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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > All-Wheel-Drive (Xi / xDrive) Talk > 335xi vs Mustang 3.7 , something wrong with my N55 xi



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      07-06-2014, 02:21 PM   #1
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335xi vs Mustang 3.7 , something wrong with my N55 xi

Hi guys,

I did a test with my cousin 2014 V6 3.7 mustang this morning .

Mustang : Bama Race Tune 93 octance
Airaid Cold Air Intake
BBK 73mm throttle body
Ford Racing 4.10 Gears

335xi : JB4 93 Octance Map 2
Bms charge pipe
Active autowerck downpipe
Active autowerck intercooler sport version

First run from the 20 roll. I switch to map 0 because i believed with map 0 and all other support mods are good enough to handle the mustang. However the mustang hang around with my xi from 20-70. I only won half car length until we hit 100.
Second run from the stop. I switch to map 2. Im about half car from 0-60. then from 60 - 100 im pulling far but slowly.

I though all those mods are enough to hang with 5.0 GT not the 3.7 Mustang. Is it something wrong with my N55 xi ?

Please enlighten me . Thanks
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      07-06-2014, 02:35 PM   #2
Hokie_BMW
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From my understanding a FBO n54 will maybe hang with a 5.0. Your n55 xi will not. The all wheel drive robs power and the n55 doesn't respond as well to mods as the n54.

But why not throw the jb4 on the 18.5psi auto tune map?
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      07-06-2014, 02:39 PM   #3
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I though Map 2 is better, because i always get quicker response from map 2 than map 5. Do you know any other mod will help ? Beside the E85 and METH
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      07-06-2014, 02:41 PM   #4
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Quote:
Originally Posted by ticaohaha
I though Map 2 is better, because i always get quicker response from map 2 than map 5. Do you know any other mod will help ? Beside the E85 and METH
I don't run a jb4 so I don't know for sure. I just know FBO guys usually use map 5 when wanting max power.

You're almost FBO from the looks of it. Dci and exhaust are minimal gains so you don't have much to gain without e85/meth.

But it takes a large hp difference to really put lengths on someone quickly.

E85 would take care of it running an e30-e40 tank most likely. I've not run e85 in my personal car as there's no stations around but have driven one and the power bump is pretty significant.
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      07-06-2014, 02:48 PM   #5
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I should have bought the "i" not "xi" . I was consider the E85 , but to drive around and find the gas station that has E85 is not so convenience. Next stop maybe Meth kit for my car .
Thanks a lot for helping me Hokie.
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      07-06-2014, 05:15 PM   #6
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Quote:
Originally Posted by ticaohaha
I should have bought the "i" not "xi" . I was consider the E85 , but to drive around and find the gas station that has E85 is not so convenience. Next stop maybe Meth kit for my car .
Thanks a lot for helping me Hokie.
Race him from a dig haha. Then the xi will come in handy!

But no problem
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      07-06-2014, 09:28 PM   #7
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On map 0, the race seems about right. He was probably making more power than you when you're on map 0 considering the mods he has, plus his car is lighter.

On map 2, though, I think you should've raped him.
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      07-06-2014, 10:05 PM   #8
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Is this post a joke? From my research a 2014 Mustang V6 with Bama tune and 4.10 gears is going to run about a 13.6 in the quarter mile. Best case scenario is a 13.3. My 2009 335i xdrive with catless dp's and FMIC upgrade ran a 12.3 114mph. With my E40 map I ran a 12.1 @ 116mph. This is not even a race. My dad has a 2014 Mustang GT and I rape him in from a roll and severely rape him from a dig. My cars 0-60 is 3.7 seconds. No freaking way a V6 stang can even be discussed in the same conversation as ours where performance is concerned. I say get your car checked or maybe driver error perhaps.

