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Guide to B58 Tuning "Stages" and Recommended Upgrades

Guide to B58 Tuning
all right guys we're back staring at my engine  bay and in this video we're going to talk about   the

recommended

upgrade path for your b58 so we're  going to talk about basically the different

stages

   or

upgrades

that you can do to your b58 and about  how much power it can make and kind of just help   you plan out what you want to do with your build  if you kind of have an idea of how all this works   but you just want to see expected power outputs  i'll put that at the end of the video and i'll   split it up based on the fuel type that you're  using and

recommended

upgrades

to get you to 400   500 and then 600 plus horsepower so feel free  to jump to the end of the video if that's   your primary question or what you want to look  at so with the b58 it's not like typical turbo   engines and you're not going to need to do a lot  of

upgrades

that are required for other turbo cars   primarily because our cars have an air-to-water  intercooler and also because it comes with an   extremely efficient and capable cold air intake  from the factory so the first thing that you'll   want to do is flash a stage one tune and the stage  one tune works with a completely stock car you   don't need to upgrade anything you can basically  just run your car as if it had a more powerful   tune from bmw so it won't make any extra noises  it won't have any weird smells or anything that   can come with...
guide to b58 tuning stages and recommended upgrades
you know downpipes and exhausts and  intakes and in that case your car will basically   be just like stock so i feel like that tune is  really underrated i ran stage 1 93 and then a   stage 20 30 map for several months before i really  started upgrading the car to make a lot more power   and it was great i didn't have anything to worry  about it was very under the radar i just could   enjoy the car anytime i wanted to now the next  upgrade is going to be a downpipe and this will   set you up for what most companies call a stage  2 tune and the stage 2 map is going to be pretty   similar to stage 1 but it's going to update  your fueling and your airflow and everything   to account for the additional flow you'll get with  your downpipe it'll help spool the car up quicker   and it will help it hold a little more  power to redline so this will give you   kind of a marginal gain as far as peak horsepower  but you should feel a pretty significant change   when you're driving the car so adding a downpipe  will kind of give you a marginal change especially   when you're comparing it going from stage one to  stage two but it will help the car pull harder you   will see an improvement in your times because it  helps the turbo spool faster and it also helps it   hold more power to redline so that's a relatively  cheap upgrade especially if you can get away with   a catless version to get a little more power out  of...
guide to b58 tuning stages and recommended upgrades
the car now the next upgrade would be a high   pressure fuel pump upgrade and this will allow you  again to turn up the boost run a lot more torque   in the mid-range and a little more horsepower up  top the peak gains are actually in the mid-range   because the turbo spools so quickly that the  high pressure fuel pump allows a lot more boost   in the mid-range but on the top end the stock  turbo still has a tendency to run out of steam   so a lot of times you'll see dinos that show huge  gains between like maybe 3000 and 5000 rpm but up   top you know towards red line the gains are kind  of reduced the car still does pull a lot harder   and just like when you add a downpipe you'll  see a noticeable improvement in your times   so pretty much at this point you've achieved  what the b58 version of an fbo or full bolt-on   would be you don't need an intake you don't need  an intercooler a charge pipe or heat exchanger   all you need are those three mods a downpipe a  fuel pump upgrade and a tune and that'll pretty   much optimize your stock turbo you can always get  a custom tune to squeeze a little bit more power   out of it especially if you don't have ethanol  available and you want to run meth or something   to help you get a little more octane in the car  but for the most part it doesn't really make sense   to get a custom tune unless you're really out  to shoot some record or you're just...
guide to b58 tuning stages and recommended upgrades
hell-bent   on staying with the stock turbo but like i said  the stock turbo always kind of runs out of steam   in the upper rpm so you'll get a lot more torque  in the mid-range as you upgrade your fuel pump and   run different fuels but the end power isn't going  to change significantly now once you're pushing   above stage 2 power you also need to upgrade  your transmission if you have an automatic trans   this is a good time to get the xhp transmission  flash it will allow you to increase the amount of   torque that the transmission can hold and it will  also allow you to update your shift settings and   basically optimize how the transmission works with  your car so that will allow you to hold a lot more   power without any issue now if you have a manual  transmission like me it's a good time to upgrade   your clutch the

recommended

clutch

upgrades

are  to go with the oem clutch from a 335is or 550i   it's the same clutch that people used to upgrade  in their e90s and it's pretty cheap and it works   great and it drives just like stock it just holds  a lot more torque now after that the next step is   a bigger turbo upgrade and that can easily push  the car over 600 horsepower many people are   running over 600 horsepower on the stock engine  without any issues just make sure you have the   appropriate feeling

upgrades

that you need and a  good custom tune and the car will run great now   even with a big...
turbo upgrade the car tends to  handle iats very well so you don't necessarily   need an intercooler upgrade but above 650  horsepower so a lot of people tend to see cracks   in their intake manifold from the additional boost  pressure so it is

recommended

to upgrade your   intake manifold above that point some people are  getting away with it without any issues but it's   kind of hit or miss whether the car will be able  to handle it or not and if you crack your intake   manifold it's just going to cause a big boost  leak so you'll see a significant loss in power   and just to keep everything running well and  not risk damaging anything i would say that's   a good time to start looking at intake manifold 

upgrades

also for people that are pushing above   like 650 foot-pounds it'll be time to build your  transmission for the automatic transmission guys   the default upgraded transmission is made by pure  drivetrain solutions so hit them up get your trans   upgraded and that will allow you to hold 650 plus  torque reliably without an issue there are also   some people that upgrade to the hp 70 trans which  is a cheaper upgrade and it's basically pulling a   trans from the diesel version of our cars it works  and it does hold more torque but it is an older   technology some people have experienced slower  shifts there are also some challenges sometimes   with getting xhp flash to work so it just kind  of...
depends but for the people that are running   it successfully they highly recommend it and enjoy  it it really just depends on your budget and your   needs so yeah those are the

recommended

upgrades

  now i'll kind of just post some charts at the end   of the video so that you can get an idea if you're  shooting for 400 horsepower 500 horsepower or 600   plus this will kind of give you an idea for what  modifications you need depending on the fuel that   you're using and hopefully that helps you kind of  plan out your build so that you can hit your goals   but if you guys have any other questions or  comments feel free to leave them down below thanks you