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Forced Induction Forum
Discuss supercharging, turbocharging and even nitrous and water injection here.

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Old 04-02-2017, 10:15 PM   #21
Alpine-E39
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^^^ I get what you mean, but I've always been more satisfied doing things myself. I know there will always be faster cars on the road and I'm OK with that. But... my car is a heck of a lot more fun to drive because of the twin screw. I rarely bring it to redline, and that's one thing I think people considering a centrifugal blower should know, you will have to rev high to feel the extra power. (I have a vortech on my Jeep)


That being said I think rear mount turbo is the way to go. Weld flange in place of muffler, run the charge pipe to the front, no intercooler... Waalaa!
Unfortunately there isn't much room for the charge pipe on an e46.

Nitrous and turbos are fun but are generally less predictable while cornering/exiting.

(OP) My true vote, save your money's, keep it N/A and ring it's neck.

Last edited by Alpine-E39; 04-02-2017 at 10:35 PM.
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Old 04-03-2017, 07:31 AM   #22
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^ ye i hear ya.. i've done all the usual mods intake headers pullies diff swap.. and my original intention was to simply go for a remap and be happy with ( probably around) 328i performance.. but i just dont think thats gonna be enough for me .. so the supercharger im thinking of buying is supposed to improve performance at low end torque ( i know by the nature of a supercharger its not gonna be LOW end torque) but the feedback im getting here suggests otherwise?

Has anyone done similar mods to me and been happy with a remap ? What we talking REALISTICLY here .. about standard 328 power?

Also, for the kit im thinking of buying, why would i need to be changing the plugs and coils ? The sc psi is supposed to be suitable for a standard 323i.. mine only has 65k on it ..

Last edited by indee321; 04-03-2017 at 07:40 AM.
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Old 04-03-2017, 08:11 AM   #23
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Originally Posted by indee321 View Post
^ ye i hear ya.. i've done all the usual mods intake headers pullies diff swap.. and my original intention was to simply go for a remap and be happy with ( probably around) 328i performance.. but i just dont think thats gonna be enough for me .. so the supercharger im thinking of buying is supposed to improve performance at low end torque ( i know by the nature of a supercharger its not gonna be LOW end torque) but the feedback im getting here suggests otherwise?

Has anyone done similar mods to me and been happy with a remap ? What we talking REALISTICLY here .. about standard 328 power?

Also, for the kit im thinking of buying, why would i need to be changing the plugs and coils ? The sc psi is supposed to be suitable for a standard 323i.. mine only has 65k on it ..


if you want LOW end torque, go with the twinscrew SC


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Old 04-03-2017, 09:14 AM   #24
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^ thanks

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Old 04-03-2017, 01:00 PM   #25
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Yep.. now im looking at twin screw! If your gonna do it , do it in style i guess

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Old 04-03-2017, 01:34 PM   #26
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You should swap to 3.0l first
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Old 04-03-2017, 01:45 PM   #27
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Not being Debbie Downer, but a dose of reality might be needed at this point,,

a) OP has a 323 BMW
B) Was thinking a centri sc at $4300
C) Now is thinking a twin screw at $6850

All for a 17 year old car that sells for 2K to 4K$ everyday, something is lopsided here if you get where I'm going.

Many different options come to mind, like selling the 323 and buying a much better starting platform.
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Old 04-03-2017, 03:30 PM   #28
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Originally Posted by SK330ci View Post
Not being Debbie Downer, but a dose of reality might be needed at this point,,

a) OP has a 323 BMW
B) Was thinking a centri sc at $4300
C) Now is thinking a twin screw at $6850

All for a 17 year old car that sells for 2K to 4K$ everyday, something is lopsided here if you get where I'm going.

Many different options come to mind, like selling the 323 and buying a much better starting platform.
a) YAWN... heard it all before bud.. i have a 323 so what.. its a 325 and despite its age its immaculate with 65k on it.
b) stage one twin screw from ess $5350 and a bit less when converted into uk pounds

c) CLEARLY this is not going to make economic sense. How often does it make economic sense to do this to the e46 at all these days ? And yet here we all are..
Im doing this because i have the money to spend and its my 'personal' pride and joy project, ive transformed the car and learnt alot on the way doing most if not all the work myself. Its a self indulgent pleasure spend that will dramaticlly improve the performance of what i have. tbh im soooo sick and tired of reading ' buy an m3 or 330i' when any kind of mod advice is bought up by anyone of us 'unfortunate' fanatics that is sad enough not to own one of the 'esteemed' platforms.

I got no intention of selling a perfectly good car anytime soon.. i had my e36 for 12 years ( e30 before that) and here in the uk they've enjoyed a revival and sold it for pretty much what i bought it for.

I'd like to believe your advise was genuine and sincere but suspect not, prob just a chance to sneer. So please , take it elsewhere not interested...



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Last edited by indee321; 04-03-2017 at 03:36 PM.
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Old 04-03-2017, 03:37 PM   #29
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Since you know what you're doing, i say go for it!
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Old 04-03-2017, 03:50 PM   #30
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Well, i wouldnt be on here if i completely knew what i was doing lol i dont pretend to be an expert in anything ..im on a learning curve and thats why im here asking the question.. sorry if i came across as narky its not my intention, youve offered some interesting and helpful advice / options.. its just extremely irritating when threads get to the inevitable 'by a different car 323 why bother'. Yes sure i wouldnt be getting as much hp as if i did own a 330.. but im getting proportional hp arent i ? anyways.. thanks for your input

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Last edited by indee321; 04-03-2017 at 03:52 PM.
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Old 04-03-2017, 04:15 PM   #31
SK330ci
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I was trying to give solid advice (imo) based on all variables, if using a ess twin screw TS1 you will see these real world numbers on a 323.