http://www.e90post.com/forums/showthread.php?t=904396
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      07-07-2014, 02:00 AM   #9
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But it looks like he has an n55 car. It would be slower than your car.
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      07-07-2014, 04:11 AM   #10
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Quote:
Originally Posted by SaviorXi
Is this post a joke? From my research a 2014 Mustang V6 with Bama tune and 4.10 gears is going to run about a 13.6 in the quarter mile. Best case scenario is a 13.3. My 2009 335i xdrive with catless dp's and FMIC upgrade ran a 12.3 114mph. With my E40 map I ran a 12.1 @ 116mph. This is not even a race. My dad has a 2014 Mustang GT and I rape him in from a roll and severely rape him from a dig. My cars 0-60 is 3.7 seconds. No freaking way a V6 stang can even be discussed in the same conversation as ours where performance is concerned. I say get your car checked or maybe driver error perhaps.

http://www.e90post.com/forums/showthread.php?t=904396
This.

I ran a stock 5.0 from a low 10-15mph roll and we were neck and neck, both pulling slightly on each other as we went back and forth. All I have is a Cobb Stage 1 and DCI.

A tuned 335 should mop the floor with a v6 stang
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      07-07-2014, 09:45 AM   #11
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Yes i have N55 model, as Hokie said it not response well to mods. To :"saviorxi" im not joking man, it is real. Im so sad the N55 xi is not that good with almost FBO.
Yesterday i test it again with 2 different car . A stock new model Camaro RS and new 328i. It was an easy walk on Camaro . But, when i test it with friend new 328i with slightly mod. again my Xi is not pulling far from him, it just one and a half car length a head from 60 to 130
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      07-07-2014, 01:39 PM   #12
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I have a 335xi n54 and when I ran jb4 I used map 5 all the time. It auto tunes. You can toss some e85 in there and wake it up too. 3-4 gallons to start. Won't be a big deal if you can't find it from time to time either due to the low % and the auto tune. I may be wrong but that was how I ran it and it worked great!
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      07-07-2014, 04:41 PM   #13
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Before you get suicidal pull codes, do some logs and make sure everything is running right.
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      07-07-2014, 04:42 PM   #14
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Quote:
Originally Posted by Hokie_BMW View Post
From my understanding a FBO n54 will maybe hang with a 5.0. Your n55 xi will not. The all wheel drive robs power and the n55 doesn't respond as well to mods as the n54.

But why not throw the jb4 on the 18.5psi auto tune map?
he's running a v6, not a 5.0
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      07-07-2014, 05:17 PM   #15
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Quote:
Originally Posted by tc535i
Quote:
Originally Posted by Hokie_BMW View Post
From my understanding a FBO n54 will maybe hang with a 5.0. Your n55 xi will not. The all wheel drive robs power and the n55 doesn't respond as well to mods as the n54.

But why not throw the jb4 on the 18.5psi auto tune map?
he's running a v6, not a 5.0
Yes I'm aware. I was making a comparison
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      07-07-2014, 07:31 PM   #16
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Quote:
Originally Posted by ajsalida View Post
Before you get suicidal pull codes, do some logs and make sure everything is running right.
Thanks for the input, but how can i do the "logs" ?.
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      07-07-2014, 07:54 PM   #17
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Quote:
Originally Posted by ticaohaha View Post
Thanks for the input, but how can i do the "logs" ?.
Go to JB4 website, or try here if the link is allowed:

http://www.n54tech.com/forums/showthread.php?t=21269

Basically you have a data logging capacity. I do not own a JB4 so others may chime in. Basic idea with all these tunes (I have Cobb) is you install them, ride around for a bit to make sure nothing seriously messed up is going on, then do some hard pulls while logging a list of key engine parameters to make sure everything is OK. If you cannot beat a V6 mustang I guarantee you something is messed up.

Not sure about if JB4 can do this but also pull engine trouble codes. You can do this on Cobb or with INPA. See if you are getting misfires etc.

