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      02-03-2013, 12:42 AM   #1
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JB4 and BMS intake added on my 335Is

Hey guys,


Just added JB4 and BMS dual cone intake to my 335Is. I'm running on Map 1 and wow! the difference is pretty amazing, love it so far.

I have a few questions.

I would like to go up to map 2 at least, I spoke to the BMW mechanic that installed the intake and JB and he recommended that I change the Chargepipe and always run on 93 octane which I already do, besides the chargepipe anything else i need to add to run on map 2?

Few things i've noticed so far, It seems like when its in manual mode the car shift by it self sometimes and when i have it on sport and I step on the throttle sometimes there is a bit of a stall for less then a second then it picks up. The mechanic I spoke to told me that that happens meanwhile the engine gets used to it.

Also I know that in order to know my current HP and torque numbers i have to dyno the car but does anyone has an idea of around how much i'm roughly pushing now with JB map 1 and a BMS cold air intake (93 octane) ?


I'm new to all this lol so w.e advice you guys can give me would be highly appreciated.
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      02-03-2013, 01:11 AM   #2
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to run map 2, downpipes and 93 octane are "required". For the charge pipe suggestion, you technically dont need one. I would get one if 1. Diverter valves arent holding boost properly 2. if you want a Blow Off Valve/ meth bungs 3. OEM charge pipe pops off.

you can hook up your jb4 to a laptop and configure your "lagfix" which will help with hesitations as it will spool up the turbo a bit quicker. Though your car shouldn't hesitate too much. I would play around with map 5 as it will auto-tune depending on your mods. Its usually alot faster then map 1. It should also be safe for a relatively stock car.

hp increase id expect from map 1 is around 40-50 HP. so maybe around 310-320hp to the wheels. guesstimate.
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      02-03-2013, 04:28 AM   #3
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You can run Map 2 with an 335is & 93 octane fuel without anything additional on the car. That being said if you have 93 or better octane available run 335IS Map 6 on either the G4, G5 or G5/ISO boards.

On a Dynojet (CF: STD Smoothing 5) pure stock the IS will pull about 319WHP on 93 octane. You should get 360/365WHP on Map 6 with 93+ as the car currently stands.
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      02-03-2013, 05:04 AM   #4
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Quote:
Originally Posted by idrift4wd View Post
to run map 2, downpipes and 93 octane are "required". For the charge pipe suggestion, you technically dont need one. I would get one if 1. Diverter valves arent holding boost properly 2. if you want a Blow Off Valve/ meth bungs 3. OEM charge pipe pops off.

you can hook up your jb4 to a laptop and configure your "lagfix" which will help with hesitations as it will spool up the turbo a bit quicker. Though your car shouldn't hesitate too much. I would play around with map 5 as it will auto-tune depending on your mods. Its usually alot faster then map 1. It should also be safe for a relatively stock car.

hp increase id expect from map 1 is around 40-50 HP. so maybe around 310-320hp to the wheels. guesstimate.
When you say i would play around with map 5 what does that mean? run it on map 5? I only have an intake and 93 octane.
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      02-03-2013, 05:06 AM   #5
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Originally Posted by BEAR-AvHistory View Post
You can run Map 2 with an 335is & 93 octane fuel without anything additional on the car. That being said if you have 93 or better octane available run 335IS Map 6 on either the G4, G5 or G5/ISO boards.

On a Dynojet (CF: STD Smoothing 5) pure stock the IS will pull about 319WHP on 93 octane. You should get 360/365WHP on Map 6 with 93+ as the car currently stands.
cool!, what are you currently running?

what mods do you recommend i add next?
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      02-03-2013, 09:21 AM   #6
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what mods do you recommend i add next?

downpipes hommie
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      02-03-2013, 11:28 AM   #7
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Connect the jb4 to a laptop and make sure the it's configured for 1M/335is. That will mean the custom map6 settings are preloaded. Then run map 6. That's what I use and its far better than map 1 or 5. I have virtually the same mods.
Goto the n54tech site a read up. That'll help you out a lot too.
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      02-03-2013, 11:33 AM   #8
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Put it on Map 5 and do a few wide open throttle pulls to let the JB4 adapt to your mods, octane, and atmospheric conditions. Did you connect the USB cable? If not, buy one and do some logs through your laptop.

