[mdyates]

Terry, will this Future Use set to 100, quiet the cold idle down? Will it negatively impact performance?

[SchnellFowVay]

Originally Posted by mdyates

Terry, will this Future Use set to 100, quiet the cold idle down? Will it negatively impact performance?

Might it help with my rough idle issues?

Also, will this setting apply globally to all the maps, or will it only apply to the custom map?

[SchnellFowVay]

?

[Track Master]

Sir Terry

Do you want me to pursue getting into the 11's with sw & dp only? If you want to see how far we can get without meth then I'm happy to test otherwise I'm ready for the next stage.

[Terry @ BMS]

I'd say get the meth going and lets see an 11!

[335R1]

I'm hurting Terry. Any news on the F30 N55 tune?

[Terry @ BMS]

No, waiting for a local F30 to show up so we can get started on that. If anyone is interested just drop me an email.

[SchnellFowVay]

Originally Posted by Terry @ BMS

No, waiting for a local F30 to show up so we can get started on that. If anyone is interested just drop me an email.

Terry,

Can you please answer my questions above.

Also, just a quick practical question. If the JB4 is set to autoclear codes, how will I know if i have a legitimate problem with my car (fuel pump goes bad, etc.)? Or does it just delete DP-related codes?

[Terry @ BMS]

Originally Posted by SchnellFowVay

Terry,

Can you please answer my questions above.

Also, just a quick practical question. If the JB4 is set to autoclear codes, how will I know if i have a legitimate problem with my car (fuel pump goes bad, etc.)? Or does it just delete DP-related codes?

I normally skim over the forum and just chime in from time to time. If you have a question specific to your car always email in, as I generally won't answer those on the forum even if I see them.

With auto clear real codes still throw a check engine light. So if you see a light, go to map 0 and read the code before auto clear can delete it.

[335R1]

Originally Posted by Terry @ BMS

No, waiting for a local F30 to show up so we can get started on that. If anyone is interested just drop me an email.

Someone please with the love of god and all man kind! Please! If I was local, it would be there in a heart beat.

[NextStep]

Moved to JB4 N54 info, firmware, software, and updates..

[f3d]

Can we get release notes on the March 7th hex file? What's changed? I wanna install it but....

[Terry @ BMS]

Nothing major vs. 3/7. I think we just added the TPMS and changed the WW meth algorithm.

[NetEagle]

The biggest change was that with the older firmware I was getting dash-resets quite frequently. Not a single one on the new firmware. Thanks Terry.

[UserName99]

Originally Posted by SchnellFowVay

Also, at low RPMS, the car sounds like a diesel truck engine. This I was not expecting.

Finally, on a cold start, when the car sits at ~1200 rpms for a brief period, the car is piercingly noisy.

I experienced the same exhaust noise problems that made my 135 sound like farm equipment in low and mid ranges, and just flat out loud-&-obnoxious in higher RPM ranges.

Please bear in mind that BMW probably tunes the muffler baffles very precisely to obtain very pleasant exhaust notes across a wide RPM range. Indeed, a stock 135 N55 makes very pleasing noises.

Exhaust gas volume and velocity increase dramatically when running high boost pressures through a c*t-less down-pipe.

A baffled muffler simply will not handle these increased exhaust volumes and velocities. Much of the unpleasant noises you are hearing are the muffler baffles being overwhelmed by the increased gas volumes and velocities.

I did some research and found the MadDad Whisper axle-back muffler
. It is a straight-through design, but it is amazingly quiet, with a very nice deep throaty tone.

The new muffler also solved the very loud cold start up. It is not Camry quiet, but no where near as loud and obnoxious as it used to sound on cold start up.

I'd highly recommend the MadDad Whisper for anyone with a down-pipe.

In any case, a performance muffler is pretty much a requirement if you're running a down-pipe.

[mdyates]

I'm going to try e85 mix tonight on my n55. Anxiously awaiting an update for us n55 guys though!!

[Terry @ BMS]

We haven't done any N55 E85 testing yet. But if you want to add say a 20% mix and email in some CSV logs I'd love to see them!

[mdyates]

Good thing I caught this reply now. Almost headed out to do 60/40 e85/93 oct and try map 7. Saying its not a good idea?

[Terry @ BMS]

Right, not a good idea, as the fuel trims, etc, will likely be way off with more than a 20-30% mix, until we work up special firmware.

[mdyates]

Ok, I'll try a low % mix and send a csv to you. I googled again and some guys have been running a 40% or so with map 7 with N55!

[SchnellFowVay]

Terry,

Has anyone installed that the racing-cat DP that you sell on your website for the N55? This straight-through DP is starting to get on my nerves -- both teh noise and the fumes.

Are the power gains even worth it for the catted DP?

[Terry @ BMS]

We ship them all the time! Good option if you want to keep it a little quieter.

[mdyates]

Ok, did 30% E85 on top of 93 and couldn't run logs this time. On Map 2 it is stronger. Not quite race gas but again I was on Map 2. Breaks loose in 2nd when throttled. Boost was more consistent and timing was hanging around mid-3/4 on boost hijack (normally its 1/4 to mid) No long starts or anything weird. The N55 seems to LOVE it, btw and I'll fill up again soon with the mix. NEED a Map for it though!

[Track Master]

Does anyone know when Map5 (Auto Tuning) will be fully developed for the N55? with all this E85 testing going on the N55 guys are being left out.
Also if I do not opt to use E85 but 104RM2 instead + meth will I yield the same or even better results than using E85? Asking this cos when I ran a 12.00 it was on 104RM2, K&N & Ar Dp only but Terry gave me a custom Map6 settings with 17.5psi peak boost. Will I be able to boost above this with the addition of meth on Map3 (using a normal JB4 board)? I want to run a 11.7 soon.

[AJG1137]

I currently have the N55 JB3 and the BMS CAN tool.

I want to upgrade to N55 JB4. Is it possible for me to only hook the "core" up to my existing harness and use the CAN tool instead of the integrated CAn controls?