Bottom line though sounds like you need to read a lot more about what the JB4 does and how to use it, like which map does what, then get into reading codes (if any), then logging some pulls. Often the first thing happens is misfires due to old plugs.
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      07-08-2014, 05:52 PM   #18
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Quote:
Originally Posted by ajsalida View Post
Go to JB4 website, or try here if the link is allowed:

http://www.n54tech.com/forums/showthread.php?t=21269

Basically you have a data logging capacity. I do not own a JB4 so others may chime in. Basic idea with all these tunes (I have Cobb) is you install them, ride around for a bit to make sure nothing seriously messed up is going on, then do some hard pulls while logging a list of key engine parameters to make sure everything is OK. If you cannot beat a V6 mustang I guarantee you something is messed up.

Not sure about if JB4 can do this but also pull engine trouble codes. You can do this on Cobb or with INPA. See if you are getting misfires etc.

Bottom line though sounds like you need to read a lot more about what the JB4 does and how to use it, like which map does what, then get into reading codes (if any), then logging some pulls. Often the first thing happens is misfires due to old plugs.
Thanks ajsalida. I will read that page and check the code.
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      07-09-2014, 12:25 PM   #19
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Quote:
Originally Posted by ticaohaha View Post
Hi guys,

I did a test with my cousin 2014 V6 3.7 mustang this morning .

Mustang : Bama Race Tune 93 octance
Airaid Cold Air Intake
BBK 73mm throttle body
Ford Racing 4.10 Gears

335xi : JB4 93 Octance Map 2
Bms charge pipe
Active autowerck downpipe
Active autowerck intercooler sport version

First run from the 20 roll. I switch to map 0 because i believed with map 0 and all other support mods are good enough to handle the mustang. However the mustang hang around with my xi from 20-70. I only won half car length until we hit 100.
Second run from the stop. I switch to map 2. Im about half car from 0-60. then from 60 - 100 im pulling far but slowly.

I though all those mods are enough to hang with 5.0 GT not the 3.7 Mustang. Is it something wrong with my N55 xi ?

Please enlighten me . Thanks
I believe the 335xi on map 0 (stock map) is around 13.2 1/4 mile car and the mustang with modes is probably a 13.6 car. so you are talking only half a second difference in the 1/4 mile. You only ran from 20-70. I wouldn't expect you to pull ahead much. You should smoke him with map 2. I have a n54. I would assume the n55 would be very similiar in power with map 2.

BTW, there isn't much performance difference between the xi and the i model. The XI launches harder due to traction (faster 0-60). The I losses a little less HP (only talking about 15 HP or so) due to RWD (It catches back up to the XI by the end of the 1/4. The XI would also be better coming out of corners in a track environment.

Last edited by beetle6986; 07-09-2014 at 12:30 PM..
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      07-09-2014, 05:58 PM   #20
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You're forgetting xi cars weigh approximately 200 lbs more. That is significant
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      07-09-2014, 08:14 PM   #21
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We have a guy here who can't drive all that well running 13.20 in a 6AT 3.7 with exhaust and tune only (dude in OP has TB and gears). The gap between the 3.7s and 5.0s is atypical of the traditional V6 vs V8 Mustang matchup. Still a reasonable gap but they aren't slow.
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      07-10-2014, 08:47 AM   #22
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Quote:
Originally Posted by -Wingman- View Post
You're forgetting xi cars weigh approximately 200 lbs more. That is significant
True. Although I wouldn't call 200 LBs significant. Just having a full tank of gas can net more than 100 LBs difference between 2 cars. I wont even mention the weight of the driver.

Quote:
Originally Posted by ragingclue View Post
We have a guy here who can't drive all that well running 13.20 in a 6AT 3.7 with exhaust and tune only (dude in OP has TB and gears). The gap between the 3.7s and 5.0s is atypical of the traditional V6 vs V8 Mustang matchup. Still a reasonable gap but they aren't slow.
I'm sure the driver's experience is negligible when runnning a 300HP Auto down the strip. 13.2 is probably the average or better with those mods. That is about equal to a stock 335. Probably the fastest N/A 3.7 would have trouble keeping up with your average tuned 335. Not taking anything away from the 3.7. 13.2 is a kick ass time for a N/A 6 cylinder.
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