N55 JB4 Stage 2 issues

[|2ed]

I was using Stage 1 and upgraded with a few additional wires and controller to Stage 2.

Mods: Injen Intake, Catless DP, Berk Full race, 98oct.

Issues:
1) Hesitant when flooring accelerator. This problem is inherent since stage 1.
2) Whistling sound when cruising around 1.5 to 2.5k rpm.
3) Sudden jerk when cruising.
4) Weird idling rpm.
5) Engine died when caught in slow traffic.

Anyone experience all these? Any other tunes to recommend. I really feel like giving up on JB4.

Currently I am on Map 0 and I dont have all these issues except Point No. 4.

[Mike@N54Tuning.com]

Originally Posted by |2ed

I was using Stage 1 and upgraded with a few additional wires and controller to Stage 2.

Mods: Injen Intake, Catless DP, Berk Full race, 98oct.

Issues:
1) Hesitant when flooring accelerator. This problem is inherent since stage 1.
2) Whistling sound when cruising around 1.5 to 2.5k rpm.
3) Sudden jerk when cruising.
4) Weird idling rpm.
5) Engine died when caught in slow traffic.

Anyone experience all these? Any other tunes to recommend. I really feel like giving up on JB4.

Currently I am on Map 0 and I dont have all these issues except Point No. 4.

There are no known issues with the N55 Stage2. Your first step should be to contact BMS for support, they can probably help you find your problem.

Mike

[Dosturbos]

Cobb, dude.
JB4 is a glorified boost contoller.

[geared]

doh, no dos. that's just unfounded garbage to be kept to yourself.

[Dosturbos]

Originally Posted by geared

doh, no dos. that's just unfounded garbage to be kept to yourself.

Hmmm... I didn't know I wasn't allowed to form my own opinions based on personal experience and post them on the forum.

I had a JB4 installed when I purchased my car, it was just great until I added more mods to my vehicle and the ECU wouldn't learn them. It's a cool little toy for the price, but the Cobb is way easier to use, IMHO, and can be custom tuned. I don't have anything personal against it, they are great for cars running meth, and they do advance fuel and timing and such, just not my bag. I am much happier with the Cobb than the JB4. Sorry to hurt anyone's feelings.

I just put down 463wtq and 375whp on a low reading dyno with the cobb custom tuned.

[BadM4]

Originally Posted by |2ed

I was using Stage 1 and upgraded with a few additional wires and controller to Stage 2.

Mods: Injen Intake, Catless DP, Berk Full race, 98oct.

Issues:
1) Hesitant when flooring accelerator. This problem is inherent since stage 1.
2) Whistling sound when cruising around 1.5 to 2.5k rpm.
3) Sudden jerk when cruising.
4) Weird idling rpm.
5) Engine died when caught in slow traffic.

Anyone experience all these? Any other tunes to recommend. I really feel like giving up on JB4.

Currently I am on Map 0 and I dont have all these issues except Point No. 4.

if you are on map 0 you are not using the jb4 thats the bypass map...try map 2

[JK135i]

Dos - I checked Cobb's website and I don't think they actually make anything for the N55, however, I could be wrong since I don't track Cobb's products very closely.

[Dosturbos]

Originally Posted by JK135i

Dos - I checked Cobb's website and I don't think they actually make anything for the N55, however, I could be wrong since I don't track Cobb's products very closely.

I thought they finally put something out for the n55 guys. Needless to say I like the versatility they offer.

[I35it]

Just checked and they don't have anything listed for the n55. Seems like the Jb4 is the best option as of at this moment.

[JK135i]

I'm sure there is something in the works. I have the JB4 G5 board, I use meth so it works well for me.

I just helped a friend install the stage 1 on his N55 and he hasn't said anything about having the problems that you are dealing with. I would take Mikes advice and shoot Terry an email or call him, his customer service is pretty outstanding. Just a heads up he might want some logs to review what the car is doing, if that's possible.

[M135]

Originally Posted by |2ed

I was using Stage 1 and upgraded with a few additional wires and controller to Stage 2.

Mods: Injen Intake, Catless DP, Berk Full race, 98oct.

Issues:
1) Hesitant when flooring accelerator. This problem is inherent since stage 1.
2) Whistling sound when cruising around 1.5 to 2.5k rpm.
3) Sudden jerk when cruising.
4) Weird idling rpm.
5) Engine died when caught in slow traffic.

Anyone experience all these? Any other tunes to recommend. I really feel like giving up on JB4.

Currently I am on Map 0 and I dont have all these issues except Point No. 4.

Did you check all your connections to the sensors? Try taking it out all together instead of using the bypass map as that eliminates the jb4 totally it just takes a minute to remove.

[mitch55]

This is the exact reason i took out my JB4. The car sometimes wanted to go but at other times hesitated.

I'm thinking about going with Dinan just so I have no problems with the dealer.

[Mike@N54Tuning.com]

Originally Posted by mitch5655

This is the exact reason i took out my JB4. The car sometimes wanted to go but at other times hesitated.

I'm thinking about going with Dinan just so I have no problems with the dealer.

Did you email Terry with a datalog or anything? The JB4 for the N55 is a pretty solid tune so I can't imagine it couldn't be easily resolved.

Mike

[chopper817]

Originally Posted by geared

doh, no dos. that's just unfounded garbage to be kept to yourself.

