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Old 10-28-2019, 05:30 PM
Leonardo352 Leonardo352 is offline
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If I add a turbo, should I get racing fuel after the tune?

I drive a 2007 328xi and I've been considering going through the steps to prep and eventually add a turbo to my car. On the fuel cap (that area at least) it recommends at least 91 at stock. So would it be necessary or beneficial to buy high octane fuel online. Something like 96-100, or would I be wasting my money?
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Old 10-28-2019, 06:22 PM
Nachfolger Nachfolger is offline
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Based on the fact that the N54/N55 doesn't even require a abornally high octane, I can't see a reason to daily drive with 93-94+ octane.

Whether or not you want to hear this, turbocharging a 328 is a laughing matter. Save the money, buy a vehicle equipped to handle the horsepower (M3, 335i).
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Old 10-28-2019, 06:41 PM
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  #4  
Old 10-29-2019, 01:29 AM
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You're never going to drop 10k on a car worth 6k, but in case you do, then yes get some high octane fuel.
Turbo cars will almost always benefit from higher octane gas with the proper tuning.
Turbo cars can benefit from higher octane fuel because they run at much higher pressures than NA cars.
Therefore, timing is pulled in order to prevent knocking. Higher octane fuel is more resistant to detonation, therefore, you can advance the timing with higher octane fuel, thus making more power.
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Old 10-29-2019, 08:37 AM
nsjames nsjames is offline
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Quote:
Originally Posted by Nachfolger View Post
Based on the fact that the N54/N55 doesn't even require a abornally high octane, I can't see a reason to daily drive with 93-94+ octane.

Whether or not you want to hear this, turbocharging a 328 is a laughing matter. Save the money, buy a vehicle equipped to handle the horsepower (M3, 335i).

an n54 doesn't have a 10.5:1 static compression ratio either.

but it does have direct injection, and that helps a whole lot in keeping the knock away since you introduce fuel when you want, and not through the intake stroke.

the tune will determine octane requirements.

the smart money here is to either step up to a 335, or drivetrain swap your 328.
cheaper than turbo fab on a motor that's not very turbo friendly.
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Old 10-29-2019, 09:59 AM
Leonardo352 Leonardo352 is offline
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I will absolutely drop more than 10k on my car. It's not about having a nice car, it's about making the car my own. It only has 130k miles (the least milage in my family surprisingly) and I plan to keep it until it ****s out (hopefully another 6 or 7 years min)

But thank you for answering my question
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Old 10-29-2019, 10:07 PM
pidge1114 pidge1114 is offline
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Why would you drop 10k in 328xi when you could sell the car for 6k and then take your 10k worth of nonsense and buy a properly turbocharged 335i.....with way less than 130k miles.

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Old 10-29-2019, 11:08 PM
Leonardo352 Leonardo352 is offline
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Why would I go through the trouble of selling my car in my small, poor town. Then go through the trouble of finding a ride to go buy a new car, not just any car but a specific bmw. Then dropping money on maintenance to make sure the car is okay. But then it doesn't end there, because there's paperwork for this new car. Also, my car is highkey not worth 6k. I bought it for 4k and I know the previous owner only changed the oil every 25k miles. If you really don't understand this, then at least you can maybe understand the joy of making a car your own. You're literally saying that you don't understand why you mod a car. Why engine swap when you can just buy a car with a bigger engine. Like come one bro
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Old 10-30-2019, 02:34 AM
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So what you essentially have is a very poorly maintained car with over 130k miles, worth about 4k.
You want to drop over 10k to add a custom turbo kit to a poorly maintained high mileage engine that was never meant to be turbocharged.

I'm just trying to figure out which one will go first. The engine, tranny, or the transfer case?
Then what? Drop another 4k on this pile of junk?

I understand you want to mod a car and "make it your own", but in the end, you're just creating a 335i with a JB4 at twice the cost while making it twice as unreliable.

