[BentZero]

Originally Posted by TSA8151

When you select a map how long does it usually take for bootmod3 to import the tune? I selected a tune and its stuck on importing....please wait.

I'm going to try again in the morning. How long does the import process usually take?

Usually takes about a minute. Make sure you've updated both the app and the wifi device if you're using that. Also, try selecting to only download the tune instead of trying to download and flash.

[MTWO]

Its like 10-15secs

[Pyrite435i]

Originally Posted by BentZero

Usually takes about a minute. Make sure you've updated both the app and the wifi device if you're using that. Also, try selecting to only download the tune instead of trying to download and flash.

Mine has done that a couple of times. Just press back into the Maps section, re-select the map and it will pop up showing already downloaded and ready to flash.

[sirvanny]

Anyone near Los Angeles down to help me install bootmod3? I'm scared I would mess something up lol

I'm not sure if I should take my jb4 out?
I would really really want my car to sound like gunshots and loud pops lol can I get there with 91 octane?

I currently have a meisterschaft evc/ er catless downpipe/ bms mistake/ jb4
I will order my chargepipe ASAP lol

[TSA8151]

Originally Posted by Pyrite435i

Mine has done that a couple of times. Just press back into the Maps section, re-select the map and it will pop up showing already downloaded and ready to flash.

I connected this morning, picked an OTS map, and it was ready almost instantly.

[TSA8151]

Originally Posted by sirvanny

Anyone near Los Angeles down to help me install bootmod3? I'm scared I would mess something up lol

I'm not sure if I should take my jb4 out?
I would really really want my car to sound like gunshots and loud pops lol can I get there with 91 octane?

I currently have a meisterschaft evc/ er catless downpipe/ bms mistake/ jb4
I will order my chargepipe ASAP lol

Kies motorsports has a bunch of good diy videos for the F chassis. I just flashed bootmod3 this morning, super easy. Just make sure you have a battery charger.
http://https://youtu.be/PsNfSHCH7DI
check out his bootmod3 vids.

[_bdiddyb_]

Originally Posted by sirvanny

Anyone near Los Angeles down to help me install bootmod3? I'm scared I would mess something up lol

I'm not sure if I should take my jb4 out?
I would really really want my car to sound like gunshots and loud pops lol can I get there with 91 octane?

I currently have a meisterschaft evc/ er catless downpipe/ bms mistake/ jb4
I will order my chargepipe ASAP lol

U are about 50 mls from me, otherwise I would pop over and do it for you for a couple Heineken's.

BM3 setup/updating is easy...unless you get an error midway, then your car is fcked. Sure you can get gunshot pops with 91oct, just drag the AGG slider all the way to the right and keep exhaust flap open. You should disconnect your jb4 to see if there is ANY code, then attempt to apply bootmod3. Then you can reattach jb4 on map0 if you want logging. You also want to disconnect the meisterschaft evc module as well- that would cause problem during bm3 installation. Basically, set your car back to stock before bm3 install.

[paimon.soror]

So this is somewhat related to BM3, or any tuning in general, but does anyone happen to know, or have tested if on our cars which is our source bottleneck?

I know with stage 2 bm3 the recommendation is a high flow cat, but I believe that is due to the excess heat that would tear up our stock cats (maybe im wrong?). But I know with some other turbo cars (porche for example) they find that their bottleneck is at the turbo's native backpressure production instead of the catalyst.

What I am trying to understand is if going catless even with stage 1 is helping with helping keep the engine operating safely, or if really it doesn't make too much of a difference because our turbos would be the limiting bottleneck.

hope that makes sense.

[BentZero]

Originally Posted by paimon.soror

I know with stage 2 bm3 the recommendation is a high flow cat, but I believe that is due to the excess heat...

They also recommend an upgraded FMIC to combat temps.

[paimon.soror]

Originally Posted by BentZero

They also recommend an upgraded FMIC to combat temps.

yea but i would do that (and do) with stage 1 for safety

[sirvanny]

Originally Posted by _bdiddyb_

U are about 50 mls from me, otherwise I would pop over and do it for you for a couple Heineken's.

BM3 setup/updating is easy...unless you get an error midway, then your car is fcked. Sure you can get gunshot pops with 91oct, just drag the AGG slider all the way to the right and keep exhaust flap open. You should disconnect your jb4 to see if there is ANY code, then attempt to apply bootmod3. Then you can reattach jb4 on map0 if you want logging. You also want to disconnect the meisterschaft evc module as well- that would cause problem during bm3 installation. Basically, set your car back to stock before bm3 install.

Thanks dude! Appreciate it!
What city do you stay in?

[FSociety]

paimon.soror in my X4 M40i i tested the same map with stock and catless downpipe and there was definitely a difference in every possible way.
Heck, I even ran an X4 M40i with JB4 on stock cats vs Catless no tune in my car and we were the same.
As far as it looks, Catless is definitely our biggest bottle neck

[designatedposter]

i ran stage 2 93 octane tune on stock cats and also on catless dp: no perceivable difference in spool behavior or power per the butt dyno. (this is street driving, so no back to back runs)

car: n55 ewg, m235i.

[BentZero]

Originally Posted by designatedposter

i ran stage 2 93 octane tune on stock cats and also on catless dp: no perceivable difference in spool behavior or power per the butt dyno. (this is street driving, so no back to back runs)

car: n55 ewg, m235i.

