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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > jb3 question



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      09-24-2009, 01:34 AM   #1
john boxter
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jb3 question

can i safely run map 5 with just a dci and catless downpipes no intercooler? or am i stressing out the turbos to much? i know an intercooler allows me to run the same power on less boost but now im raising the boost is that going to be a problem with out it? i dont want to take risks or anything like that if its to risky please tell me thank you very much everyone!
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      09-24-2009, 01:40 AM   #2
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you can run map 7 with that setup and 93 octane.
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      09-24-2009, 01:40 AM   #3
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Yes, you can! you can run map 7 as well...with dp's and dci...
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      09-24-2009, 01:59 AM   #4
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Map 7 Ftmfw!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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      09-24-2009, 02:03 AM   #5
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the only problem is that you will heatsoak faster on map 7 , you will notice this if you do lots of pulls but for normal driving the car will be much faster.
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      09-24-2009, 06:53 AM   #6
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really and is it much a jump for map 5-7? i noticed it does not say any psi increase just air fuel ratios what you think noticable faster on 7?
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      09-24-2009, 07:05 AM   #7
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Map 5 is about 14.5 Psi and map 7 15.5 psi.
However you will pass the 110F IAT temp quick if you push it constantly and the PSI will drop a lot.
As i said before for daily driving is fine to run map 7 with NO IC with occasional WOT.
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      09-24-2009, 08:51 AM   #8
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Enrita is right on

Run either or, map switching is easy enough
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      09-24-2009, 10:59 AM   #9
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i wish we could switch maps on the fly like procede terry has to come up with a switch like he used to have
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      09-24-2009, 11:02 AM   #10
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You can its called the tuning gauge, definitely worth the money.
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      09-24-2009, 11:20 AM   #11
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naw to much money
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      09-24-2009, 11:21 AM   #12
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oh well used as a gauge to is not bad your right i guess
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      09-24-2009, 11:26 AM   #13
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Quote:
Originally Posted by john boxter View Post
oh well used as a gauge to is not bad your right i guess
+1 It shows boost, IATs, lets you create your own map and switch between them on the fly.
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      09-24-2009, 11:35 AM   #14
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wait it shows iats? and when you say create your own map you mean set a prexisting one right?
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      09-24-2009, 11:58 AM   #15
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Nope, I mean there are settings you can tweak to essentially create your own map. Check out n54tech.com for all the details but you can set things like boost, throttle sensitivity, A/F ratio, etc. Also, yes it can display IATs.
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      09-24-2009, 12:02 PM   #16
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Quote:
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Nope, I mean there are settings you can tweak to essentially create your own map. Check out n54tech.com for all the details but you can set things like boost, throttle sensitivity, A/F ratio, etc. Also, yes it can display IATs.
+1
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      09-24-2009, 12:04 PM   #17
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The boost gauge is a must have if you run jb3, i actually miss it now after GIAC flash.
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      09-24-2009, 12:15 PM   #18
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Quote:
Originally Posted by enrita View Post
The boost gauge is a must have if you run jb3, i actually miss it now after GIAC flash.
Come back to JB3 lol


Map switching often is seriously overrated. You test a a few maps to see which you like and you set it there. Your foot controls the power. I went from map 4 to 7 and i havent touched it in forever! Map 4 was nice, map 7 worked properly/healthy/strong in my car so i stuck with it.
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      09-24-2009, 01:13 PM   #19
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how long you been on map 7? and how many miles have you had the jb3 in for total?
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      09-24-2009, 01:15 PM   #20
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i have been running fully modded map 6-7 for about 20.000 miles before changing to GIAC. never had a limp or problem.
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      09-24-2009, 01:18 PM   #21
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thats awesome!!! im scared to go to map 7 daily i feel like its to much stress on a stock core like pistons and all that can the stock block handle 400 whp if i do meth and full upgrades?
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      09-24-2009, 01:19 PM   #22
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and just on the turbos and engine isnt map 7 to much stress for daily use?
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