Launch control... good or bad..???
 

Hi..

I have the HKS F-con PRO and i have set the launch control to work, but it is safe for the engine..??

Can the engine get damage by using launch control. I have set it to 5500 rpm and it is banging a lot from the exhaust. I am nervous about if it could break the engine..??

I hope someone can inform me...:)

Thanx

If your Launch Control, controls your launchs by reducing GAS..

THROW THAT POS AWAY/TURN IT OFF. Last thing you want is your F-con to
run your car lean when you are on throtttle and blow your motor.

Modern day.. Traction controls like in my BMW controls traction by
applying Braking. NOT FUEL REDUCTION.

Believe me.. Last thing you want is something to starve your Rotory of FUEL..

looking at your sig. You pretty much got everything done already.
Try some wider good tires.. and practice launching.

fuel reduction on load = BIG NO NO..

Umm, my launch control is ignition-based. I wouldn't want my brakes holding back my car's power.

it can be either fuel or ignition based doesn't matter.

How can you run an engine lean if there isn't any fuel there to burn?
It's fuel cut not reduction!

BTW all the advanced traction control systems from BMW, Ferrari, etc
all reduce engine power NOT apply Brake SORRY try again...

i was wondering this too. my e6k haltech is set to ign cut for the rev limit. I set the 2 stage one to 3800 and when i do it i get lots of large flame backfires. Loud backfires... insanely loud... :)

Being set to ign cut i would figure that it was dumping the unburnt fuel in the exhaust and it was ignighting and backfiring. Well my wideband is reading lean while its doing this.

any one have any input on this?

Ok know it all.
Thanks for being so vague..
"reduce engine power" "how"???

anyways.. I did a little research, and it turns out
"MY" BMW's traction control cuts the throttle (reduce throttle input
because its drive by wire) and applies braking to each individual wheel.

also.. Fuel cut can still blow your motor..

goodday

It is not doing it by making a fuel cut. It sets the ignition back, but like everyone says, it comes with a lot of "bangs" and dos not sound so healthy to the engine... I want to know if the engine can be damaged by using the launch control..??

Has anybody tryed to have launch control on there FD..???

Thanx for your replys...:)

If it's like a 2 step then you shouldn't be using it unless you're seriously into drag racing. It's not healthy.

if it is cutting ignition would the bangs be from un burnt gas being sent out into your exhaust and exploding there?

Jrat destroyed his turbo using a 2 step launch control. i think he blew a vain off his exhaust wheel

I hooked mine up and was calling it the "fun button".... umm yea.. blown turbo is no fun. No thanks.

Yep, thats why I only use my 2-step when I am at the drag strip, and NO where else. That was also a stock turbine that I trashed, so it was a bit weak to begin with.

But I do still use it for launch control on the strip.

I just got my 2 step working yesterday, boosting 18psi on it. It's def going to be only used at the track.

The "bangs" are caused by unburnt fuel being ignited after it exits the engine. Some anti-lag systems work in a similar way, retarding ignition to the point where the explosion occurs after the exhaust valves are open. This sends the powerful flame force directly at the turbo wheel, causing it to create lots of boost with zero engine loading.

It's not damaging to the engine in particular, but the explosions hitting the turbo are most likely going to shorten the turbo's life.

Fuel cut is NOT a safe way to limit rpms.

Fuel cut done the way RaceLogic does seems to be fine: http://www.racelogic.co.uk/?show=Tra...l-How_it_Works

I think the Lotus Elise (and F1 cars) use the same method of over 50% cut on random cylinders/rotors.

18psi? Damn....I'm only building 10 - 12lbs off the line! What are you using for a 2 step? MSD?

I'm using a msd 2 step box with my msd 6al. I also rigged up two relays to completely shut off my trailing coils while the 2 step is engaged.

What type are you using?

I have a 2 step built into the datalogit for the PFC....but it freezes up all the time......So I'm not using a 2 step anymore.....just holding the car at rev limiter (8100K) and dropping the clutch......Not sure how bad this is for the car but I figured it's no different than a 2 step.

I just accept the fact that drag racing is bad for your car, period.

Yea, but it's so much fun!

yeah, I didn't think that the antilag was accesible in the datalogit.........

Just bouncing it off the rev limiter shouldn't give you hardly any boost at all...... Maybe 1-2 lbs if you let off the clutch at the right time. Bouncing it off the rev limiter is completely different than using a actually two step.