e23 1981 L - jet into my 1984 533i

[belitwo]

Hey guys. I currently have the motronic e23 84 - 86 turbo set up for about 5 years and have nerver attemptted to intall into my 533I do to my lack of knowledge of turbos But this week I just purchased a complete running e23 1981 turbo L _ jet. And I am not trying to be lazy I have been searching and most that I find is for motronic swap and that is why I am here asking for some guidance please it would be greatly appreciated. Thanks

[marc79euro645]

I had an 81 m30b32 m102 in my original swap. m30b34 is better( more cc's and higher compression). I kept the charge piping from the m102 with the recirculating design BOV.
IMHO Ditch the motronics and Ljet and go Megasquirt .
Scotty Sharpes 745 site is a great resource of info on m102 and m106

http://bmwturbos.scottiesharpe.com/

Good luck
marc

[belitwo]

I had searched this same website with no luck. But finally found it on the 545i section second page. Convertion on from l - jet to motronic.

Thank you Mark. Time to do so studying

[belitwo]

I have one more question the e23 under high RPM the car back fires and RPM neddle goes up and down crazy. What could this be?

[marc79euro645]

AFM maybe. Thats one of the best things about megasquirt, ripping out that **** AFM.

[Brad D.]

I have one more question the e23 under high RPM the car back fires and RPM neddle goes up and down crazy. What could this be?

I have seen this caused by several things. It can be a severe boost leak on an AFM or MAF based system. I would build a boost leak tester and make sure you have NO leaks. It can be igntion blowout which will feel much like a hard spark cut. What kind of gap are you running? This sounds like another case where Megasquirt would make life so much easier.

[belitwo]

The AFM has been messed with I do have AFM from the motronic set up would it work on the l-jet?

And megasquirt would be nice but it looks like a lot of homework.

And what do you mean by gap?

Thanks guys

[belitwo]

AFM. It was guys. I opened it and was able regulate the RPM as they where high and got rid of the back fire and erratic RPM needle.

Thanks a lot. Really appreciate it

[Brad D.]

And what do you mean by gap?

Glad you got it sorted. Sorry I wasn't more clear - I was talking about spark plug gap. Spark blowout from too large a gap/not enough ignition energy will cause bucking and hesitation.