323 L jetronic to ?

Post Thu Jun 04, 2009 12:05 pm

I've been trying to make a decision how to go about sticking an L jetronic 323 lump into a facelift shell.

I don't have the 2.3 afm, loom or ecu so it leaves my options open.

There's a 320 chromie being broken near me, so I can source an engine loom, but i'd still need an afm & ecu.. This begs the question if its possible to use the motronic loom / suitable afm & ecu? as I have a few of these..

Anyone know the can's and can'ts??

cheers in advance..

Post Thu Jun 04, 2009 3:49 pm

you´ll need to retrofit the timing wheel on to the front of the crankshaft,
rest is just bolting 325/320i bits on the engine.

Post Thu Jun 04, 2009 4:12 pm

Gunni wrote:you´ll need to retrofit the timing wheel on to the front of the crankshaft,
rest is just bolting 325/320i bits on the engine.

is that all? I did think it'd be quite simple

Post Thu Jun 04, 2009 7:21 pm

well the only real difference is the intake manifold and vacuum setup.

Post Thu Jun 04, 2009 9:09 pm

how about an appropriate ecu? I have 2.5 and 2.0 ecu's, I imagine the 2.5 will overfuel and the 2.0 not supply enough..

Post Thu Jun 04, 2009 9:28 pm

well that´s an assumption.

Run the 2.5 ecu and the 325i AFM + 325i injectors,
The AFM will meter the air going in correctly and fuelling will not be off.
While it can be off during WOT. trick is to disable the WOT switch on the TPS.

Post Thu Jun 04, 2009 9:32 pm

wide open throttle?

Post Thu Jun 04, 2009 11:03 pm

Post Fri Jun 05, 2009 2:19 am

you're a very helpful man Gunni, just the prod needed, I may tap you for a few more prods

Cheers v.much though

Post Fri Jun 05, 2009 6:53 pm

I've got a Motronic ECU with an Ant 2.3 chip. Yours in exchange for some folding.....

Post Fri Jun 05, 2009 7:58 pm

StuBeeDoo wrote:I've got a Motronic ECU with a Ant 2.3 chip. Yours in exchange for some folding.....

ooh right, what does the ant bit do Stu, are there any details?

Post Fri Jun 05, 2009 10:50 pm

Barx325i wrote:
StuBeeDoo wrote:I've got a Motronic ECU with a Ant 2.3 chip. Yours in exchange for some folding.....
ooh right, what does the ant bit do Stu, are there any details?

Nooooo! Ant off here - the Dude from A-Tech. One of the things he does is write chips. He does one for use when converting 323is to run on Motronic.
I was going to build such a 2.3, but the plan got binned and I've still got the ECU.

Post Fri Jun 05, 2009 11:46 pm

StuBeeDoo wrote:
Barx325i wrote:
StuBeeDoo wrote:I've got a Motronic ECU with a Ant 2.3 chip. Yours in exchange for some folding.....
ooh right, what does the ant bit do Stu, are there any details?
Nooooo! Ant off here - the Dude from A-Tech. One of the things he does is write chips. He does one for use when converting 323is to run on Motronic.
I was going to build such a 2.3, but the plan got binned and I've still got the ECU.

sorry, yes fully aware of Ant and his chip writing talents, we talked about this very engine last year in fact, but at the time I was all up for keeping it L-jetroninc.. Is the one you have a standard tune 2.3 ecu?

Post Sat Jun 06, 2009 10:26 am

Barx325i wrote:
StuBeeDoo wrote:
Barx325i wrote:ooh right, what does the ant bit do Stu, are there any details?
Nooooo! Ant off here - the Dude from A-Tech. One of the things he does is write chips. He does one for use when converting 323is to run on Motronic.
I was going to build such a 2.3, but the plan got binned and I've still got the ECU.
sorry, yes fully aware of Ant and his chip writing talents, we talked about this very engine last year in fact, but at the time I was all up for keeping it L-jetroninc.. Is the one you have a standard tune 2.3 ecu?

Yes. AFAIK it's just a "mild" spec. (I don't think he does a "wild" one). As I said, I never got the chance to try it. Plenty of people rate Ant's chips though.

Post Sat Jun 06, 2009 11:26 am

k, well I'm armed with all the info I think. PM sent to you Stu..