If you want power, get a lower mileage N54 or N55 and mod it. Those can hold much more power.
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Old 10-30-2019, 05:33 AM
pidge1114 pidge1114 is offline
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Quote:
Originally Posted by Leonardo352 View Post
Why would I go through the trouble of selling my car in my small, poor town. Then go through the trouble of finding a ride to go buy a new car, not just any car but a specific bmw. Then dropping money on maintenance to make sure the car is okay. But then it doesn't end there, because there's paperwork for this new car. Also, my car is highkey not worth 6k. I bought it for 4k and I know the previous owner only changed the oil every 25k miles. If you really don't understand this, then at least you can maybe understand the joy of making a car your own. You're literally saying that you don't understand why you mod a car. Why engine swap when you can just buy a car with a bigger engine. Like come one bro
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Old 10-30-2019, 08:02 AM
Nachfolger Nachfolger is offline
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Quote:
Originally Posted by 2NASpec View Post
So what you essentially have is a very poorly maintained car with over 130k miles, worth about 4k.
You want to drop over 10k to add a custom turbo kit to a poorly maintained high mileage engine that was never meant to be turbocharged.

I'm just trying to figure out which one will go first. The engine, tranny, or the transfer case?
Then what? Drop another 4k on this pile of junk?

I understand you want to mod a car and "make it your own", but in the end, you're just creating a 335i with a JB4 at twice the cost while making it twice as unreliable.

If you want power, get a lower mileage N54 or N55 and mod it. Those can hold much more power.
Gracefully worded. The problem is, OP clearly is unable to follow the same logic all of us are following. We're talking about the same type of person willing to straight pipe a 2003 automatic transmission Honda Civic.

Regardless, it's certainly not my money that OP is throwing in the trash.
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Old 10-30-2019, 08:15 AM
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I think we all know by now that this thread is going in the same direction that every other one goes when someone asks about putting a turbo on the N52. It is never going to happen, so we should just quit feeding the troll.
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Old 10-30-2019, 08:57 AM
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The N52 was redesigned into the N54/55 with some very fundamental architectural changes to support the stresses of turbos. While the N52 incorporated some very important design features for a naturally aspirated platform, it was a transition to the fundamental (and apparently permanent) 500 cc's per cylinder turbo designs across the entire line starting with N54/55. They are not the same core engine characteristics.

Everyone here is correct -- the N52 is a poor choice for turbos.

Bu, as always, it's your car and your money. Have at it if you want.
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  #14  
Old 10-30-2019, 10:32 AM
Jbock9 Jbock9 is offline
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I'll turn in my diploma if PV=ZnRT was a lie.. then again, they made me take writing intensive art classes to ensure I got a well rounded education.

Good luck and post a dash cam video when you finish install and get to hammer on it. In my lurking days, I remember seeing someone successfully boost an N52, but kept the pressures pretty low. Didn't produce best bang for your buck in performance. I think of the 328i as the best dang daily driver you could ask for in terms of cheap fun.
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Old 10-30-2019, 10:37 AM
pidge1114 pidge1114 is offline
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I actually say go for it.

Nothing would make me smile more than having this millennial attitude lead to spending 10s of thousands of dollars that turns the poorly maintained car turn into a dumpster fire.

But, you know, he'll be 'making the car his own'. Bro.
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Old 10-30-2019, 10:51 AM
Jbock9 Jbock9 is offline
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Originally Posted by pidge1114 View Post
I actually say go for it.

Nothing would make me smile more than having this millennial attitude lead to spending 10s of thousands of dollars that turns the poorly maintained car turn into a dumpster fire.

But, you know, he'll be 'making the car his own'. Bro.


Could not have said this better myself. At least there will be more parts cars for us to dig through at the junkyard someday.
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Old 10-30-2019, 11:24 AM
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Quote:
Originally Posted by Leonardo352 View Post
I drive a 2007 328xi and I've been considering going through the steps to prep and eventually add a turbo to my car. On the fuel cap (that area at least) it recommends at least 91 at stock. So would it be necessary or beneficial to buy high octane fuel online. Something like 96-100, or would I be wasting my money?
Quote:
Originally Posted by Leonardo352 View Post
"JuSt BuY a NeW cAr"
Quote:
Originally Posted by Leonardo352 View Post
I will absolutely drop more than 10k on my car. It's not about having a nice car, it's about making the car my own. It only has 130k miles (the least milage in my family surprisingly) and I plan to keep it until it ****s out (hopefully another 6 or 7 years min)

But thank you for answering my question
Quote:
Originally Posted by Leonardo352 View Post
Why would I go through the trouble of selling my car in my small, poor town. Then go through the trouble of finding a ride to go buy a new car, not just any car but a specific bmw. Then dropping money on maintenance to make sure the car is okay. But then it doesn't end there, because there's paperwork for this new car. Also, my car is highkey not worth 6k. I bought it for 4k and I know the previous owner only changed the oil every 25k miles. If you really don't understand this, then at least you can maybe understand the joy of making a car your own. You're literally saying that you don't understand why you mod a car. Why engine swap when you can just buy a car with a bigger engine. Like come one bro


"Only has 130K miles". So ~208K km. That's higher mileage. There's no "it only has" to be said here.

