Hi All

I was at a Rolling Road day over the weekend, and was very dissapointed with the results.

The Octy Vrs only managed 150 bhp even on 1.2 bar boost!

Now a few things came to mind here,

1. the inside temperature of the rr venue was 31 degrees

2. it used a very small fan

A couple of questions spring to mind, please excuse my ignorance if these are simple.

1. Should the turbo glow orange on the rr (really glowing not just a bit)

2. why did 2 focus RS's pull 220 bhp + with no problems with boost

3. What is the deffinition of "limp mode" as all my warning lights were on (abs, ecu, )

4. it didnt drive particulary fast/well on the way home but later that night 9ish i took it for a spin and al was back to normal and felt very responsive ???

Does the octy suffer from heat on the intercooler, the foci RS has a HUGE Charge cooler at the front is that the same as the intercooler?? and the air box on the focus was very cold after its run, is this due to the charge cooler??

Is there a way of making/changing the intercooler to a charge cooler? (water cooled i think?)

Would a fmic solve my problem and not look out of place on the car?

OR

would a water misting spray work better or be more effective.

I asume neither will give any gains in power, but would they give more reliable consistant power??

Sorry for the war and peace post, must have had to much sun today.

Mike

Sounds like you car had a problem.

Having said that cooling is very important on a rolling road, even for cars with a charge cooler.

Possibly a MAF sensor going down, did they monitor the emissions whilst doing the test?

No strangely enough they didnt monitor the emmisions on any of the turbo cars, petrol or diesel but did on all the na cars?

Why would this point to a MAF problem ross?

As the car drove welll later and has been fine all today and tonight?

Mike

i actually did 3 runs one at full boost and the other 2 at .7 boost and it didnt make much of a difference apart from the torque figure was higher and the torque/power curve was much smoother on the lower settings?

Now i know this cant be true under normal conditions for the torque as when i run at full boost the car is fantasticaly torquey

err don't think all your warning lights should be on either. Do you actually mean while the car was running you had all these lights on?

err don't think all your warning lights should be on either. Do you actually mean while the car was running you had all these lights on?

Yeah dave, well the traction light was on anyway as it has to be turned off for the rollers which annoyingly doubles up as the engine warning light!!

Also the abs light was on after i reversed it off the rollers?

Turned off then back on and all was fine.

BUT two seat's had the same lights on and gave credible performance figures and also cleared after a turn off?

Maybe it was just one of them days, the car had sat in the sun all day and then went into a very static and warm area to run on the rollers.

The only other thing different was that they had to attach it to the rollers from the front hence clamping it down right ontop of the rollers! maybe that was it??

Mike

The reason we test all cars where possible with the CO meter is simply because if you have a faulty MAF unit and its causing a lean mixture it can cause serious damage to the engine. If we run a car that the mixture is lean the run is aborted until the fault is sorted out. usually a car with a lean mixture will stink on the rolling road...nasty.

And the ABS light will come on when run on the rolling road as the front wheels arre turning but the rears are not (unless your 4 x 4). The light will self cancel one the car is driven over 15-20 mph.

Thanks for that Ross. it clears a few things up.

Is there a way of seeing if it is running lean without running it on the rollers?

i might try and get it checked out if possible.

Mike

You could get a CAT test done at an MOT test station,failing that you need to get the MAF readings check, either at the dealer or someone with VAG COM.

Look up either MAF voltages or readings from the lambda sensor (probe 1).