Cleaning Injectors?

[rwh11385]

Mine injectors are clicking, so I'm looking to take care of that.

I was hoping to buy some clean stock injectors, but it would probably be more logical just to get mine cleaned? What's involved, and does it require a machine to do?

?

Off-car injector cleaning is a more expensive service because of the labor involved to remove the injectors (which can be considerable on some applications), and it requires special equipment that can cost anywhere from $4,000 to $8,300.

Many shops charge between $25 and $35 per injector for off-car cleaning - which makes it more costly to the customer than on-car cleaning.

How much would one think it would be if I removed the injectors myself and brought them into a shop.

Am I better off buying clean, used M20 injectors and then selling mine?

Or should I cop out and put in 19# injectors that'd make my OBC inaccurate, and tempt me to use a M30AFM. Is a AFPR necessary for the AFM conversion? ...... thinking dangerously - SMT6/MAF.......

[grlaneriejr]

before you try that, try running a can of Sea Foam through your car. wait until you have maybe 1 or 2 gallons of gas left and put the whole can through your fuel system. if they aren't too bad, this will clean them.

[nando]

Just use your 19# injectors. You should get the same if not better gas mileage once the ECU reduces the duty cycle. either that or 17# M50 injectors...

also, who gives a fuck about the OBC.. is it even accurate to begin with? ;)

[Bryson]

AFPR is not necessary, I set my m30 AFM correctly and tested throughout the RPM band under loads to find no major problems, although it ran a bit rich at WOT all the way through :)

[rwh11385]

I heard Sea Foam mentioned in another thread. I have used injector cleaners before, but to no avail. We'll see.

I thought our ECU's weren't that adaptive. The 173 can get adjusted to 19# is what you're telling me.
Although, now that I reconsider, there is no way I should be thinking about a MAF - I simply shouldn't be spending that kind of $$$ on my engine.

Bryson, what ECU did you have? If I can put in the 19's and a M30AFM and not have to buy anything else, I'll do that.
I'm thinking my ECU could probably adapt. It started running better and more efficent a week or so after I put Jim Conforti in. It got used to it.

Thanks guys. I'll just use the 19# I guess with a big AFM.

[KenC]

I heard Sea Foam mentioned in another thread. I have used injector cleaners before, but to no avail. We'll see.

I'd say give sea foam a shot. It's like $5 per can, it can't hurt.

[rwh11385]

I heard Sea Foam mentioned in another thread. I have used injector cleaners before, but to no avail. We'll see.

I'd say give sea foam a shot. It's like $5 per can, it can't hurt.

True True. I'm going to that thread now.

[Saul325is]

Like Bryson said, an AFPR is not necessary, and when i did the M30AFM conversion w/mustang injectors it really took some hard driving and long drive for my ecu to adapt. Although I had a 153 ECU so it might have taken a bit longer.

-Saul

[Bryson]

I had the 173 ecu... the motor and computer are going in my brother's car which will probably get 17lb 4 pintal m50 injectors to couple with the m30 AFM. I had to move the settings inside my AFM to get it to work perfectly (very easy)

[windsor318is]

this "clicking" your talking about is as soon as you have the key in the "on" position before start up correct??? i was wondering what the fuck that was.........

P.S. dude dont even both pulling them off, most places have that expensive machine, it cleans them right on the car, it will probably cost around 50US, and 1/2 hour of your time.

[rwh11385]

Alain......Nooo? It makes a noise during high rpms, or when I rev. It's sorta of like tapping valves but it is not. I don't know what makes noise before the engine starts......?

It's going to be $5 for some Sea Foam, and then find me a M30 AFM and I'll use my 19#.

[nando]

you guys think it's really worth doing the M30 AFM? I've had one sitting around for months (it'll plug right in too), I'm just not entirely convinced it will make any difference, plus I'd have to buy a K&N cone filter, unless there's a way to make the factory airbox work.

[rwh11385]

you guys think it's really worth doing the M30 AFM? I've had one sitting around for months (it'll plug right in too), I'm just not entirely convinced it will make any difference, plus I'd have to buy a K&N cone filter, unless there's a way to make the factory airbox work.

you saw Dave Adam's difference right? I mean if you remove restrictions of course it will help a lot. The AFM is the bottleneck right? ....choking the air supply.

I dunno, but I hope to find out. I'd think the engine more or less would pull stronger a little, and have better response. I mean like intake, exhaust, headers, they all remove some restriction, but the most important is probably that AFM's heavy door.

If you don't want it, I'll take it off your hands..... ;) I can find a spare 325i intake box, and might try to hack it to fit, but I dunno.

[nando]

yeah, i've just heard stuff about choppy acceleration and poor mid throttle response. Of course the same people also said 19# injectors would ruin my engine :P

[rwh11385]

Dude, stop hanging out on ______ . I bet those DF's didn't let the M30AFM adjust......or worse, were running M30AFM's on their etas.

Bryson used one, how'd it run?