[JLGM4]

So I bought the JB4 and am getting a magnaflow sport exhaust for my 335i sedan 2011 but I was wondering what else I can get to increase performance? Also, with just the JB4 installed alone with the exhaust, what map should i run and whats the difference?

[Maniac0908]

I run map 5. Dci, downpipes, intercooler, and if you can get it e85. I had everything but the e85 for a while. Then one day i added it. O jesus. Its a beast.

[JLGM4]

Originally Posted by Maniac0908

I run map 5. Dci, downpipes, intercooler, and if you can get it e85. I had everything but the e85 for a while. Then one day i added it. O jesus. Its a beast.

What is e85? sorry new to this stuff

[Maniac0908]

Its a type of fuel. I know nothing more about it. Lol. You can get it at certain gas stations. I usually do 70/30 which is 70% 93 octane 30% e85. Its the gas that those flex fuel cars use.

After you add something do a couple pulls in 3rd gear on map 5 so it learns. Map 5 is the auto learning map. Most people use that unless you tracking it then you might want a different map.

[tc535i]

With just a jb4 and exhaust, run map 1. If you're adding ethanol (e85), run no more than 30% and run map 5 to adapt. Like he said, it takes a few pulls to learn the higher octane.

You may damage your stock charge pipe from the increased boost, especially in map 5.

[e92oholic]

Originally Posted by tc535i

With just a jb4 and exhaust, run map 1. If you're adding ethanol (e85), run no more than 30% and run map 5 to adapt. Like he said, it takes a few pulls to learn the higher octane.

You may damage your stock charge pipe from the increased boost, especially in map 5.

What? Run map 5 regardless, its auto tuning thats what its made for. Your not going to damage the stock charge pipe.



I ran 40%+ with a stock charge pipe using the 15omh modded Jb4 and never had any issues with the charge pipe

[JLGM4]

Originally Posted by e92oholic

What? Run map 5 regardless, its auto tuning thats what its made for. Your not going to damage the stock charge pipe.



I ran 40%+ with a stock charge pipe using the 15omh modded Jb4 and never had any issues with the charge pipe

Alright so what does "autotuning" mean rather than the map 1? is map one just all out power?

[e92oholic]

Originally Posted by jgottsman11

Alright so what does "autotuning" mean rather than the map 1? is map one just all out power?

Dude you need to read. this has all been posted to death. If you don't know what e85 is, or auto tuning maybe you shouldn't be messing around with tuning. Your car is going to have needs once you tune it. You will need to check logs and make sure everything is running correctly. You'll need to be able to diagnose bad coil packs, spark plugs etc. Unless you have money to spend paying shops that really won't know about your tune and set up your gonna be pissed off with a car in limp mode while throwing parts at it and wasting money. Not trying to be a dick but you need to do your own homework.




Please don't ask what limp mode is.

[Jacblack]

He doesn't need an intake, price doesn't warranty the gain on the n55.

[stanlalee]

Originally Posted by jgottsman11

Alright so what does "autotuning" mean rather than the map 1? is map one just all out power?

cut and pasted but you really need to go where Burger Tuning post all this info:

Map 0: Stock bypass. This is the only map you may use the OBDII diagnostic port with. Set to map 0 before dropping off for service, using a BT, etc.
Map 1: 13psi (suggested for most stock applications)
Map 2: 14.5psi (suggested for those with downpipes and 93 octane)
Map 3: Progressive meth mapping with flow sensor failsafe. See guide to enable. Meth use isn't supported/suggested without a flow sensor and map 3.
Map 4: Stock map w/ CAN active. Allows full logging and in dash gauges on the stock mapping.
Map 5: Autotuning map. Boost ranges between 12-17psi based on your cars octane, conditions, and modifications. Fully E85 compatible. If using E85 we suggest around 30% to start. Refer to the E85 FAQ for addl info.
Map 6: User defined map generally only used for diagnostics or troubleshooting.
Map 7: Race gas map. 18.5psi peak boost on the G5 ISO. Requires straight 100-104+ RM2 octane unleaded racing fuel. The expensive stuff. We do not suggest using leaded racing fuel. To use this map with E85 requires the BMS E85 back end flash, inline booster fuel pump, and a 60% E85 mix.
Map 8: Economy / Non-Turbo map. Triggers a 3100 "reduced power mode" code while active. After switching back to a normal map you will need to restart the car for the code to clear.

