[RPM2-85]

Originally Posted by zenmaster

Isn't this a simple air mass sensor piggy? If so, there is no f*cking with the boost, as you get the same effect by driving at high elevations.

Boost controller.

[zenmaster]

Originally Posted by RPM2-85

Boost controller.

Looks like a MAF signal modifier to me. I'm just looking at the connectors.

[RPM2-85]

Originally Posted by zenmaster

Looks like a MAF signal modifier to me. I'm just looking at the connectors.

Thats where it plugs into...... I guess your saying theres no way to control boost from that connector?

[PackPride85]

Originally Posted by zenmaster

Looks like a MAF signal modifier to me. I'm just looking at the connectors.

It's sitting on the MAP sensor on the charge pipe. Most likely limits the output of the sensor either at the top end of the signal range or some variable value throughout. Either way, these are generally not considered ideal and can lead to issues.

[zenmaster]

Originally Posted by RPM2-85

Thats where it plugs into...... I guess your saying theres no way to control boost from that connector?

No, it will allow you to control boost in an indirect manner. It's more like a boost "influencer".

The car automatically determines appropriate boost level to move an amount of air. When the air density reduces (e.g. at altitude), the car applies more boost. When air density increases (e.g. very cold day) the car will applies less boost (than a warmer day).

BMW want theirs turbo cars to produce a consistent amount of power under varying atmospheric conditions. Devices like this exploit the fact that there is a higher, reserved, boost pressure limit built in by the factory programming. The car should stop producing boost past max programmed limits because the ECU is still getting the actual boost reading.

So by changing the MAF reading, the boost is effectively raised (to the factory limit) or lowered. Hence "boost controller". Anyway that's my understanding of it.

[zenmaster]

Originally Posted by PackPride85

It's sitting on the MAP sensor on the charge pipe. Most likely limits the output of the sensor either at the top end of the signal range or some variable value throughout. Either way, these are generally not considered ideal and can lead to issues.

Yeah I'd think the A/F ratio might be off some, but other than that I'd think it'd either work or not. I'd be more concerned about heat and/or turbo stress which this device should not really induce on 93 octane. You probably don't want to run this device on 91 octane with an M2 unless you are in a cold climate. Terry already showed where timing was pulled on 91 in stock form.

Also, I don't think you can get legitimate dyno results on this by doing quick back-to-back runs. You probably have to drive the car for many miles after installation and do several WOT runs, for ECU adaption purposes.

[auf Deutsch]

Originally Posted by PackPride85

these are generally not considered ideal and can lead to issues.

You're right, it's not ideal given its one sensor connection point. It merely manipulates the DME into making more boost. That doesn't mean it's not a great product. I'm using it as a stopgap until the weather warms up and I can get stage 4 done. I can't get the power down as it is right now.

Originally Posted by zenmaster

Yeah I'd think the A/F ratio might be off some, but other than that I'd think it'd either work or not. I'd be more concerned about heat and/or turbo stress which this device should not really induce on 93 octane. You probably don't want to run this device on 91 octane with an M2 unless you are in a cold climate. Terry already showed where timing was pulled on 91 in stock form.

Also, I don't think you can get legitimate dyno results on this by doing quick back-to-back runs. You probably have to drive the car for many miles after installation and do several WOT runs, for ECU adaption purposes.

I've had zero issues running 93, smooth as butter.

As for the dyno runs, the first run was with the unit on (installed and continually running for about a month). Then we dyno'd with it disconnected. The results should be viable .

[RPM2-85]

Originally Posted by zenmaster

No, it will allow you to control boost in an indirect manner. It's more like a boost "influencer".

The car automatically determines appropriate boost level to move an amount of air. When the air density reduces (e.g. at altitude), the car applies more boost. When air density increases (e.g. very cold day) the car will applies less boost (than a warmer day).

BMW want theirs turbo cars to produce a consistent amount of power under varying atmospheric conditions. Devices like this exploit the fact that there is a higher, reserved, boost pressure limit built in by the factory programming. The car should stop producing boost past max programmed limits because the ECU is still getting the actual boost reading.

So by changing the MAF reading, the boost is effectively raised (to the factory limit) or lowered. Hence "boost controller". Anyway that's my understanding of it.

