Emerald crew - how's your cold start mapping now it's nippy?

[Pupp]

Mine's starting readily enough, then dying immediately. Then starting easily and running ok (on IACV plus auto ign adapting). Fuel compensation on IACV or initial richness?

[hiltonig]

Not good, wasnt good when it was hot !!, and Dave told me I didnt need a bypass valve.Would like to know what other 500s with Emerald are set too ?

[450Nick]

Mines running just fine as it's just been remapped. I have found though that it is easier to do the cold start with the charger as more air is being forced in at idle. You just crack the IACV open around 52/3% and a bit of fuel and it goes pretty well. It seems a bit rich at idle at the moment though (around 12AFR) so I may take a bit of fuel out and add a bit of advance to see what it does.

[Pupp]

450Nick said:

so I may take a bit of fuel out and add a bit of advance to see what it does....

I'm getting a sense of de ja vue

[Uncle Fester]

No IACV fitted on mine, it’s all done on timing.

I planned to see how it goes this winter before deciding if I need to fit it.

When I crank it doesn’t fire unless I just touch the throttle. This is ideal. I crank without firing on purpose a couple of times to ensure good lubrication around the engine. Then I fire. It always fires when I mean it to.

For about 30 seconds the idle may need some minor support from me on the throttle, or it may stop. After that, it’s fine. The only other thing is it may be difficult to drive smoothly for about 500 yards, if I drive straight off. Then it’s perfect on its own.

In practice it’s never an issue because I by the time I have closed the garage door, it’s warmed up enough to be smooth.

[hiltonig]

Mr Fester , thats exactly how mine is , except when i get out of the car to closed the garage door it usually stalls, but once its warm its fine. Glad I am not alone in this

[450Nick]

Pupp said:

450Nick said:

so I may take a bit of fuel out and add a bit of advance to see what it does....

I'm getting a sense of de ja vue

Ah yeah, well it was very rich before, but that turned out to be the staggeringly rubbish cam timing meaning it just wasn't using any fuel! I now have an AFR gauge on the dash and a new AFR system which actually reads properly so I can monitor it. The vast majority of the map is sorted, but the idle is probably a little richer than it needs to be. Many mappers seem to make it rich as it gives a very easy and strong idle. It's a little more tricky to do closer to 14 AFR but it's possible with the IACV and a bit of patience

[Uncle Fester]

hiltonig said:

Mr Fester , thats exactly how mine is , except when i get out of the car to closed the garage door it usually stalls, but once its warm its fine. Glad I am not alone in this

I simply roll the car out the garage.

Much of the time I actually wait until I am ready to go before starting the engine, then drive off ASAP.

But thats because I come and go at silly hours. The neighbours have kids in bed, so I keep noise to a minimum.

Besides which, another neighbour owns a Chimp.

He comes running out thinking someones nicking his car at 3am. He's not best pleased.

[Ballistic Banana]

Mine starts fine in the cold and idles well (no IACV installed). Mr Walker set it up beautifully

BB

[spend]

Uncle Fester said:

But thats because I come and go at silly hours. The neighbours have kids in bed, so I keep noise to a minimum.

Report submitted

PS answer the poor blokes question about HIDS neither you or Tubs have answered him... ETA: too late

Edited by spend on Saturday 15th November 22:54

[hiltonig]

BB it would be of interest what your cold start settings are,

[MADMAX2]

Uncle Fester said:

hiltonig said:

Mr Fester , thats exactly how mine is , except when i get out of the car to closed the garage door it usually stalls, but once its warm its fine. Glad I am not alone in this

I simply roll the car out the garage.

Much of the time I actually wait until I am ready to go before starting the engine, then drive off ASAP.

But thats because I come and go at silly hours. The neighbours have kids in bed, so I keep noise to a minimum.

Besides which, another neighbour owns a Chimp.

He comes running out thinking someones nicking his car at 3am. He's not best pleased.

A solution to that is fit the talking reverse noise so when you reversing out of your garage your neighbour will hear "this vehicle is reversing....bip.bip.bip. this vehicle is reversing..... and he will go back to sleep knowing his pride and joy is safe!!

I live in a quiet cul-de-sac on the edge of civilisation and the neighbours love me starting my chim up at 7am every morning they have all thrown their alarm clocks away i wake them all up lol!!!

Edited by MADMAX2 on Sunday 16th November 09:18

[Ballistic Banana]

hiltonig said:

BB it would be of interest what your cold start settings are,

What info would you like, I will have a look later and get a note of settings?

BB