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Forced Induction Forum Sponsored by Active Autowerke
Discuss supercharging, turbocharging and even nitrous and water injection here.
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Old 03-11-2013, 12:14 PM   #1
fernando95
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whats the cost to turbo?

hey guys i just bought a 1999 328i e46, its faster than my 240 already but i still want and need more power, ive heard to do general bolt ons to the stock m50 block is a waste of time and money, i guess turbo/supercharged is the only way to go, ive been looking around and i cant find the cost of a complete kit, turbo, injectors, intake mani etc.. if any of you guys out there have or know anyone thats turboed a 328 please let me know the pricing and power gain. thank you =)
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Old 03-11-2013, 01:07 PM   #2
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I don't think that there are any turbo "kits" for a 328, i believe active autowerke makes a supercharger system for them and the power gains are listed on their website

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Old 03-11-2013, 01:10 PM   #3
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Going turbo will be a waste of time and money... if you really want to venture down that road, contact Nick G at Technique Tuning.

If you have the cash, buy the active stage 2 kit, headers, meth and an exhaust and call it a day.... with that setup, you'll be looking at something around 375 to the crank.
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Old 03-11-2013, 04:37 PM   #4
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I feel like this is the obvious answer.. but these cars are getting so cheap.. it would be rediculous to buy a $8k-$10k? 323/330/etc throw $5k (at min) to $10k into turboing it to make the same power, less reliably as a stock e46 m3 that sells for the same price these days.
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Old 03-11-2013, 04:47 PM   #5
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I feel like this is the obvious answer.. but these cars are getting so cheap.. it would be rediculous to buy a $8k-$10k? 323/330/etc throw $5k (at min) to $10k into turboing it to make the same power, less reliably as a stock e46 m3 that sells for the same price these days.
Totally agreed, and one overlooked thing will lead to other annoying and expensive issues. I wanted to turbo my e36 328ci but went with a e46 and banked the rest. also coming from a coupe s13, I know your turbo need. But if you really want turbo, the above statements are helpful. Good luck.
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Old 03-11-2013, 05:49 PM   #6
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Totally agreed, and one overlooked thing will lead to other annoying and expensive issues. I wanted to turbo my e36 328ci but went with a e46 and banked the rest. also coming from a coupe s13, I know your turbo need. But if you really want turbo, the above statements are helpful. Good luck.
Not to mention a 323/330 turbo'd probably has even less resale value then one that hasn't been modified.
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Old 03-11-2013, 05:55 PM   #7
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and you'll need a locking diff if you're serious
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Old 03-11-2013, 06:10 PM   #8
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and you'll need a locking diff if you're serious
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Old 03-11-2013, 11:23 PM   #9
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Not to mention a 323/330 turbo'd probably has even less resale value then one that hasn't been modified.
Big time. Wouldn't want you to regret the time and money spent.
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Old 03-11-2013, 11:57 PM   #10
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no regrets here. Just need better support...
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Old 03-13-2013, 03:28 PM   #11
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I feel like this is the obvious answer.. but these cars are getting so cheap.. it would be rediculous to buy a $8k-$10k? 323/330/etc throw $5k (at min) to $10k into turboing it to make the same power, less reliably as a stock e46 m3 that sells for the same price these days.
I have a turbo 323i e46 that will blow the doors off a stock or even a supercharged m3 Just sayin!!!
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Old 03-13-2013, 03:32 PM   #12
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Just noticed no one actually answered your question so I will. To do it right(which by my trial and error) is the only way to do this it will cost you around 20,000 that is a high estimate you could cheap out a little and do it for 15,000. This is a quote for a shop to do it, but you could get it down to around 10,000 if you did all the fab work and install.
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Old 03-13-2013, 03:46 PM   #13
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Technique Tuning stage 2 and call it a day around 7k.....
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Old 03-13-2013, 05:47 PM   #14
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I have a turbo 323i e46 that will blow the doors off a stock or even a supercharged m3 Just sayin!!!
If we're going to talk spending 15k+ then lets talk buying a E46 M3 and dropping $10k to put MaxPSI's kit on it. Still talking anywhere from 25k to 30k out the door and still likely more reliable and faster than the 323 would be. That's not to say your car isnt' reliable, but the MaxPSI is a repeatable (not reputable, although its that as well) kit using common parts, so when/if users have issues they're on a platform with others to share how they resolved it/etc.

That said I know your car is fast, but when you built it the only turbo kit options were significantly more costly than they are now, and likely m3's were also more costly.

I just don't see the point in forging down that path with so many new options in the S54 market is all.
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Old 03-14-2013, 11:18 PM   #15
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Not worth it at all, sell and buy a stock M3. Even if you end up F/I'ed, you'll be missing the "free" and better widebody / headliner / seats / transmission bumpers / exhaust system / suspension the M3 has...
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Old 03-15-2013, 12:02 PM   #16
fernando95
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ive been looking around and it just looks cheaper to do a complete tranny and engine swap. i dont want to ruin the reputation of bimmers so i might just stay with the m50, but my next choice will probably be wapping a rb25det, i know ill get alot of haters if i do but its just more economical, and spare parts are a **** ton cheaer than bmw parts. also i can be boosting around 10psi daily at around 300whp on a stock block. if this is a logical or just a stupid sway let me know. i need some insight on what and what not to do when tuning a bmw, hence my 240 background which is alot different than bmw. and to you bro, i believe it, ive only been in turboed e30 and that blew my head away.
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I have a turbo 323i e46 that will blow the doors off a stock or even a supercharged m3 Just sayin!!!
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Old 03-15-2013, 12:13 PM   #17
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so my question now is. what can i expect to get with basic bolt ons and tuned ecu?(acd performance chip) (header, exhaust, cold air, basic light weight reduction?)
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Old 03-15-2013, 12:13 PM   #18
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so my question now is. what can i expect to get with basic bolt ons and tuned ecu?(acd performance chip) (header, exhaust, cold air, basic light weight reduction?)
minimal performance gain
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Old 03-15-2013, 12:14 PM   #19
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Search for the member named aggie46 and secono330 something like that for both. They went all out N/A without F/I

Personally, not worth it man. I would just get a more powerful car, ie M3.
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