For now - you can monitor timing on your oil temp to get a sense of how the car is responding.
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      02-03-2013, 01:20 PM   #9
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Its very lightly moded just the JB4 & a 5" ETS FMIC. Don't go to the strip much anymore & I just wanted something a little quicker then stock. If you ndon't have to deal with state emissions testing downpipes will add up to 20whp & in Fla an aftermarket FMIC would be a good plan because the stock one heat soaks very quickly. Best dynojet on 96 octane 375whp & 414ftlbs

BTW both downpipes & FMIC can cause you warranty issues at the dealership.
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      02-03-2013, 03:09 PM   #10
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Quote:
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When you say i would play around with map 5 what does that mean? run it on map 5? I only have an intake and 93 octane.
Exactly run map 5.

it will adapt to your mods so it will safetly increase or decrease boost.

you can run map 5 with any mods. map 2 "requires" downpipes.
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      02-03-2013, 04:05 PM   #11
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Quote:
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Exactly run map 5.

it will adapt to your mods so it will safetly increase or decrease boost.

you can run map 5 with any mods. map 2 "requires" downpipes.
the 335is engine does not require DP's with if you have quality 93 octane available only the 335i requires it for Map 2. On the custom Map 6 for the IS developed by Terry my peak boost is 16.5psi without DP's using 95/96 octane fuel.

This log is the stock 335IS 93 octane Map6 +1 PSI across the board. Map 2's peak is 14.5, it goes back to the slower timing advance in the 335is. The faster advance curve of the 335i does require downpipes.

The log is after Terry did some tweeking for a slight stumble off the line. The tweek has been incorporated into later firmware versions. My dyno numbers are from the G4 board & an early version of the IS Map6 so I don't know what the G5/ISO is putting down other then its a lot smoother.

If I was running an e85 mix I would move to Map5 because it can adjust to the octane content of the fuel. I can run straight 93 with my setup but am willing to pay a bit extra for the insurance of the higher octane gas.
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      02-04-2013, 03:34 PM   #12
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Kevin,

I've been running map 5 on my now broken in IS w/DCT and I had to back down to e30 because of trims (not enough fueling per Terry) Guess I need the BMS flash.

Any way, my map 6 settings that come preloaded say 15.0 psi. Yours on map 6 is 16.5 psi?
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      02-04-2013, 03:55 PM   #13
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Kevin,

I've been running map 5 on my now broken in IS w/DCT and I had to back down to e30 because of trims (not enough fueling per Terry) Guess I need the BMS flash.

Any way, my map 6 settings that come preloaded say 15.0 psi. Yours on map 6 is 16.5 psi?
I know you're asking someone else this question but what do you mean you had to go back down to e30 because of trims?
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      02-04-2013, 04:37 PM   #14
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I know you're asking someone else this question but what do you mean you had to go back down to e30 because of trims?
im guessing he means he had to lower his ethanol content, because his fuel trims were maxed out.
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      02-04-2013, 05:32 PM   #15
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Quote:
Originally Posted by mdyates View Post
Kevin,

I've been running map 5 on my now broken in IS w/DCT and I had to back down to e30 because of trims (not enough fueling per Terry) Guess I need the BMS flash.

Any way, my map 6 settings that come preloaded say 15.0 psi. Yours on map 6 is 16.5 psi?
Agree with high levels of E85 you need the backend flash. I ran a few tanks to test it & the car was happy with about 40% total alcohol. You need to remember to count in the 10% in 93 octane premium.

Yes my Map 6 is generally +1 PSI across the board over the default 335is Map 6. I run on average 95/96 octane fuel using a 93+100 mix. I did not want to get involved with E85 (the one E85 station is way across town) & potential fueling issues.

The log I put above in the thread is with the extra psi & the 93/100 mix. Terry said it was good to go. I have been running it since I went to the G5/ISO board

I ran the default map with straight 93 octane on the G4 board. Personally I don’t really recommend anyone stepping up the Maps unless they are willing to do it in stages & send in the logs to be sure you are not screwing anything else. I worked it up 1/2 pound at a time. I also believe with the aftermarket FMIC the charge is cooler & is also a big help when increasing boost.
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      02-04-2013, 06:22 PM   #16
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Quote:
Originally Posted by BEAR-AvHistory View Post
the 335is engine does not require DP's with if you have quality 93 octane available only the 335i requires it for Map 2. On the custom Map 6 for the IS developed by Terry my peak boost is 16.5psi without DP's using 95/96 octane fuel.

This log is the stock 335IS 93 octane Map6 +1 PSI across the board. Map 2's peak is 14.5, it goes back to the slower timing advance in the 335is. The faster advance curve of the 335i does require downpipes.

The log is after Terry did some tweeking for a slight stumble off the line. The tweek has been incorporated into later firmware versions. My dyno numbers are from the G4 board & an early version of the IS Map6 so I don't know what the G5/ISO is putting down other then its a lot smoother.