Wow, brave. How long did you run stage 2 on stock cats?

[designatedposter]

Originally Posted by BentZero

Wow, brave. How long did you run stage 2 on stock cats?

1 month. i basically ran it until my catless dp was delivered. in this time, i was daily driving the car and making a few WOT runs a week for logging and diagnostic purposes. i did not see a difference in my logs either for stock cats vs catless dp. (i didn't do any performance logging though such as 0-100)

obviously, this is all at your own risk. OTS tunes are developed with hardware recommendations for the best application. at the end of the day, a tune does not guarantee safety, reliability, driveability, or performance. as long as you understand and accept the risks, HAVE AT IT. run the stage 5 big turbo e85 AGG burble tune on stock hardware.

back on topic.. my BUTT dyno did not perceive the cats as a restriction for the power level of a stage 2 93 octane OTS tune (15.7 psi)

[paimon.soror]

Thanks, i def know its a "tough" question, and more of a "understanding the car" question for me. Few local porche guys and I were having a chat, which was interesting because Fabspeed makes some really nice HJS cats for their stuff too which is why we were on the random topic.

They mentioned how while you certainly gain power and relieve restrictions by upgrading the cat (catless, highflo, etc), it isn't like they "had to" because their tune was putting down so much power that the engine was being "choked" by the bottleneck of having a cat.

I know some people's misconception running a tune is "you gotta get rid of the cat because of backpressure/bottleneck" but its not always the case.

At least in theirs, the biggest "choke" on their system was the turbos.

Basically the conversation stemmed from my internal questions on "how much extra stress is placed on the N55 and the cats with stock turbo stock cat and a stage 1 tune" .... based on the conversation it was summed up like "not as much as you think".

My idle mind runs wild sometimes lol

[cookiesowns]

EWG cars the cat doesn't make as big of a difference in overall power. However spool characteristics as well as top end boost flow will be much better with catless or highflow cat.

On PWG car I highly recommend just going straight catless... that 3.5" downpipe design doesn't allow much room for the dual cat chamber design that the EWG cars has. It has much more of a restriction. Combined with the fact that naturally the PWG turbo has a much smaller turbine and housing, thus higher turbine temperatures.. you will melt the cat with prolonged high boost scenarios.

My priority for mods is Chargepipe -> FMIC -> Decat/highflowcat -> turbo -> exhaust.

I personally run stock DP on my M2 with a custom tune from 14psi at around 4Krpm peaking at 15.2PSI at 5000ish RPM then tapering down to 14psi or so at 7Krpm to keep exhaust temperatures down.

[FastF30]

Originally Posted by cookiesowns

EWG cars the cat doesn't make as big of a difference in overall power. However spool characteristics as well as top end boost flow will be much better with catless or highflow cat.

This is exactly why I'm thinking it's not really worth for me to even bother with going a highflow cat for me since I'm EWG... hopefully will be loading BM3 stage 2 soon...

[_bdiddyb_]

Not risking destroying my cat, so I put it aside for when it's time to smog check

[FastF30]

Originally Posted by _bdiddyb_

Not risking destroying my cat, so I put it aside for when it's time to smog check

you must have a garage to work on it... wish I did and I do it in a heartbeat... but honestly... doing a full throttle once in a while I doubt anything will happen to the stock cat or even do a couple of back to back runs at the strip... now take it to the track and run it hard for 20 minutes ... now that's a whole different situation...

[s2kvee]

is the (AGG) map just the same as the Stage # map with more Aggressive Burbles or is it a more aggressive map all together?

[ceedawg]

Originally Posted by paimon.soror

So this is somewhat related to BM3, or any tuning in general, but does anyone happen to know, or have tested if on our cars which is our source bottleneck?

I know with stage 2 bm3 the recommendation is a high flow cat, but I believe that is due to the excess heat that would tear up our stock cats (maybe im wrong?). But I know with some other turbo cars (porche for example) they find that their bottleneck is at the turbo's native backpressure production instead of the catalyst.

What I am trying to understand is if going catless even with stage 1 is helping with helping keep the engine operating safely, or if really it doesn't make too much of a difference because our turbos would be the limiting bottleneck.

hope that makes sense.

Originally Posted by FSociety

paimon.soror in my X4 M40i i tested the same map with stock and catless downpipe and there was definitely a difference in every possible way.
Heck, I even ran an X4 M40i with JB4 on stock cats vs Catless no tune in my car and we were the same.
As far as it looks, Catless is definitely our biggest bottle neck

Not totally refuting what Fsociety says concerning the cat but I believe the combination of the tiny ass turbo/exh mani with the cat is the true bottleneck on this N55 engine. I would imagine the turbo would spin more freely catless but in my mind the factory exhaust turbofold may be more so the issue combined with this tiny turbo. It’s possible the cat is a minor restriction in comparison to the rest of the N55 turbo setup hence why some noticed no difference going catless.

I think the exh manifold setup on both the B58 motor and the two separate maifold setup on the S55 are way way superior than the N55 exhaust turbo setup.

Fact that you can also run the factory cats on the S55 motor,get a tune and make a lot of power says a lot to me about the way it’s made. Apparently as a result the cats on the S55 are not a serious bottleneck.