did a dyno on my mr2 with my race logic traction control on and got 100bhp less

[gnzyza]

It won't be throttling back back all the time it's on only when it detects slip. So it will give the full amount until one of the wheels loose grip.

[MartinF]

It won't be throttling back back all the time it's on only when it detects slip. So it will give the full amount until one of the wheels loose grip.

Which on a dyno will be 100% of the time. Also RLTC doesn't throttle back it cuts the fuel.

Anyway what the hell kind of outfit dyno's a car with the traction control on? Sounds like a place to avoid IMO and as for the c o c k and bull about them not having time to flick a switch then run it again, I hope the OP used the same excuse when they asked him to pay.

[QUOC2008]

It won't be throttling back back all the time it's on only when it detects slip. So it will give the full amount until one of the wheels loose grip.

Which on a dyno will be 100% of the time. Also RLTC doesn't throttle back it cuts the fuel.

Anyway what the hell kind of outfit dyno's a car with the traction control on? Sounds like a place to avoid IMO and as for the c o c k and bull about them not having time to flick a switch then run it again, I hope the OP used the same excuse when they asked him to pay.

I took the car off the dyno and then realise 10mins after putting my brothers car on.

And its was rs tunning that mapped, wired up, tuned the car wqsnt happy with their work to be honest the car cut out in the morning start from cold 3-5 time when trying to warm up mapp is way to rich

[MartinF]

They should have realised it. Your car won't be the first they've tried to dyno with the traction control on and it's obvious looking at the trace that something's not right.

You're paying for their expertise as much as time on the equipment

[QUOC2008]

They should have realised it. Your car won't be the first they've tried to dyno with the traction control on and it's obvious looking at the trace that something's not right.

You're paying for their expertise as much as time on the equipment

True martinf i was just shocked by the results i wasnt thinking...

[jimGTS]

Sounds like they saw you coming imo.


How you could not PERSONNALY see the dyno numbers to question it means you wasn't paying attention.

If I had of dropped 100hp Id want to know why.

How you could not tell the car wasn't running at its best before you let them run it is anyone's guess.

Seriously.
Ive had a couple of pints but Jeeezzz. If my car now dropped 10hp id want to see evidence, let alone 100. I could feel the differnece in torque alone.

[gnzyza]

It won't be throttling back back all the time it's on only when it detects slip. So it will give the full amount until one of the wheels loose grip.

Which on a dyno will be 100% of the time. Also RLTC doesn't throttle back it cuts the fuel.

I know that, I was replying to the OP when he said "Well at least now i know how much power im running with it on" to ME implied he thought with it on his power is reduced 100% of the time

[QUOC2008]

It won't be throttling back back all the time it's on only when it detects slip. So it will give the full amount until one of the wheels loose grip.

Which on a dyno will be 100% of the time. Also RLTC doesn't throttle back it cuts the fuel.

I know that, I was replying to the OP when he said "Well at least now i know how much power im running with it on" to ME implied he thought with it on his power is reduced 100% of the time

so does this mean with traction control ON mean 25% power cut equal to 470bhp minus 25% -117.5bhp equals 352bhp TC ON? or I AM just hoping... HaHA LOL.

[SonicSW20]

There's too many variables. The only way is another run with TC off.

[2mad]

The hole point of tc is to give you the most amount of grip for the situation .. wouldn't use it on a dyno tbh .. its more about how fast you can pull out a damp corner leaving your foot flat letting the tc do the work .


Like gazza said far to many variables.. a true real world test.. do a damp lap round the block tc off and one tc on .. see what the difference is like .


Must admit its a bit strange to me how intrusive it was on the dyno

[Nic]

so does this mean with traction control ON mean 25% power cut equal to 470bhp minus 25% -117.5bhp equals 352bhp TC ON?

No.

[QUOC2008]

The hole point of tc is to give you the most amount of grip for the situation .. wouldn't use it on a dyno tbh .. its more about how fast you can pull out a damp corner leaving your foot flat letting the tc do the work .


Like gazza said far to many variables.. a true real world test.. do a damp lap round the block tc off and one tc on .. see what the difference is like .


Must admit its a bit strange to me how intrusive it was on the dyno

I know true... thats a real test but just wanted to know a estimate... any thanks everyone for the feedback

[Nic]

Must admit its a bit strange to me how intrusive it was on the dyno

It was intrusive on the dyno because the front wheels are not turning, the RLTC sees the speed difference between the stationary front wheels and spinning rear wheels and thinks the rears have lost traction so cuts the fueling. If it continues to see the rears turning and the front not turning - which it would on a dyno - then it'll continue to cut an injector, so in simple terms only 3 cylinders are firing per cycle ie. you lose 25% of the power. It should have been very obvious to the dyno operator that the TC was on as it'd be misfiring like mad.

I know true... thats a real test but just wanted to know a estimate... any thanks everyone for the feedback

When the RLTC is turned on and all wheels have traction then you will get all the available power to the wheels. It uses the ABS sensors to know how fast each wheel is spinning, so if it senses one wheel is losing grip (spinning faster) only then will it cut an injector until traction is regained.

Have you had the RLTC setup by someone who knows the system? Getting it properly set up is very important to how effective it is.

It explains in more detail how it works here:http://www.racelogic.co.uk/index.php/cn ... w-it-works

[QUOC2008]

I believe they do... i dont know for sure thought how do you check?

[2mad]

Must admit its a bit strange to me how intrusive it was on the dyno

It was intrusive on the dyno because the front wheels are not turning

Ooow yeah .. So obvious .. why didn't that occur to me good call Nick