SO if this is the case, then the DME should never read overboost levels? Effectively the DME cant record anything out of the ordinary because it doesnt have the ability to go past stock configuration. Maybe this device cant be seen by the dealership if removed?

Anyway, I am going to run an intercooler with this setup for a while once the heat comes back. Then possibly go to a Bootmod3 setup down the road. Its fast enough now so I just want to dial in what I have.

Either way, the DME has acted wonderfully and gives loads of power with no lag all over the place. I absolutely love love this engine. 2nd gear fights for traction. Its funny to be at 2000rpms and instantly have the tires start to shred when you mash it.

[zenmaster]

Originally Posted by RPM2-85

SO if this is the case, then the DME should never read overboost levels? Effectively the DME cant record anything out of the ordinary because it doesnt have the ability to go past stock configuration. Maybe this device cant be seen by the dealership if removed?

AFAIK, it should only provide a way to make use of the built-in amount of overhead boost. The computer is still reading direct AIT, waste gate duty cycle, A/F etc. You shouldn't get a fault unless something is wrong with the signal, because the ECU programming is designed to compensate for the (viable) MAF signal range indicated.

[auf Deutsch]

Originally Posted by RPM2-85

Exactly!!! Get a DP and the thing gets pretty squirmy.

Waiting to hear back from Fabspeed Motorsport to set up an appointment for install and subsequent dyno runs.

[No Boost]

Originally Posted by auf Deutsch

Waiting to hear back from Fabspeed Motorsport to set up an appointment for install and subsequent dyno runs.

Looking forward to your review

[Fabspeed Motorsport]

Originally Posted by auf Deutsch

Waiting to hear back from Fabspeed Motorsport to set up an appointment for install and subsequent dyno runs.

I'm excited to get this all done for you! You're definitely going to notice a difference with the Sport Cat. Boost hits in a lot harder and turns these cars into little rocket ships.

pup73 Thanks for chiming in! I hope all is well with your M2 and S2K!

[twin fed]

I am going to be ordering the Fabspeed sport cat real soon

[auf Deutsch]

Originally Posted by twin fed

I am going to be ordering the Fabspeed sport cat real soon

By all accounts, it's the one to have.

[twin fed]

Originally Posted by auf Deutsch

By all accounts, it's the one to have.

Yeah, that seems to be the case.

[Fabspeed Motorsport]

Originally Posted by twin fed

I am going to be ordering the Fabspeed sport cat real soon

I'd be happy to get you set up with one! Check your PMs!

Originally Posted by auf Deutsch

By all accounts, it's the one to have.

Thanks bud!

[twin fed]

Originally Posted by Fabspeed Motorsport

I'd be happy to get you set up with one! Check your PMs!



Thanks bud!

Thanks, but we had already talked and I mentioned the deal that I was getting from Mike at Extreme and you told me to go with him. But anyway, I ordered it today. Can't wait to install it and see how this beast opens up!

[Fabspeed Motorsport]

Originally Posted by twin fed

Thanks, but we had already talked and I mentioned the deal that I was getting from Mike at Extreme and you told me to go with him. But anyway, I ordered it today. Can't wait to install it and see how this beast opens up!

Sorry for the brain fart, so much stuff going on here on a day-to-day basis. We have to respect our retailers but I'm glad Mike was able to take care of you - he's a great dude!

[twin fed]

Originally Posted by Fabspeed Motorsport

Sorry for the brain fart, so much stuff going on here on a day-to-day basis. We have to respect our retailers but I'm glad Mike was able to take care of you - he's a great dude!

No problem, I totally hear ya. He definitely hooked it up!

[NO_USER_]

What gear should the 6 speed manual be in during a dyno run?

[Fabspeed Motorsport]

Originally Posted by Mbavar2

What gear should the 6 speed manual be in during a dyno run?

6spd cars usually are dyno'd in 4th gear but every car is different. I know we dyno the M2 in 4th gear.

[NO_USER_]

Originally Posted by Fabspeed Motorsport

6spd cars usually are dyno'd in 4th gear but every car is different. I know we dyno the M2 in 4th gear.

Thanks! I've been reading some have been doing the manual M2 in 5th gear as well. Do you know what the gear ratios are? Wonder which one is closest to 1:1

Thanks!