3 replies to this topic

[brokenojoke]

I'm thinking about doing this and wanted to talk to somebody locally who has already done it. There are sooo many opinions on engine management that I would love to discuss. I also have some questions about using the stock tranny vs new six speed tranny.

The s54 engine is the obd 2 3.2 liter 333hp Inline six that comes in the e46 M3's for those just reading this randomly.. The obd 1 1994 e36 325is only has a 2.5 liter engine making ~190hp~

I know the new engine and tranny bolt in using all stock bmw mounts, and I'm sure I can handle all that stuff, but the wiring/emissions of the new motor seems misleading... because everybody has a different method to getting it to work. There is no general agrement on which method is best... a stand alone, or a chipped obd1 ecu.

Any info would be appreciated.

[MediumD]

This would be really cool to a BMW enthusiast. There are at least a couple built S50s or LSx swaps around here, but I haven't seen or heard of an S54 swap.

Edited by MediumD, 28 February 2012 - 12:57 AM.

[bignickmetro]

I'd say buy your s54 with a full harness and stay OBDII, and just live with all the check engine lights.

i know most swaps use chipped ecus like the Miller war chips, but i dont know how well theyd do at this altitude. I know you can OBDI a S52, but i didnt think the s54 could run that way since it needs the faster computer.

If you know about electronics you can use a Megasquirt, they are super customizable. you can use basically any sensor you want as long as you configure it in software. could use a GM temp sensor, a e36 cam angle sensor, anything really. good for rare swaps where you wont have a premade harness available. Full control over timing and spark. But you have to be REALLY good with a multimeter lol. Much cheaper than other standalones, like haltech.

[brokenojoke]

Thanks for the info you guys. Megasquirt was fun on my buddys 911 we just did a swap on... so I guess that's a good option if it comes down to it. I just want as much oem feel/comfort as possible. So a stock obd2 ecu woule be ideal...