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Old 07-08-2010, 09:15 PM   #1
meteoriteSilverE46
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TURBO PROJECT E46 325I 10-15 lbs

have a 03 325 about to put a rear mounted garrett M27 AR .51 turbo thinking of running around 10-15 lbs of boost...trying to hit at least 400 hp..Got the idea and floor plans from a friend of mind..u might know..he's the producer of the show "Pinks all out"..im just tried to the ricers here in dallas pulling along side of me on the freeway! next time i'll have a surprize for them

any idea what upgrades they have out there to beef up the tranny and rear end?
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Old 07-08-2010, 11:08 PM   #2
E46 S54B32
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sooo whos tuning it? (bet u didnt think of that)

ohh and 10 psi (if you get it tuned) maybe....14 your funny

sorry just the truth
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Old 07-08-2010, 11:10 PM   #3
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14 with a 10mm turbo will work.. hehe
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Old 07-08-2010, 11:26 PM   #4
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have a local guy here in dallas that a turbo gunkie..hes gonna tunning and install everything except the piping...for as the boost..12 lbs on a rear mounted turbo should have me close to 400 hp..rear mounted turbos produce more hp per pound of boost then anyother turbo on the market..just check out STS turbo systems they breaking all type of records..i dont go off of here say..only true stats..and dyno results and STS blows them all away..im just worried about the tranny and rear end.
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Old 07-09-2010, 12:38 AM   #5
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dude honestly he might be a turbo junkie but you have to remember a e46 isnt a honda...theres a reason that its now 10 yrs later that the 1st turbo kit for the e46 non m has come out...

let see what happens to your stock head with 12 psi on a crappy tune...

ill give you 6 psi max running rich/lean on a "tune"

if you have a 5 spd your good for 400+ whp
even if you dont go thru with this reinforce your subframe bc more than likely yours is cracked

im not trying to be rude or an a$$hole im just giving you the heads up
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Old 07-09-2010, 12:51 AM   #6
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most likely gonna do some up grades on the heads..port and polish..high performance springs new valve seeds and a thicker gasket to decrease compression..its a project..thats why im posting..two things can happen,,come out fine or kaboom!!! with tunning u live and die with the unknown..just posting to see if anyone out there turboed a 325i..and what was the outcome and results..that all im trying to figure out..avoiding a problem that someone else already ran across and eliminated.
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Old 07-09-2010, 12:56 AM   #7
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i rather get the turbo kit that is tuned for our cars to be safe than sorry. it seems you wanna upgrade because other people are walkin on you.
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Old 07-15-2010, 11:20 PM   #8
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i rather get the turbo kit that is tuned for our cars to be safe than sorry. it seems you wanna upgrade because other people are walkin on you.
?????
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Old 07-09-2010, 01:07 AM   #9
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honestly your best bet is supercharger or s54

if you want to run the custom turbo get a standalone and with that maybe you can run 10 psi depends how good your friend can tune

upgrade to thicker heade gasket, port and polish, head studs
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Old 07-09-2010, 07:08 AM   #10
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Guys, the M54 head doesn't need to be touched.

Even ported N54 heads flow less than a stock M54...and look at the numbers they are pumping out.
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Old 07-10-2010, 07:20 AM   #11
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Guys, the M54 head doesn't need to be touched.

Even ported N54 heads flow less than a stock M54...and look at the numbers they are pumping out.
In your opinion if installing an ESS TS3 you wouldn't touch the head?
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Old 07-10-2010, 12:11 PM   #12
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In your opinion if installing an ESS TS3 you wouldn't touch the head?
that's a sh!t question.

The ESS tune relies on more open than stock exhaust ports.

Ask a question that adheres more to the flow numbers of the ports compared.

Though I believe PEI, I'm skeptical, based only on studying the ports with my eyes, the n54 ports look far better, like m5x(singlevanos), in some places almost as impressive as s54 ports.

The m54 ports work, I know they make similar whp to the s50/2 with similar setups. Up to PEI and Brady's and my supposed 230ishwhp, it hangs with e36s with similar mods, so it can't be bad technology. But e36s eventually make more power.

There's the example of Karl's m54, I don't know much about it, except that it made too much power. It went beyond what e36 guys ever do. And I have no clue as to how it was done.


To the OP: there's a lot you need to know before you embark on this. Go to bimmerforums. You clearly dont know much about this engine family and how people build it, what has been successful and what hasn't. There is no way you're going to get enough guidance from a single thread posting what you plan. Maybe buy a s13, do that first, in the meantime read about bmw turbo projects. Figure out a tuning solution, take your time. Our engines dont use valve seeds. Learn as much as you can about the single vanos I6 turbo setups, it's the same family.

I think I've done everything you plan to do. To make good decisions at the beginning stage (which is very important), you need to do a lot of research. Sometimes people come out of the woodwork with a turbo project and ace it when everybody expects them to fall face first. Unless you've done a couple dozen turbo projects before, this is going to be difficult, especially if you plan to do standalone tuning.

I appreciate that the idea for this setup came from someone who has some commercial success in a car tv show. But it doesn't mean anything.

I recommend using an existing turbo tuner, the one I used, I think may be the only one. But I wouldn't want anyone else. Consider Technique Tuning if this is something you want done within the foreseeable future and you want it to work without hiccups.
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Old 07-10-2010, 01:04 PM   #13
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Old 07-11-2010, 01:32 AM   #14
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that's a sh!t question.
Thanks, this coming from the guy that JBwelded his control arm on..
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Old 07-09-2010, 08:06 AM   #15
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Any idea how the m52 head compares to the m54 head in terms of flow? (Completely ignoring the other differences between the engines).
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Old 07-09-2010, 08:54 AM   #16
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port and polish isnt necessary but if your already there might as well do it....im pretty sure for 12-14 psi thicker head gasket and studs are needed....i would even throw in lower compression pistons but thats probably out of your budget....
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Old 07-09-2010, 09:02 AM   #17
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I would like to know what shop you are taking your car to. I hope its not a shop that is known for screwing things up in the Plano area.
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Old 07-09-2010, 10:16 AM   #18
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im just [tired] [of] the ricers here in dallas pulling along side of me on the freeway!
this was the reason why it got deleted the first time around and you repost it with same crap? You sound 17.
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Old 07-09-2010, 10:42 AM   #19
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this is a cool project i was wondering how those sts rear mounts would work on our cars!
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Old 07-09-2010, 10:45 AM   #20
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And I really believe that any non-m kit especially the 3-4 out there outside of Technique Tuning's non-m kits are kits that seem like they are not sorted out and in ways detrimental to the motor.

ritos has already done the work you decribe on a 3.0. with somewhat fuzzy results and lots of blowback.

http://forum.e46fanatics.com/showthr...702&highlight=


http://forum.e46fanatics.com/showthr...452&highlight=


ritos has alot of experience maybe you should pm him
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