Hi Guys,

I have the Capa Edit on my ute & would like to fit bigger injectors & intercooler. I'm just curious about what happens once you have a custom tune to suit the larger injectors, will it run rich with the factory tune because the bigger injectors will flow more at any given pulse width/duty cycle than the stock injectors? Or can the ecu cope with the difference via the 02 sensor?

Thanks in advance,

Steve

Hi Guys,

I have the Capa Edit on my ute & would like to fit bigger injectors & intercooler. I'm just curious about what happens once you have a custom tune to suit the larger injectors, will it run rich with the factory tune because the bigger injectors will flow more at any given pulse width/duty cycle than the stock injectors? Or can the ecu cope with the difference via the 02 sensor?

Thanks in advance,

Steve

<{POST_SNAPBACK}>

It will idle

Apart from that it will run RICH RICH RICH ... dont even try it

Thanks F6 Tornado,

So you can't use the factory tune after these mods? Do you just have a sensible, ie: 200rwkw tune for when it goes to the dealer & insist that they don't reflash it?

cheers,

Steve

Thanks F6 Tornado,

So you can't use the factory tune after these mods? Do you just have a sensible, ie: 200rwkw tune for when it goes to the dealer & insist that they don't reflash it?

cheers,

Steve

<{POST_SNAPBACK}>

No you can't use the factory tune once the bigger injectors are installed. Well, you could, but it will run extremely rich.

Usually what happens is slot 1 will be a stock calibration reprogrammed to suite the bigger injecters I.e. the car should drive like it did stock.

Slot 2 and 3 will be for your other programs e.g. 8 psi and 10 psi.

Thanks M6XR6T,

That makes sense.

Steve

Its been a while since this topic was covered. I thought that I read a post from Street Tuner stating that the box came with 3 tunes. 1 for the 8 psi tune 2 for the 10 psi tune and 3 could either be a velet tune or a stock 6 psi tune that is modified to run when larger injectors are fitted to you car. When you order your box you can ask them for this option if you have larger injectors.

Steve might pay to ring capa and see if you can send the box back and have this option downloaded into it.

macka

Thanks Macka,

Either that or HPF can probably do it when they retune it.

Cheers

The stock tune is set with pulse width times for the stock injectors usually in milliseconds, and the ecu will compensate for changes within + or - 5 to 10% (don't know the exact figure, it's usually 5%). Putting big injectors in will obviously flow more, but the amount of compensation by the ECU will need to be more in the order of 40 - 50% which it can't do, hence it will run at it's max 5% compensation and still run Uber rich.

Steve,

I think in JB'S car, he had tune # 1 as a stock tune with allowances for the eugene's injectors

Stock tune he Couldn't use.

1. stock with injectors.

2. 98 ron Tune.

3. Race Tune with octane booster.

JB will post up if he sees this or do a search with jb 's Posts.

He had a HPF custom tune.

I rode in his car to Calder the week he had the edit installed............Very Nice.

Steve.

How many ppl here called steve?

Steve.