Basically can it work?

If the fuelings right could you allow a knock sensor to retard the timing.

 

You want to run an engine without a MAP sensor and rely on knock to retard the ignition timing

 

ECU still needs to know the load on the engine, either a MAP or a MAF will be needed.
tabetha

 

Sorry i'l add a little more info.

I'm supercharging (low boost) a n/a engine.

I'm going to add extra fuel but can't retard the timing with no map sensor or no management to support it.

If the fueling is right will the standard igntion map be ok just relying on the knock sensor to retard the timing.

It's a cheap engine. (costs less than management) so not too worried about meltdown.
Its also a second car so i dont rely on it.

 

Yes perfectly, it will just need mapping purely on load sites, ie ignitioon and fuel, just will not have fine adjustments made by sensors that's al, but bog std stuff if map is right, and a hell of a lot eaier with the add on bits.
You may want to buy "ENGINE MANAGEMENT", by DAVE WALKER, who also does his own brand ECU and mapping.
He writes in the mag PPC, and is a god of all things tuning wise, as well as a great bloke and a 100% no bull artist.
He business partner KARL is the elctronic techy man, who desiged the ECU.
tabetha

 

Thanks for a quick responce. Sound like an interesting read. I'll have a look for that.

I'm going to get myself the Innovate LM1 this should hopefully keep it meltdown free for a while.
I'l post progress when things start coming together.

 

The book is by HAYNES, book no H835, ISBN number 1 85960 835 3.
RRP £17.99
car shops etc that do HAYNES can always order it for you, or phone Haynes on 01963 440635.
tabetha

 

Will the car work with the N/A ignition map? You might get lucky.

Can you rely on the knock sensor to adjust the timing? Hell no!


Please put a mappale management to take care of the ignition. This can be had for around 100£.

 

Car will not produce any useful power with the ignition settings of a non forced induction engine.
If it is mapped on the fuel you always use a knock sensor will not be needed, and does not control timing like this.
tabetha

 

The best way is to decompress the engine to avoid knock.

If you realky dont want to use mapsensor you can use even TPS but it is not good way.

You can retard ignition when throttle is open more then 30% (more or less it depend when your turbo starts to make boost) and at rpm when turbo starts to make boost

but.. map sensor is so cheap that it is stupid to dont use it, first of all mapping will be much easier with map sensor