BMS Stage 1 Same As Stock

[9SECDD]

Originally Posted by ///F80M3

I didn't expect much from the tune but I didn't expect to stay side by side with a stock m4. I was literally stock lol.

Even half car length would've been fine with me but to take a risk in tuning and run same as stock didn't make any sense.

You think a BMS stage 1 is taking a risk with tuning? Many of us must be suicidal, then.

Seriously, though. You are going down the wrong path. The BMS Stage 1 and JB4 work. There is no question. Either yours is defective, hooked up wrong, or circumstance/user-error related.

[///F80M3]

Originally Posted by NJ-M4

You think a BMS stage 1 is taking a risk with tuning? Many of us must be suicidal, then.

Seriously, though. You are going down the wrong path. The BMS Stage 1 and JB4 work. There is no question. Either yours is defective, hooked up wrong, or circumstance/user-error related.

Any tune is a risk. I'm willing to take that risk if there are gains but not for it to run like stock.

Will update this thread once I find out what the hell is going on. Installation is fine, just two plugs, not rocket science lol

[9SECDD]

Originally Posted by ///F80M3

Any tune is a risk. I'm willing to take that risk if there are gains but not for it to run like stock.

Will update this thread once I find out what the hell is going on. Installation is fine, just two plugs, not rocket science lol

Stage 1 is hardly a risk, relatively speaking. I find it boring, honestly. But there are clearly very noticeable gains over stock. Either your unit is defective or you have done something wrong.

[///F80M3]

Originally Posted by NJ-M4

Stage 1 is hardly a risk, relatively speaking. I find it boring, honestly. But there are clearly very noticeable gains over stock. Either your unit is defective or you have done something wrong.

I honestly should've just bought the jb4 for the logging capability's. I will run map 1 on 93 like bms stage 1 but at least I will know what's going on with my car.

[teefive]

Originally Posted by ///F80M3

I honestly should've just bought the jb4 for the logging capability's. I will run map 1 on 93 like bms stage 1 but at least I will know what's going on with my car.

Interested in results. I'm betting you had a defective jb1

[turbomcgee]

OK... Thought I'd add some data to the conversation.

I too have the BMS stage 1, and it adds serious power...but there are a few tricks to it.

1. if its cold out and/or you live very close to sea level like myself the +4 setting might be too much for you and cause a hesitation from 6500rpm+ this is the car misfiring. - I had to turn mine down to 2.5psi when it was colder out <50*. Now that its 70*+ our my car loves the +4 psi setting. - every car is different

2. I ran the stage 1 at a standing half mile event and trapped 150mph with an ET of 18.7, so yea the stage one kicks ass. The elevation there was 2000 feet and DA that day was 2800. I did find that shifting at 7000-7200rpm was faster then running it out to 7500rpm.

3. if you think the stage 1 if going to make your 0-60 times faster you are wrong, dont be upset if they are a little slower. Alll stage one does is add 4psi to whatever the factory boost command was, and that torque will destroy your rear tires, even with pedal modulation you will not get better 0-60 times on street tires.

4. If it is under 60 degrees out, or your tires are cold the car will cut throttle when you try a roll with DSC or MDM on, its just too much torque and it will make you car seem slower hence why a stock car could keep up or beat you. - I even found that what felt like a perfect run with MDM on was still not as fast as DSC off.

Shutting DSC off 100% on a highway roll would be ideal, if you are comfortable driving out of a little wiggle of the tail you will be fine... but be aware I have had the tail come out completely on the 2-3 shift, but this platform for the most part is easy to handle, assuming you didnt come from a 105hp CRX.

I've played with settings as low as 2psi and have some Vbox data on some of those settings below.

Overall stage 1 does work and works very well... you can feel the torque gains right from 2500rpm+
People have been doing this trick for years by using resistors on the map sensor wires, that method was ghetto but worked and the BMS solution has a lot more R&D involved in it, I haven’t cracked the box open but I’m sure its using a similar concept and altering the Tmap and Map sensor voltage.

hope this helps anyone who’s is looking at the BMS stage 1 - for $379 you wont find a bigger gain.

Vbox verified logs 60-100mph (60-130mph logs aren’t easy to pull off in my area) - Both runs were done with DSC off and on 93 octane.

A stock DCT M4 would run about 4.8-4.9 seconds

Stage 1 set on +4psi 60-100mph in 3.85 seconds



Stage 1 set on +2.5psi 60-100mph in 4.17 seconds

[PayamFSU]

Originally Posted by turbomcgee

OK... Thought I'd add some data to the conversation.

I too have the BMS stage 1, and it adds serious power...but there are a few tricks to it.

1. if its cold out and/or you live very close to sea level like myself the +4 setting might be too much for you and cause a hesitation from 6500rpm+ this is the car misfiring. - I had to turn mine down to 2.5psi when it was colder out <50*. Now that its 70*+ our my car loves the +4 psi setting. - every car is different

2. I ran the stage 1 at a standing half mile event and trapped 150mph with an ET of 18.7, so yea the stage one kicks ass. The elevation there was 2000 feet and DA that day was 2800. I did find that shifting at 7000-7200rpm was faster then running it out to 7500rpm.