No mater what it is.... It's that persons opinion and I say if you don't like what someone says, don't ban them from saying it, I say don't listen.
Like the radio, don't like what's on it then change the channel.

Sorry for the hijack...

I have an N55 an I use procede, while yes it's a bit more in cost, I think it's one of the pest options available! Especially with its ability of meth integration. I've had mine on sense 1500 miles and have had 0 issues while going from stock with procede to adding 1 bolt on at a time all the way to FBO w/meth at 80/20 with no problems at all!

My opinion is to sell it and get a procede.

[Mike@N54Tuning.com]

Originally Posted by chopper817

No mater what it is.... It's that persons opinion and I say if you don't like what someone says, don't ban them from saying it, I say don't listen.
Like the radio, don't like what's on it then change the channel.

Sorry for the hijack...

I have an N55 an I use procede, while yes it's a bit more in cost, I think it's one of the pest options available! Especially with its ability of meth integration. I've had mine on sense 1500 miles and have had 0 issues while going from stock with procede to adding 1 bolt on at a time all the way to FBO w/meth at 80/20 with no problems at all!

My opinion is to sell it and get a procede.

We've had a lot of customers move to the JB4 from the procede lately due to problems over there. Regardless of the tune used I think it's simply a matter of engaging support and troubleshooting to see what the issue is.

http://www.e90post.com/forums/showthread.php?t=716158

Mike

[|2ed]

Thanks for all the suggestions.

I called up the distributor in Singapore and they suggested that I should update the DME to the latest version.

REALLY WTF!!! THE CAR NOW SOUNDED LIKE A PUSSY!!!

ALL THE BACKFIRE ARE GONE!!!

Do not update to the latest DME...

[|2ed]

Hey guys,

Anyone knows if the PPK flash will bring back all the pops and gurgles noise from the exhaust? I got the downpipe and berk muffler delete to get all the sound. I really want them back badly.

Thanks.

[bogart]

Originally Posted by |2ed

I was using Stage 1 and upgraded with a few additional wires and controller to Stage 2.

Mods: Injen Intake, Catless DP, Berk Full race, 98oct.

Issues:
1) Hesitant when flooring accelerator. This problem is inherent since stage 1.
2) Whistling sound when cruising around 1.5 to 2.5k rpm.
3) Sudden jerk when cruising.
4) Weird idling rpm.
5) Engine died when caught in slow traffic.

Anyone experience all these? Any other tunes to recommend. I really feel like giving up on JB4.

Currently I am on Map 0 and I dont have all these issues except Point No. 4.

1) What transmission do you have? The DCT will be slightly hesitant due to the fuel cutting from a dead stop when you jamb the gas. Saves the clutches and tires. Try turning the traction control completely off by holding DTC on the dash for 5 seconds. You will notice now you spin the tires from a dead stop.

2) The whistling sound is a vacuum leak. Have it repaired through service.

3) Not sure what the jerk is. I'm assuming this is during steady-state cruising at a single RPM? If not steady-state then it could be something to do with what you are doing with the throttle and transmission gearing at the time.

4) Weird idling is very common with the N55 and is not tune related. Hopefully one day BMW will fix this, but probably not. If the RPM is "weird" then what is the RPM that it's idling at?

5) Explain the "engine died" in more detail. What symbol showed up on the dash? What was your oil temp at the time?

6) You should be running Map 2 with the mods you have to get the best results out of the tune. Make sure you go to this website and make sure you are running the latest firmware and that the tune is setup correctly via a laptop:

http://www.n54tech.com/forums/showpo...08&postcount=1

Any other issues contact Terry @ Burger Tuning. He's more than willing to help.

Oh, and to your latest postings... the DME update is shown to actually work very well with JB4 Stage 2. Terry proved this through DYNO results.

[M135]

Originally Posted by chopper817

No mater what it is.... It's that persons opinion and I say if you don't like what someone says, don't ban them from saying it, I say don't listen.
Like the radio, don't like what's on it then change the channel.

Sorry for the hijack...

I have an N55 an I use procede, while yes it's a bit more in cost, I think it's one of the pest options available! Especially with its ability of meth integration. I've had mine on sense 1500 miles and have had 0 issues while going from stock with procede to adding 1 bolt on at a time all the way to FBO w/meth at 80/20 with no problems at all!

My opinion is to sell it and get a procede.

Dyno results?

[ParkNuts]

^^Ditto^^

Let's see those results!!

Originally Posted by chopper817

I have an N55 an I use procede,
My opinion is to sell it and get a procede.

[chopper817]

Originally Posted by M135

Dyno results?

i havent dynoed my car, but i can tell you about real world results....

with everything i have minus the meth injection, i did some runs against a couple different vehicles form 60mph to 160+mph....

vs 2011 m3.... i pulled away
vs new audi RS4.... i pulled away really well!
bens 63 AMG..... stayed dead even... i dont know if it was a c or e... it was partially de badged...

[M135]

Originally Posted by chopper817

i havent dynoed my car, but i can tell you about real world results....

with everything i have minus the meth injection, i did some runs against a couple different vehicles form 60mph to 160+mph....

vs 2011 m3.... i pulled away
vs new audi RS4.... i pulled away really well!
bens 63 AMG..... stayed dead even... i dont know if it was a c or e... it was partially de badged...

Not trying to be a tool or doubt performance, but that does not tell me too much. Maybe do a virtual dyno with log exports from the Procede to give us some comparables?