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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 > B3S Biturbo FBO+ stage 2 turbos.. timing drops!? Log inside



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      07-13-2014, 07:48 AM   #1
lfelunden
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B3S Biturbo FBO+ stage 2 turbos.. timing drops!? Log inside

http://datazap.me/u/lfelunden/b3s-3-...1-3-4-11-18-19

Mods are:
Vargas Stage 2 turbos w/ gtx wheels
AMS intercooler
AR Design catless downpipes
ER chargepipe
Forge DV w/ yellow springs
Car runs with a remap

Looks like the AFR gets too high and makes the timing drops
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      07-13-2014, 10:28 AM   #2
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That's interesting issue. Did it just start? Any history? Could it be your fuel trims/adaptations?
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      07-13-2014, 12:20 PM   #3
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Octane? Who is tuning it?
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      07-13-2014, 02:01 PM   #4
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Quote:
Originally Posted by e92_enthusiast_1
That's interesting issue. Did it just start? Any history? Could it be your fuel trims/adaptations?
I have just gotten a new engine trans and the upgrades installed. Everything works flawless.
It's just that timing drop. I'm running V Power 99 RON ~ 94 oct.
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      07-13-2014, 02:21 PM   #5
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Try a different map and see if the problem persists
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      07-13-2014, 03:24 PM   #6
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off topic how do you like those VVT turbos, im getting them with GTX wheels also soon.
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      07-13-2014, 03:48 PM   #7
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Quote:
Originally Posted by 11SEC
Try a different map and see if the problem persists
I run Map 0.. Only remap. I'm using the JB4 only for logging and for meth.
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      07-13-2014, 03:49 PM   #8
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Quote:
Originally Posted by 4doorbmwpower
off topic how do you like those VVT turbos, im getting them with GTX wheels also soon.
That's what I got, seems like they spool rather quick, I can't tell if I got stock turbos or bigger now.. When I had RBs no gtx wheels, I could feel the lag
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      07-13-2014, 03:54 PM   #9
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Try a different remap is what I meant
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      07-13-2014, 04:55 PM   #10
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Quote:
Originally Posted by 11SEC
Try a different remap is what I meant
I think I will reset adaptions and try.
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      07-13-2014, 05:01 PM   #11
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Quote:
Originally Posted by lfelunden View Post
That's what I got, seems like they spool rather quick, I can't tell if I got stock turbos or bigger now.. When I had RBs no gtx wheels, I could feel the lag
thats what i was wanting, i feel the VVT turbos would suit my needs better. All in all would you say you like them more than your old RBs?
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