Hondata

Hi,

I'm new to Hondata S300j.

Fitted it on DC2 and plan to test and run them in track races..

I want to use the launch control as a pit lane speed limiter of 60km/h. I figured out on my current gear ratio, my 2nd gear at 4800rpm should just get me below 60km/h.

So i plan to wire the air-cond switch to trigger launch control, so every time i get into the pit entry, i can down shift to 2nd gear, switch on the launch control and then just flat out on my throttle and it should rev limit my car at 4800rpm to keep within pit lane speed limit.

Will this work or is there other ways i can use S300j for pit lane speed limiter? cause when i use it as speed limiter, i won't have launch control at the start of the race?

The other thing is, from pit entry to the pit for re-fuelling, i got to drive and hit rev-limiter the car for about 10sec to 15sec to reach my pit. Will holding the rev-limiter cut for 15 secs cause any many dammage to my race engines like severe engine bore wear or extreme high water temp rise or cylinder temp high??

Thanks.

Chris

You will be much better off trying to use the Nitrous/Aux controls to do this.

You could use full throttle shift or launch control, activated from a switch wired to the ACS.

It might be possible to use a nitrous output configured so that it activates on the ACS at a certain speed, and takes out enough fuel to close the injectors. You'd need to test this yourself.

Sitting on the rev limit is not normally a problem as long as the rpm is not too high. Anything under about 5000 rpm should be fine for 10-15 seconds.

I do intend to use a switch wired to ACS on the ECU side.

The only thing is which option to use.

I did initially look a using Nitrous/aux output but don't know how to set it to rev cut/limt like launch.

Then i did look at Full throttle shift, but if i use FTS then i will need to install a clutch switch and i need to clutch in to activate the rev cut/limit which defeates the puprpose as my car won't be moving then cause its been clutch in.

So is the launch control the only option to use for my pit lane speed limiter??

I really need to use the pit lane speed limiter so that we can maximise pit lane speed to reduce pit refuelling time and reduce chance of getting pit lane speed penalty.

But i would also like to use the launch control for the grid start which i think is useful to get a good and consistent launch.

Any other way to get the speed limiter working with launch control as well??

It might be possible to use a nitrous output configured so that it activates on the ACS at a certain speed, and takes out enough fuel to close the injectors

Set nitrous up so that it is armed by an external switch. Don't make it the same input as the clutch switch. Set the nitrous parameters to any engine speed, any engine load, any temperature, any throttle angle, and 60 kph. Set the nitrous fuel change to -10000 for all rpm points. Test.

Thanks Hondata..

I will try it over the weekend..

Hope it works but worry car engine may die off due to no fuel at all but will give it a shot..

Thanks again.