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[325i-ight]

I have two 96" Porsche 993 twin turbos one of which I want to put on my 93 325i (if possible)the other is for sale if anyone's interested.
If anyone knows if this is possible please help me on what I need to do first or where I could go for tech help. I live in Houston so if anyone knows of any good turbo shops around here post somthin'.
Any help is greatly appreciated.

[///95M3]

why don't you just put both on your 325!!!

[325i-ight]

Originally posted by ///95M3
why don't you just put both on your 325!!!

I heard its really hard to keep tuned plus i have a motor w/ 103k on it so I just want to do one with low boost (5-6psi) to be safe.

[///MCubed]

I suggest you pick up Corky Bell's book "Maximum Boost", this will give you an idea of what will be involved in adapting this turbo to your car. Of course, you have to know certain things like the size of the turbo or A/R, compression of your engine, target HP, etc. for you to do this properly. Then you have to size your other components like intercooler and tubing and purchase other parts like exhaust manifold and other such things. Then you have the fuel management aspect of it (whether you do it with software and larger injectors or a fuel pressure regulator RRFPR or stand alone engine management). Pretty much what I want to say is that it is easier said than done. Hope this helps.

[///95M3]

I'm calling AA on friday for all the details for their Stage II kit for my 95 M3. Everybody says it's easier said than done, but I'm sure the end result will be overwhelming so I can't wait!

My car has 77K miles but it was serviced the right times and kept very well and never driven in the winter(I believe the guy too). Si hopefully the 11 or psi from the turbo will hold up well.

[325i-ight]

Thanks for the adv. I was thinking 'bout gettin that maximum boost book, guess there's no real shortcut than doin' it the old fashion way and learn and understand what your doin first. Thanks again man and good luck w/ your AA turbo, if this get's too complicated that's going to be my next choice.

[Brad D.]

Originally posted by 325i-ight
Thanks for the adv. I was thinking 'bout gettin that maximum boost book, guess there's no real shortcut than doin' it the old fashion way and learn and understand what your doin first. Thanks again man and good luck w/ your AA turbo, if this get's too complicated that's going to be my next choice.

Corky Bell's book will tell you alot about turbocharging in general, but not alot about BMW specifics.

1) LOW PSI-No worries..you may be able to run stock timing maps..most turbocharging places don't modify timing maps for 4-5psi. If you DO need to modify timing maps, Split Second makes an excellent timing controller for OBD 1 and 2 cars that allows boost specific timing map control.

2) Fuel- You could get by with a rising rate fuel pressure regulator at this boost rate. (Vortech makes a nice one.) Just make sure you are dumping in enough fuel..shouldn't be a problem at low boost levels.

3) HFM Clamping- Your HFM is going to max out at 5 volts when you apply boost to the air stream. (Depending on how much boost you plan on running..) If you DO max out the HFM this is where you start running into problems, and the computer CUTS fuel instead of supplying more. You will need a Clamp (like the HKS unit) to prevent this from happening.

4) Blow by or suck through? You need to decide if you are blowing through the HFM (like my setup) or if you are going to suck through it...Blow through for emissions reasons..otherwise suck through..Suck through will require that you Blow Off back into the system rather than to atmosphere...

All I could think of right now..pretty sick...sorry.

[325i-ight]

Damn, everything I wanted to know and a bag of chips! You now have 53 votes. Thanks