19lbs/M30 AFM - any considerations I'm forgetting

[rwh11385]

Nando is shipping the AFM to me tommorrow, with the air filter. I have Bryson's 19#ers with new O-rings. What else should I be including, or need?

Should I think about cleaning the injectors a little before they go in, and how?

I plan on building a heatshield, hopefully in a week or so. Also a bracket to hold the AFM if needed.

Are there any other considerations I should be considering? ;)

p.s. Death to clicking injectors!

Although, I have the feeling the valves may also be a little loud, so I may adjust them. And use Jordans' advice of putting it in 5th and rolling the car forward and back. My driveway and a helping hand would make a lot easier than turning the crank using other methods.

[KrayZE30]

You should prolly clean the injectors with mineral spirits. Yea, when I did my valve job, I put my car into 2nd or 3rd, and rolled the car so that certain valves would open. If you study the rocker arms, you should find an exhaust and an intake valve that you could adjust at the same time with the crank being in that certain position. This should cut your time down in half.

Good luck with your porject.

-Sean

[Jand3rson]

Re: 19lbs/M30 AFM - any considerations I'm forgetting

Nando is shipping the AFM to me tommorrow, with the air filter. I have Bryson's 19#ers with new O-rings. What else should I be including, or need?

Should I think about cleaning the injectors a little before they go in, and how?

I plan on building a heatshield, hopefully in a week or so. Also a bracket to hold the AFM if needed.

Are there any other considerations I should be considering? ;)

You're probably going to want to get yourself an adjustable fuel pressure regulator.

[rwh11385]

Josh, Bryson said it wasn't necessary. 8)

Even though Dave showed 2 more rwhp with the AFPR tuned, I don't merit it worth $100 used or more new.

[bmwannabe]

what kind of gains are you expecting? can anyone attest to this mod? From what ive heard, it doenst provide much.

[rs4pro3]

You don't have to have the regulator but it would help right now with my 19lbers I have the fuel pressure at 38 psi which is inbetween 2.5 and 3.0 bar. But I didn't do the AFM swap so, 3.0 may do with the more air going in.
Only problem I've had is you have to get the ecu to readapt to the injectors if you ever unplug the battery it dosn't take as long as the first time but it's annoying either way. I don't know if other people have had this problem or not.

[nateb]

I've got the M30 AFM /w K&N cone and heatshield installed in my eta. The gains are not much but the throttle response is noticeably better and the engine growls a lot meaner. Definitely worth the trip to the salvage yard. Be careful when taking the screws out of the old AFM chip, two broke on mine and I had to glue half of the chip in.

Good luck.

p.s. here are some pics of mine installed....

http://forums.bimmerforums.com/forum/showthread.php?t=208614&highlight=M30+AFM

-nate-

[rwh11385]

what kind of gains are you expecting? can anyone attest to this mod? From what ive heard, it doenst provide much.

Dave Adams did it, and attested to it with dyno graphs.
5rwhp for injectors + AFM swap, and the gain were all over the curve.




I dunno if he had a chip in or not, but gains should be a little better with advanced timing I'd think. But I just want more or less to replace my clicking injectors, and the upgrade of the M30 AFM is cheap enough.

5rwhp for under $150 is enough bang for buck for me. Not as sweet as 15hp for $125, but still nice. After this, I swear I want to keep it stock until the time I can turbo it.....or get another ride (in like 3-4 years, hopefully).

The M30 AFM is plug & play, and it has an air filter, and hopefully the heatshield with made this not a warm air intake.

[diegom6]

The only recomendation that I can give you is, try to dissconect your battery the day before putting the the larger injectors, once is done let the ecu adapt at the new injectors flow. If you replace stright the injector with out dissconecting the battery( I recomend you for some hours) the idle will go to the hell.

[TCD]

If you replace stright the injector with out dissconecting the battery( I recomend you for some hours) the idle will go to the hell.

Diego,
This is incorrect. It takes the ecu all of about 5 seconds to adapt to the injectors. I have tried many different size injectors and the ecu adapts almost immediately. I never disconnect the battery just to kill power to the ecu.
Todd

[diegom6]

If you replace stright the injector with out dissconecting the battery( I recomend you for some hours) the idle will go to the hell.

Diego,
This is incorrect. It takes the ecu all of about 5 seconds to adapt to the injectors. I have tried many different size injectors and the ecu adapts almost immediately. I never disconnect the battery just to kill power to the ecu.
Todd

I did what you do or did in the past and just my ECU couldn't adapt to the new injectors, niether letting it for some serious time. (More than 1-2 hrs.)

It's weird

[X2theZ3]

Hey guys,

Isn't a larger or custom intake boot necessary or can the stock one be stretched?

[mspiegle]

If you're gonna turbo it, you might as well get a RRFPR.

I suggest the BEGI 2025, but the newer 2035 looks really cool too.

[mspiegle]

The stock one can be stretched (so i've heard), but I found another boot and used a piece of a metal pipe to connect it together.

Here's a pic. Forgive my crude bracket, but I wanted to test it first:

http://www.nauticaltech.com/~mike/index.php?object_id=176

[Saul325is]

what kind of gains are you expecting? can anyone attest to this mod? From what ive heard, it doenst provide much.

I have done the M30 AFM and 19lb injectors. You cant really feal anything at low RPMS, nor driving around the city. I noticed the throttle response the most (thats why i did the conversion), and the extra top end gain (not to mention the noise :)). I paid 50 dollars for my conversion thats why I did it. Its not worth buying an AFPR. Your 3.0bar fpr is good enough. Oh yeah, and easing your injectors into your ECU is such shit, just redline it around a few times and it will ease in. Dont hastle with buying an air fuel ration gauge, just dyno your car with lamba and you can adjust your spring rate from there. Good luck with the conversion

-Saul