as for mods after tune you want to start with intercooler, downpipes, JB4 backend flash and intakes if that's your thing. By the time you do that you shouldn't have these questions. Other mods you'll look into are supplementary fuel pump (if using high ethanol content), charge pipe/BOV and finally possibly meth and larger turbos

Before you do anything (after learning the JB4 Maps and settings) read and learn about ethanol and ethanol/pump gas mixing (pump gas is currently e10=10% ethanol/90% petrol, 20% ethanol/80% petrol=e20 and so forth). You'll mix e85 when/where you can find it with 91-93 oct petrol and calculate the ethanol content. Well you wont, you'll come here and the forum will tell you how much to mix. You need to read/learn the pros and cons while avoiding info from those trying to sell it or stop it from being sold. Main things you need to know bad are it has some corrosive properties, your engine needs a lot more of it compared to gas (hence the fuel pump upgrades) and your gas mileage will go to hell so you wont want to overdue it. The good is high octane/knock resistance allows for high boost and timing advance (read more hp and a shit load of torque) so there are a lot of tunes for it (or autotuning/backend flash in your case).

[stanlalee]

By the way if your asking about the car you have listed unless its a 335"is" your in the wrong forum and everything may not apply (2011 335i have single turbo N55). Hope you ordered the right JB4!

[pwr hungry]

Stanlalee...i bet everything you just said went so far over his head.

[pwr hungry]

OP, you need to read through the stickied threads at the top of each forum section and use the search button. When you post questions that have been asked a billion times before, because people don't know what the hell they're doing, you clutter up the forum and waste bandwidth...not to mention, you make it more difficult for the next noob to use the search results. At your level, I guarantee you that everything you need to know/ask can be solved with the search feature.

[pits200]

This car is not going to be good fo him. His first misfire is going to be a $500 fix when all it might be is a coil or plug.

[pwr hungry]

Originally Posted by pits200

This car is not going to be good fo him. His first misfire is going to be a $500 fix when all it might be is a coil or plug.

Also going to get him hurt if his driving capabilities even closely match his car knowledge. Hopefully, he's not a stupid kid with a heavy foot that likes to show off.

[tc535i]

Originally Posted by e92oholic

What? Run map 5 regardless, its auto tuning thats what its made for. Your not going to damage the stock charge pipe.



I ran 40%+ with a stock charge pipe using the 15omh modded Jb4 and never had any issues with the charge pipe

map 5 has higher boost limits, which are well known to blow the plastic charge pipe right off

just search the boards, plenty of people start blowing them over 12-14 psi instead of the 8-9 our cars were built around

[Myrder]

Originally Posted by e92oholic

What? Run map 5 regardless, its auto tuning thats what its made for. Your not going to damage the stock charge pipe.



I ran 40%+ with a stock charge pipe using the 15omh modded Jb4 and never had any issues with the charge pipe

I cracked my charge pipe at 14psi right at the throttle body. So...yea it can happen.

[stanlalee]

Originally Posted by pwr hungry

Stanlalee...i bet everything you just said went so far over his head.

lol you guys aren't going to give him a break are you

Funny thing is I've only had my car since November and while I've built/modified a few cars (1rst and 2nd gen DSM, MKIV and MKV GTIs) I didn't know jack about N54/N55 tuning. I thought a JB4 was a popular flash tune because plug in piggy back tuning was a foreign concept to me. So far the only thing I've bought for my car are coilovers. I've got a pretty good idea of what I'm going to do for power mods but so far all the time between November and now have been researching options and learning paths for the platform. STILL not ready to accept some of the concepts lol (like the a/f ratios that are considered safe with N54s...and I come from a direct injection car).

[tc535i]

Originally Posted by Myrder

I cracked my charge pipe at 14psi right at the throttle body. So...yea it can happen.

Ironic that he tells the original poster to search, everything he's asking is well documented, etc... then he claims the stock charge pipe is fine at high boost

forums, man... forums

[pwr hungry]

Originally Posted by tc535i

Ironic that he tells the original poster to search, everything he's asking is well documented, etc... then he claims the stock charge pipe is fine at high boost

forums, man... forums

Well, he never had problems with his. I never had problems with mine either. In fact, I know a ton of people on here have been cp problem free with their stock cp. The truth is, it's hit or miss. So, you're both right. Now quit bitching.

[Infamy]

Charge pipe should be replaced b4 it blows. Its not if it will blow, its WHEN will it blow. Mine blew at stock levels.

[select99]

today ordering vrsf cp with tial red bov,will post next week with review