85 318I injecter upgrade

[mason6556]

hi ok i have an 85 318i and i want to up my injecters but im not sure what i should go with, i want a plug and play type thing but i need to up the power in this car i have read a lot about injectors but im not sure what i should go with so if possable could you tell me what injectors but also how much better they will be, im also planing on putting new performance plugs and wires and maybe a new distributer so if anyone has ideas the best set up i can get by replacing all of that please tell me, thanks

[dogsbark26]

In all your reading on injectors, where did you get the idea that bigger injectors will make the car faster?

Injectors are controlled (the timing and duration of the electrical pulse that results in fuel being squirted) by the vehicle's ECU that is, in turn, being directed by the readings from the O2 sensor. Bigger injectors will simply result in the ECU dialing back (reducing) the duration of the pulse resulting in the exact same fuel / air mixture (as long as all the parts of the system are functioning properly.

Welcome to the forum.

You are probably looking for a 'chip' to install in the ECU.

[mason6556]

ok good to know thank you. so honestly if i wanted to make the car faster what is your top 3 recomendations of things to do, anything but also tell me how much of a power gain the upgrade will give

[bmwm42]

first of get rid of the slug of an m10, two find your self an m50 etc and you will have a fast car there is nothing worth adding to the m10 to make it fast

[mason6556]

ok so say i somehow get enough money to do a engine swap what engine do i put in i do still want some form for decent gas milliage

[bmwguy325is]

Going fast and decent 4 popper millage do not go together very well.
There are these things called super chargers and turbos. I say get both Group B rally guys pulled it off. SO you get power down low and up high YAY
oh you may get with this guy

http://www.r3vlimited.com/board/showthread.php?t=221659

He wants a cheap go faster M10 too

[bmwm42]

get m50 m52 s50 s52 fast and mileage will be up to ur lead foot

[matt0300]

Megasquirt. Turbo. Engine swap. The best three options u have for more power.

[Jaxx_]

Megasquirt. Turbo. Engine swap. The best three options u have for more power.

megasquirt alone will not make you any significant power.

[harv]

Well the deal with a Megasquirt is it will allow you to tune to a richer mixture and thus a little more power. I would suggest Megasquirt first. This will teach you a lot. Then turbo. Other than that it will require a lot of money to make an M10 powerful.

John

[Jaxx_]

Well the deal with a Megasquirt is it will allow you to tune to a richer mixture and thus a little more power. I would suggest Megasquirt first. This will teach you a lot. Then turbo. Other than that it will require a lot of money to make an M10 powerful.

John

it's not like BMW engineers didn't know what they were doing when they tuned the car. The point is you'll only see about 10hp out of megasquirt, but it also has to be tuned well in the first place. One area megasquirt will improve significantly though is drivability.

the real issue with L-Jet is vac advance distro. I don't really notice a significant increase in power up top (it still pulls the same past 4k) but down low it has more torque because of the more precise ignition. Basically, at the end of the day the motor won't magically make 50 more horsepower unless there was something wrong with the tune. You still need to modify the motor in someway because L-Jet is not a significant limiting factor in itself.


and richer doesn't mean more powerful.

[mason6556]

ok guys what is megasquirt and what is required to do it

[Jaxx_]

ok guys what is megasquirt and what is required to do it

megasquirt is a stand alone fuel and ignition management system. it requires you to do a lot of reading and redo the entire wiring for the motor. You'll also need to do some fabrication work and soldering on boards.

If you're comfortable with wiring and electrics you can do it. Otherwise you might want to think about it long and hard.

expect to spend about 40-80 hours on the project after you have all your materials. This includes reading and wiring. There is still lots of time for tuning after you're done with that.

This is a great place to start, you should read it about 3 times before you start wiring it.

http://www.megamanual.com

[mason6556]

thats a little much for me i dont know anyhting about wireing boards and thast a long time to mess something up

[84driver]

Same question:

My fuel injectors are exhibiting symptoms of being clogged. Are there any better injectors than the OEM Bosch for a stock M10? I know M20 owners go to a newer 4 hole pintle style that improves fuel spray and makes for a smoother, cleaner burn.

I've read in a couple places that e30 318i M10 owners have used Mk3 2.0L Golf injectors (VW #037-906-031, Bosch #0280-150-955, 19 lb/hr, 15.8 Ohm). But, those do have a slightly higher flow rate -- and I can't find any information on their design, don't know if it's '4 pintle' or otherwise better. (M10 stock injector is 14 lb/hr, Bosch #0280-150-211, 15.7 Ohm).

I know that flow rate != power, but I would definitely like a cleaner burn, more gas mileage, and smoother power.

I'm happy to clean and refurb the stock injectors with a kit, but thought I'd see if there's a better option first.