So you're prepared to spend more than $10K to make it yours. OK. Why not spend that >$10K on a 335i then ? Then you'll have two BMWs to have fun and tinker with.....

I'm not grasping your logic here. You don't need to sell your car and find another one. Just find the other one and have 2. You'll spend less money in the end, IMO.
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Old 10-30-2019, 11:43 AM
pidge1114 pidge1114 is offline
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I'm anxiously awaiting the snarky response that we're all douches that don't see eye to eye with him wanting to mod his car.

Because he knows better.

I mean, you know, converting to race fuel seems like a long term solution to owning a 10+ year old BMW worth 4k with 130k miles that will likely explode upon slapping a turbo on it.

Last edited by pidge1114; 10-30-2019 at 02:06 PM.
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Old 10-30-2019, 01:07 PM
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I've posted this before, but it bears repeating.

There's a natural life cycle to a forum, similar to things like electronics or pharmaceuticals. People may disagree on the names of the points, but as the people who buy the cars run from "early adopter" -> "new cool thing" -> "solid choice" -> "mature tech" -> "discontinued model" -> "bargain buyers", the tenor of the forum changes with it.

Early Adopter
  • Not many people in the forum
  • Trickle-ins from other forums ("Huh. The model number no longer describes the engine displacement.")
  • Arguments over appearance of new models.
  • Forum may not achieve critical mass to really get going (see current 2-series forum as an example).

New Cool Thing
  • People talking about how they've just seen someone else with one on the road.
  • Early adopters kicking about new model teething issues.
  • Fair number of lurkers who are thinking about getting the car.

Solid Choice
  • Forum growing in size as more and more people own the cars.
  • Possible new buyers asking about teething issues and finding they've been fixed.
  • Enough people own them that "My model is better than your model" wars can break out.
  • A few people get a little chesty over issues, but most people laugh it off. Some don't, and flame wars erupt.

Mature Tech
  • The forum fills with a broad range of people reflecting the bulk of the buyers.
  • Forum acts as a repository of useful and informative information.
  • Most people love the car and want to talk about it and related items.
  • Someone active in the forum has likely seen the most common problems through and can provide actual insight working through fixing issues.
  • Most owners' cars remain under warranty, so things are getting fixed correctly.
  • Early adopters have moved on the the Next Big Thing.
  • Kind of a "family feel", people arranging meetups and events

Discontinued Model
  • Forum fills with people who can now afford the rapidly depreciating vehicles.
  • Many cars are no longer in warranty, and repair costs threads appear more often.
  • "Is this a good first car?" threads appear.
  • Lots of "Oh, jeez, not this again!" threads pop up.
  • "Try using the Advanced Search function" will be a valid answer to >50% of questions asked.
  • Majority of formerly active forum participants move on as they change models.
  • Some old timers hang in, hoping to keep the feel going.

Bargain Buyers
  • High school kids can afford them
  • Repeated "How Can I ..." threads erupt, including
    HCI add boost to a car that has no business having boost?
    HCI boost my car past 700 HP?
    HCI slam my xDrive to 1" off the ground?
    HCI fit 345/15-R24 tires on my car?
    HCI fix this damage with putty and a rattle can of Rustoleum?
  • Most remaining old-timers are bitter about the changes and also want the new people off their lawns.
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Old 10-30-2019, 03:48 PM
ctuna ctuna is online now
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Nice analysis




Last edited by ctuna; 10-30-2019 at 03:49 PM.
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Old 10-30-2019, 03:54 PM
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I've posted this before, but it bears repeating.
I mean.......... .......... ....... Pretty much on point
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Old 10-30-2019, 07:49 PM
dharmabmw dharmabmw is offline
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And by the way, GET OFF MY LAWN
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Old 10-31-2019, 09:28 AM
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Anyone want to start a betting pool if the OP comes back ?

I'll wager three T66 turbos with NOS and a Motec system exhaust (for a Spoon engine).
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