3. if you think the stage 1 if going to make your 0-60 times faster you are wrong, dont be upset if they are a little slower. Alll stage one does is add 4psi to whatever the factory boost command was, and that torque will destroy your rear tires, even with pedal modulation you will not get better 0-60 times on street tires.

4. If it is under 60 degrees out, or your tires are cold the car will cut throttle when you try a roll with DSC or MDM on, its just too much torque and it will make you car seem slower hence why a stock car could keep up or beat you. - I even found that what felt like a perfect run with MDM on was still not as fast as DSC off.

Shutting DSM off 100% on a highway roll would be ideal, if you are comfortable driving out of a little wiggle of the tail you will be fine... but be aware I have had the tail come out completely on the 2-3 shift, but this platform for the most part is easy to handle assuming you didnt come from a 105hp CRX.

I've played with settings as low as 2psi and have some Vbox data on some of those settings below.

Overall stage 1 does work and works very well... you can feel the torque gains right from 2500rpm+
People have been doing this trick for years by using resistors on the map sensor wires, that method was ghetto but worked and the BMS solution has a lot more R&D involved in it, I haven’t cracked the box open but I’m sure its using a similar concept and altering the Tmap and Map sensor voltage.

hope this helps anyone who’s is looking at the BMS stage 1 - for $379 you wont find a bigger gain.

Vbox verified logs 60-100mph (60-130mph logs aren’t easy to pull off in my area) - Both runs were done with DSC off and on 93 octane.

A stock DCT M4 would run about 4.8-4.9 seconds

Stage 1 set on +4psi 60-100mph in 3.85 seconds



Stage 1 set on +2.5psi 60-100mph in 4.17 seconds

pretty much what he said , same exact observations here .....

[///F80M3]

turbomcgee

Do u have any other mods?

[turbomcgee]

Originally Posted by ///F80M3

turbomcgee

Do u have any other mods?

Just the BMS stage 1.

Now that the weather is getting nice, do a 60-100+ roll against your buddy, with DSC off. If your stage 1 is hooked up correctly and working you will put a few cars on him. - Just dont do it on cold tires.

Also is there any chance you accidentally touched the BMS unit against the battery positive? its only within inches of where they suggest mounting it.

- Order the BMS cable too its worth it.

[///F80M3]

Originally Posted by turbomcgee

Just the BMS stage 1.

Now that the weather is getting nice, do a 60-100+ roll against your buddy, with DSC off. If your stage 1 is hooked up correctly and working you will put a few cars on him. - Just dont do it on cold tires.

Also is there any chance you accidentally touched the BMS unit against the battery positive? its only within inches of where they suggest mounting it.

- Order the BMS cable too its worth it.

I taped the battery terminal when installing the stage 1. I think BMS stage 1 will work well on a stock car. I have a feeling my catback exhaust and drop in filter are causing fueling issues.

[hdubf80]

Originally Posted by ///F80M3

I taped the battery terminal when installing the stage 1. I think BMS stage 1 will work well on a stock car. I have a feeling my catback exhaust and drop in filter are causing fueling issues.

Why would the cat back exhaust be the problem? Reason im asking is because im installing mine this week hopefully and looking at bms stage 1 for a boost.

[turbomcgee]

Originally Posted by hdubf80

Why would the cat back exhaust be the problem? Reason im asking is because im installing mine this week hopefully and looking at bms stage 1 for a boost.

Its not the exhaust, a cat back would have no negative impact to the tune. You'll love the BMS tune.

[turbomcgee]

Originally Posted by ///F80M3

I taped the battery terminal when installing the stage 1. I think BMS stage 1 will work well on a stock car. I have a feeling my catback exhaust and drop in filter are causing fueling issues.

That would not cause fuel trim issues, go run the car again and shut DSC off, can you get your buddy to run again? do a 50/60 to 100 roll and let us know how it goes.

[shahano]

Just try it again with DSC off

[ZAGA_M3]

Originally Posted by hdubf80

Why would the cat back exhaust be the problem? Reason im asking is because im installing mine this week hopefully and looking at bms stage 1 for a boost.

I should also be getting my REMUS this week..and since i have the drop in filter and the bms stage 1 it should be better, louder and pull harder.
exhaust cannot be the reason for that IMHO

[///F80M3]

Originally Posted by turbomcgee

That would not cause fuel trim issues, go run the car again and shut DSC off, can you get your buddy to run again? do a 50/60 to 100 roll and let us know how it goes.

Will do

[salraf]

Is this a pretty easy install? Time factor?

[mike@x-ph.com]

Originally Posted by salraf

Is this a pretty easy install? Time factor?

10-15 minutes ... Cant be any easier
Only 2 connections

[webshellstudios]

Def felt the difference. It's a quicker car for sure. Should have destroyed a stock M3. Now... I will say I added DPs and Stage 1 together.

[shahano]

Whats the update //F80 M3??

[ecf34]

Originally Posted by salraf

Is this a pretty easy install? Time factor?

I think it depends on how often you want to remove it. I don't plan on taking it on and off frequently so I spent an hour with electric tape and zip ties making sure it's held securely in place and has no chance of flopping around and touching anything in the engine bay.

[///F80M3]

UPDATE: Bought and installed jb4 with fuel connector. Running map 2 on 93 octane and the car pulls a lot smoother. No more hesitation at 120mph and hopefully I pull on a stock m4 now lol