenFlash]

Originally Posted by roller84

I installed the procede a threw a CEL a couple of times. It reduces the power by what seems like shutting off the turbos. It got me thinking, has anyone dyno'd the car when NOT under boost?

Are you still throwing a code? If so, under what condition? Lemme know so I can send you a revised map.

Yeah.... with no boost, the car makes about 160whp!

-shiv

[BoostedBMW]

Originally Posted by roller84

Though I am not the most technically inclined, I didn't mean shutting them off like a switch or something. However, I admit that I did word it to sound like it. I figured that it would of been done in a way that they wouldn't make any boost. First thing that came to mind was I could probably disconnect the vacuum lines leading to one of the boost control solenoid's to effectively run no boost.

I understand, I didn't mean to say that you didn't know what you were talking about, that's just what popped into my head when I read that line. Anyway, just know that if you were to disconnect a vac line from the solenoids then you would definitely get a CEL, but more importantly wouldn't the car boost to whatever the wastegate springs were rated for? I know that this would be the case with every other turbo car out there, but with BMW I don't assume anymore. Does anyone know if this would be the case?

[roller84]

Originally Posted by shiv@vishnu

Are you still throwing a code? If so, under what condition? Lemme know so I can send you a revised map.

Yeah.... with no boost, the car makes about 160whp!

-shiv

Initially when I just installed the procede it happened a few times but after some time it happened less and less. I then loaded the revised 1.2(lower boost at higher rpm's) and it still happened a couple of times. I loaded the normal 1.4 file and it has only come on once or twice. I have pushed the car HARD throughout all of this, giving it the opportunity to throw the code often but it happens rarely now. So it isn't a consistent problem. When I get a chance I will try the revised 1.4 that you posted on your support forum.

Oddly enough, I reported the CEL to the dealer when bringing it in for service for an unrelated issue and they said that their computer(s) showed no logged codes. I have been noticing erratic idling and had issues with starting the car a couple of times, where the engine turns over more than usual. I am thinking that I could possibly be suffering from the notorious fuel pump issue. Could my CEL have been throw by that, by any chance?

[Rando]

Without boost, shouldn't it be really close to 225 HP (engine) or ~190 WHP, since it's the old 330i block rated at 225 HP, 214 lb-ft torque?

Anyone have a pointer to the list of changes from the old block to the new one? Hmmm I guess I should search for that one.

[DrDomer]

Originally Posted by shiv@vishnu

Yeah.... with no boost, the car makes about 160whp!
-shiv

Wow... That Honda Accord-esque! I'm surprised it's so low. Any clue why some cars need lower boost targets than others? If it's a semi-regular issue, why not just slightly decrease the boost targets for everyone? Does it change performance that much that you would like to deal with those that have to download different maps? Just curious.

[OpenFlash]

Originally Posted by DrDomer

Wow... That Honda Accord-esque! I'm surprised it's so low. Any clue why some cars need lower boost targets than others? If it's a semi-regular issue, why not just slightly decrease the boost targets for everyone? Does it change performance that much that you would like to deal with those that have to download different maps? Just curious.

I suspect hardware/production variances account for most of the reason why some cars need slightly lowered boost targets than other. By slightly, we're only talking about 0.25psi. Hardly noticeable or even measurable on a dyno. The newest batch of PROcedes I'm shipping out now will have that map as a default so no one will every through a boost-target-not-acheived code. Then they can upload the standard map at their leisure and see if it suits them. But realistically, the lower boost target map is only needed in less than 3% of the cars running PROcedes. So it's certainly not a widespread issue.

Regarding power at 0psi of boost, you can estimate it by running the following numbers:

Stock peak manifold pressure at peak hp: 1.6bar
Stock peak whp: 275whp
No boost whp: 275/1.6= 171whp :rocks: :rocks:

-shiv

[soma4u]

Originally Posted by roller84

Initially when I just installed the procede it happened a few times but after some time it happened less and less. I then loaded the revised 1.2(lower boost at higher rpm's) and it still happened a couple of times. I loaded the normal 1.4 file and it has only come on once or twice. I have pushed the car HARD throughout all of this, giving it the opportunity to throw the code often but it happens rarely now. So it isn't a consistent problem. When I get a chance I will try the revised 1.4 that you posted on your support forum.

Oddly enough, I reported the CEL to the dealer when bringing it in for service for an unrelated issue and they said that their computer(s) showed no logged codes. I have been noticing erratic idling and had issues with starting the car a couple of times, where the engine turns over more than usual. I am thinking that I could possibly be suffering from the notorious fuel pump issue. Could my CEL have been throw by that, by any chance?

Ddid you take the PROcede out when you went to the dealer?

[PresaMat]

Originally Posted by roller84

Initially when I just installed the procede it happened a few times but after some time it happened less and less. I then loaded the revised 1.2(lower boost at higher rpm's) and it still happened a couple of times. I loaded the normal 1.4 file and it has only come on once or twice. I have pushed the car HARD throughout all of this, giving it the opportunity to throw the code often but it happens rarely now. So it isn't a consistent problem. When I get a chance I will try the revised 1.4 that you posted on your support forum.

Oddly enough, I reported the CEL to the dealer when bringing it in for service for an unrelated issue and they said that their computer(s) showed no logged codes. I have been noticing erratic idling and had issues with starting the car a couple of times, where the engine turns over more than usual. I am thinking that I could possibly be suffering from the notorious fuel pump issue. Could my CEL have been throw by that, by any chance?

Sounds a LOT like a fuel pump. I have had the fuel pump issue and it did this.

Mat

[roller84]

Originally Posted by soma4u

Ddid you take the PROcede out when you went to the dealer?

Yes.