If I was running an e85 mix I would move to Map5 because it can adjust to the octane content of the fuel. I can run straight 93 with my setup but am willing to pay a bit extra for the insurance of the higher octane gas.
Same goes for the 1M. Map 6 is the recommendation with 93.
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      02-04-2013, 07:23 PM   #17
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^^^ Agree, its also available for cars with the G5/ISO board running the BMS flash.
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      02-04-2013, 07:32 PM   #18
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I'd add 4-5 gllons of E-85 and switch to map 5. As long as you don't go over 45% ethanol you'll be fine. Over 45% and you'll start running too lean which is no fun because of check engine lights and misfires.

If you don't want to run E-85, just stick with your 93 and switch to map 2 or 5 because you'll notice a huge torque/power improvement. Your IS can handle map 2 or 5 with no problem.
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      02-05-2013, 08:55 AM   #19
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Agree with high levels of E85 you need the backend flash. I ran a few tanks to test it & the car was happy with about 40% total alcohol. You need to remember to count in the 10% in 93 octane premium.

Yes my Map 6 is generally +1 PSI across the board over the default 335is Map 6. I run on average 95/96 octane fuel using a 93+100 mix. I did not want to get involved with E85 (the one E85 station is way across town) & potential fueling issues.

The log I put above in the thread is with the extra psi & the 93/100 mix. Terry said it was good to go. I have been running it since I went to the G5/ISO board

I ran the default map with straight 93 octane on the G4 board. Personally I donít really recommend anyone stepping up the Maps unless they are willing to do it in stages & send in the logs to be sure you are not screwing anything else. I worked it up 1/2 pound at a time. I also believe with the aftermarket FMIC the charge is cooler & is also a big help when increasing boost.
Update*

I've been running Map 5 and all I can say is wow! the difference is tremendous. Thanks to everyone for all the help.

BEAR the reason why I quoted your post is because this just made things a little confusing with all the E this E that lol, I always run on 93 Octane but i still dont quite understand what you guys are talking about? should i check for something in particular when I pick my gasoline? Or does every 93 octane gas contain exactly the right amount of "E" I need to run in map 5? haha
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      02-05-2013, 10:03 AM   #20
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Quote:
Originally Posted by Maddict3 View Post
Update*

I've been running Map 5 and all I can say is wow! the difference is tremendous. Thanks to everyone for all the help.

BEAR the reason why I quoted your post is because this just made things a little confusing with all the E this E that lol, I always run on 93 Octane but i still dont quite understand what you guys are talking about? should i check for something in particular when I pick my gasoline? Or does every 93 octane gas contain exactly the right amount of "E" I need to run in map 5? haha
Picking up my new 335is coupe tomorrow, so you would highly recommend this tune and intake? I want to drive the car stock for a little white to get used to the power, it is that much of a difference in power? I to plan to keep it stock aside from tune and intake and 93 octane.
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      02-05-2013, 10:42 AM   #21
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Quote:
Originally Posted by Maddict3 View Post
Update*

I've been running Map 5 and all I can say is wow! the difference is tremendous. Thanks to everyone for all the help.

BEAR the reason why I quoted your post is because this just made things a little confusing with all the E this E that lol, I always run on 93 Octane but i still dont quite understand what you guys are talking about? should i check for something in particular when I pick my gasoline? Or does every 93 octane gas contain exactly the right amount of "E" I need to run in map 5? haha
Most 93 octane gas contains up to 10% alcohol. New US Government regs are allowing this to change to 15% alcohol. The alcohol content of the gas is listed on the gas station pump. You can still get no alcohol 93 from some stations in some areas but it generally very hard to come by.

E85 is a blended fuel that is 85% alcohol & 15% of gasoline. So when you are mixing fuels to get a specific alcohol content you need to remember that premium already has in most cases some alcohol already in it so you can get the correct percentage mix.
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      02-06-2013, 12:11 AM   #22
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BTW both downpipes & FMIC can cause you warranty issues at the dealership.
I have heard mixed opinions on FMIC. Downpipes do cause error codes, but FMIC upgrade is pretty unintrusive. I will be talking to my SA when I go for service next time..

I redid my intake from custom DCI to AFE DCI with Air scoops. I didnt like having air intake being so close to wheel well, and since there is an opening i was concerned with rainy days I may be injesting water. So switched over to AFE DCI which is pricey, but has heat shield, and filters sit directly over the intake manifold. Air scoops should help with piping cool air while moving. Quality of AFE is outstanding, and Jeff from Top Gear has best pricing..

http://www.topgearsolutions.com/afe-...-54-11473.html

What do you guys recommend as far as FMIC go? VRSF, ETS, ER... So many choices my head is spinning. Would like to upgrade FMIC before I bring in additional boost.

Thanks!
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