Miller maf

[digger]

Eventually, and sort of. Also, each time your battery dies, or gets disconnected, you start from square one.

but how often does that actually happen, rarely in my experience?

[digger]

Not true, you can run a stock car with the 19# injectors, the DME will self adjust. It improves fuel economy as it has a better atomization rate/spray pattern.

i have used 19# and it did not improve economy over a recondition set of stock ones, it all sounds good in theory though.

Given that most e30 owners are cheap its not an unreasonable thing to do, but far from ideal, they are as big as i would use on a stock engine.

[u3b3rg33k]

but how often does that actually happen, rarely in my experience?

It usually happens right after my car passes tech, and the negative terminal is just loose enough that everything shuts off when I turn the key. Probably the worst time for your car to have to re-learn that it's injectors are 5# too big.

[MR 325]

People need to stop putting 19's in stock motors. The M50 17's are the perfect upgrade and you don't need more than that.

[AnimalE30]

Alright, so the 17lb injectors will work fine with the M20, after the car adjusts to them?

Would buying a FPR,and turning the fuel pressure down a notch help? I think the stock FPR is set up for 3.5 bar or something? so run 19/17lb at 3.0 bar?

Ive just been gathering bits and pieces of information from a bunch of different threads. Let me know if i'm completely wrong.

Sorry for the thread jack.

[digger]

People need to stop putting 19's in stock motors. The M50 17's are the perfect upgrade and you don't need more than that.

actually you don't need more than the stock ones, just make sure they are good..........easily the best option.

[digger]

Alright, so the 17lb injectors will work fine with the M20, after the car adjusts to them?

Would buying a FPR,and turning the fuel pressure down a notch help? I think the stock FPR is set up for 3.5 bar or something? so run 19/17lb at 3.0 bar?

Ive just been gathering bits and pieces of information from a bunch of different threads. Let me know if i'm completely wrong.

Sorry for the thread jack.

Motronic should have no dramas running 17lb but why do you need even them on a stockish M20? Alpina used stock ones for more than 200hp

no use getting an adjustable FPR complete waste of money, and stock is 3b B25 and 2.5b B27

[LowR3V'in]

There's a dyno of a stock m20 running mustang 19# yellow tops.
I think his air fuel ratio was in the 10:1.

Know what things do before messing things up ppl. :)

[Predzy743]

Kamotors.. How difficult is the install?

[AnimalE30]

I've just seen a few people comment on the stock injectors running on the lean side/working as hard as they can at WOT.

Isn't it bad for the injectors to be maxed out at wide open throttle? The point of upgrading the injectors would be making the car as healthy as I can.

Also - what's it take to wire the Maf into the car? Just find a 12v source?

[E30Nova]

It's just internet hearsay.

Do you think BMW would really release a car that had insufficiently sized fuel injectors?

Trust me, I bought the "best" chip and 19lb injectors and noticed absolutely no gains in power/torque. I just gained a higher rev limit.

If you really want to make the car "healthy", get the MAF conversion kit.

IIRC, all you need is a 12v source and splicing a wire at the DME.

Matt

[digger]

I've just seen a few people comment on the stock injectors running on the lean side/working as hard as they can at WOT.

Isn't it bad for the injectors to be maxed out at wide open throttle? The point of upgrading the injectors would be making the car as healthy as I can.

Also - what's it take to wire the Maf into the car? Just find a 12v source?

Those are the people that need to start maintaining their injectors and probably the rest of the fuel system aswell.

[AnimalE30]

Oh okay, that makes sense. I'll just rebuild the stock injectors and look into the miller Maf - stock injectors should be paired with the maf correct?

Thanks for all the help guys.

[kamotors]

Kamotors.. How difficult is the install?

30 minutes. just need to solder a 12v the use some hose clamps to attach the MAF, plug it in and drive away.

[u3b3rg33k]

Is yours the latest revision? I was hoping that it would be 100% plug and pray (err, play). ie, no soldering.