ESS TS1;
"Horsepower: 280 DIN (Stock 170)
Torque: 345 NM (Stock 245)"

17% loss;
Stock WHP for a 323 is typically,, 140
TS1 WHP,, 232

Stock wheel torque is about,, 151
TS1 wheel torque is about,, 212

So for $5300 you get 92 whp and 61 wtq, these are best case based on everything being optimized.

Personally i'm not offended if you're not interested in my nitrous suggestion, but i will tell you that i have about 75 whp and 90 wtq all for less than $1200. Yes i have to occasionally refill my bottle, i'm totally good with that.

I want you think about this (not meant to be snarky or mean), if we both had perfect 323's and you had a TS1 and i had my nitrous system, i'd walk away from the TS1 because of my 90 wtq number.
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Last edited by SK330ci; 04-03-2017 at 07:22 PM.
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Old 04-03-2017, 04:20 PM   #32
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Originally Posted by indee321 View Post
a) YAWN... heard it all before bud.. i have a 323 so what.. its a 325 and despite its age its immaculate with 65k on it.
b) stage one twin screw from ess $5350 and a bit less when converted into uk pounds

c) CLEARLY this is not going to make economic sense. How often does it make economic sense to do this to the e46 at all these days ? And yet here we all are..
Im doing this because i have the money to spend and its my 'personal' pride and joy project, ive transformed the car and learnt alot on the way doing most if not all the work myself. Its a self indulgent pleasure spend that will dramaticlly improve the performance of what i have. tbh im soooo sick and tired of reading ' buy an m3 or 330i' when any kind of mod advice is bought up by anyone of us 'unfortunate' fanatics that is sad enough not to own one of the 'esteemed' platforms.

I got no intention of selling a perfectly good car anytime soon.. i had my e36 for 12 years ( e30 before that) and here in the uk they've enjoyed a revival and sold it for pretty much what i bought it for.

I'd like to believe your advise was genuine and sincere but suspect not, prob just a chance to sneer. So please , take it elsewhere not interested...



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ey bro doit.... my e39 born 523i (m52TU) and now I have 325WHP and a 3.0 motor and a MS43 DME (I stroke my engine)
also I did a automatic to manual transmision swap......


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Old 04-03-2017, 04:38 PM   #33
indee321
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I am interested in nitrous and ive been looking at kits.. bang for buck its easily the better deal and im not ruling it out at all.. and im not one of these people who think its dangerous etc.. but a constant 100 whp gain ( my headers , high flow cats and inlet manifold etc must count for 8 whp ) has to be a serious consideration, and its the low down torque and throttle responce of a twin screw thats particuarly appealing.. i think i could tackle installing a ts system im not feeling so confident with the nitrous , which would incur additional costs.. but $1200 is certainly 'sencible' compared with $5300 and as you say , you'd walk away.. hmmm im back on the fence ! I guess im gonna look into ways of controlling a nitrous boost ( what ive read so far suggests there are various ways to do this) as that is a big factor of personal preference and would possibly win me over if i can controll it the way i imagine i'd like

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Last edited by indee321; 04-03-2017 at 04:41 PM.
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Old 04-03-2017, 06:27 PM   #34
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Best bang for buck is swap to 3.0l and have it tuned for the mods you have. May take some research but for the most part should be plug and play. If you brought it to a shop and had them swap it out they probably wouldn't even know. Although it may not start or run right without the 3.0 ECU maps.
I've seen them in the US go for under $500.
I wouldn't pay the 5k+ for the ESS.
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Old 04-03-2017, 07:20 PM   #35
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I want you think about this (not meant to be snarky or mean), if we both had perfect 323's and you had a TS1 and i had my nitrous system, i'd walk away from the TS1 because of my 90 wtq number.
And then the next drag-race he'd squash you because your "shot" was empty, or you didn't press the button in time.

Or if you drive your car on twisty roads or road courses, well, he'll have a lot more fun than you will.

Just sayin
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Old 04-03-2017, 07:35 PM   #36
SK330ci
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And then the next drag-race he'd squash you because your "shot" was empty, or you didn't press the button in time.

Or if you drive your car on twisty roads or road courses, well, he'll have a lot more fun than you will.

Just sayin

I wish you lived closer, i would just dial my system up and meet you at the track.
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Last edited by SK330ci; 04-03-2017 at 10:48 PM.
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Old 04-14-2017, 11:02 PM   #37
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Dear OP, I like your moxy. Great work throwing time and money at your project.

You've seriously kept your local parts store busy with all that bolt on love. Hear me out though.

The dude is right. The ESS kit is a waste of money. Why do you hate money? If you want to throw more $ at your 323, drop an m54b30 in it and then hit the parts counter again for all the bolt on love.

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Old 05-04-2017, 11:31 AM   #38
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Do appreciate the advice but my 323 has 60 (now 62k) on it and well maintained. Ive decided if im gonna do it , im gonna go with a twin screw because of the low end of acceleration bennefits and to be honest i think i'll be happy enough with 280-300 hp that will give. Its not a daily driver only driven for pleasure really as i have a bike and a motor home. The thought of swapping out the engine with all the potential issues and problems just isnt worth my time and effort to be honest , im not after crazy HP its just street use.. ( lol hate money )

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