Turbo without fuel management?

[DanTheMannn]

Heyyy,

Right, Sometime I'm going to be turboing my m20, This may be a year away or months away, who knows.

What is the bare minimum i need to have?

Also, Do i HAVE to have a fuel management system? or will it still work without but just run rough at idle?

-Dan

[ross2009]

you can just run a rrfpr but thats very primitive and you wont get the most out of the engine and will also be prone to det

tuning on a turbo car like this is paramount

what you doing about ignition ?

both fuel and ignition really need to be able to be changed along with a wideband afr to check your af ration isnt to weak or to rich to weak and you could have det to rich isnt as bad but still needs to be bang on

[maxfield]

If you're not going to run a management system...

How will that engine know you've bolted a turbo to it? And where's the extra fuel coming from?

If you're doing a job, do it properly.

[DanTheMannn]

I'm asking are you able to run it without, Management systems are the most expensive bit that i am aware of (turbo not an issue)

Whats the cheapest management i can use then?

[leeparkes]

I thought you could buy an eprom chip for low boost M20's?

[DanTheMannn]

That would be ace if you can?

[ross_jsy]

Why don't you save a bit more and do it properly instead of lashing something together?

[ross2009]

Why don't you save a bit more and do it properly instead of lashing something together?

^^^^^^^^

THIS

[DanTheMannn]

I'm saying can it be done,

A lot like saying can you jump off the empire state building with no parachute and not die? Doesn't mean i want to do it, but I'm simply asking if it's possible.

[ross2009]

yeah is possible but for you asking it means your thinking about doing it cheap

[jimmyspeed]

no ones saying it can't be done, just that the engine management is an very important factor

a build your own megasquirt is your cheapest option for a standalone - or have a look on ebay


people are saying do it properly because - A- it will run better and be a lot more efficient
B- once you have lunched your turbo and spat shards of metal all throughout the cylinder head , intercooler, oil pump , oil cooler, block and whatever else, its going to cost you a lot to redo it and then have to buy an ecu anyway

if your not to bothered about the engine - go with rrfpr like ross said for the fuel and maybe use the old fashioned centrifugal/weighted distributor to adjust the ignition timing - preferably fitted to a later low comp block

[DanTheMannn]

Right, that's more clear,

I'm just getting a rough idea at this stage, I've heard megasquirt works well so More than likely go with that but just having a nose about!

Cheers fellas.

-dan

[Speedtouch]

Some Russian guy posted on here a while back, showing how he'd fitted a turbo to an old L-Jetronic chromey 320i.

It worked fairly well, IIRC.

[Shaheenk]

Yes it can be done .

You dont need a management system up to 0.6 bar, but you do need something to provide extra fuel

My car ran on a hop switch/Pressure switch for many moons without issues.Basically you need to plumb an extra injector into the system prior to the intake monifold. Wire the pressure switch to turn the injector on at 0.3bar, below this your RRFPR should be able to handle the boost.

Its old school, it's very on off, you never know if the extra injector is actually firing (unless you fit a light to the inside of the car) and its heavy on fuel when on boost. But it works.

A slightly less obtrusive system is a hop switch connected to a micro fueller which does the work of the extra injector or you get stand alone units which control an extra injector.

All options , all options that I ran in my car, all work.