MAF to MAP + OBDI on a S52 Swap - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 01-03-2007, 08:56 PM
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MAF to MAP + OBDI on a S52 Swap

I am seriouslly considering a S52 swap. However, I want to do an OBDI conversion at the same time to unleash a few more horses. I am curious about a couple things involving the engine management system.

1) Will my current ECU be able to work with the S52, I have a 1995 325i.

2) If I need to upgrade my ECU, what ECU do I need?

3) Would It be worth getting a Standalone like an AEM or MOTEC system(I dont like this idea because it means serious $$$$)

4) I am guessing to convert to the MAP system I would need a Stand-Alone system, because I am guessing the s52 obd II system was bases of a MAF sensor.

Thanks



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#2 (permalink) Old 01-05-2007, 01:48 PM
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Quote:
Originally Posted by buuhh99
I am seriouslly considering a S52 swap. However, I want to do an OBDI conversion at the same time to unleash a few more horses. I am curious about a couple things involving the engine management system.

1) Will my current ECU be able to work with the S52, I have a 1995 325i.

2) If I need to upgrade my ECU, what ECU do I need?

3) Would It be worth getting a Standalone like an AEM or MOTEC system(I dont like this idea because it means serious $$$$)

4) I am guessing to convert to the MAP system I would need a Stand-Alone system, because I am guessing the s52 obd II system was bases of a MAF sensor.

Thanks

well heres wat i know...
1) ur ECU wont work
2) probably stand alone is ur best bet, or the ECU from the same motor should work i think....
3)Yes, standalone would definately be worth it, hit up Jason (triggerhappi) he knows a great system
4) not really a question and i dont really understand, both obd1 and 2 have MAF sensors

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#3 (permalink) Old 01-05-2007, 02:40 PM
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When you get the new engine, be sure to also get all the wiring/ECU. Then add OBDI conversion kit.

I think jrhaile did an OBDI conversion on an M52 - try PMing him.

MAP/MAF :wft ??? I don't htink there is anything to discuss here. Both have MAF sensors, and both -- I believe -- use the same MAF housing (3.5")

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#4 (permalink) Old 01-07-2007, 10:17 PM
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I know they use maf, I was wondering if it is worth going to map



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#5 (permalink) Old 01-08-2007, 01:18 AM
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Quote:
Originally Posted by buuhh99
I know they use maf, I was wondering if it is worth going to map
no just do wat i tell u ok

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#6 (permalink) Old 01-10-2007, 01:34 AM
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Quote:
Originally Posted by buuhh99
I am seriouslly considering a S52 swap. However, I want to do an OBDI conversion at the same time to unleash a few more horses. I am curious about a couple things involving the engine management system.

1) Will my current ECU be able to work with the S52, I have a 1995 325i.

2) If I need to upgrade my ECU, what ECU do I need?

3) Would It be worth getting a Standalone like an AEM or MOTEC system(I dont like this idea because it means serious $$$$)

4) I am guessing to convert to the MAP system I would need a Stand-Alone system, because I am guessing the s52 obd II system was bases of a MAF sensor.

Thanks
1. No. When you get the motor make sure to pick up the ECU and electronics associated with it all.
2. The ECU that comes with that motor.
3. Not for N/A in my opinion. Most standaloens are pretty expensive and im pretty sure you're not going ot learn how to tune something like a megasquirt. make everything work well by getting the ECU with the motor.
4. Dont go standalone and you wont hav a problem.

I recommend you just do the s52 swap. Theres a lot more to an OBDI swap than you think. Do the s52 swap and do the m50 intake manifold conversion.

drz, both MAF's are 3".


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#7 (permalink) Old 01-10-2007, 02:02 AM
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