Dyno'ing S2

The Oily Bits S2 Specific Topics
1

Never did get my S2 on the dyno before my criminal business partner did his flit…

But have the opportunity to do so soon and wondered if the S2 has any idiosyncrasies on a dyno?

For example my CSL ECU used to go nuts on the dyno as the speed sensors on the front wheels played up. There was a key sequence on the TC that stopped it happening.

Does the S2 have any issues? Or just a straight forward machineon the dyno?

2

Mine dyno’d fine at TDi

3

Never had any problems.

4

Thanks both.

Any info on tie-downs guys?

5

Only ever had it tied over the front wheels. Not had a problem with the rear slipping.

6

Damon

I attended a MLOC dyno day last year - all the other cars produced the expected results, mine was down 20hp due to intercooler temp - make sure you have plenty of cool air directed in that direction.

Also when the car came off the rollers, the ABS light stayed on for about an hour!

Have fun

Harvey.

7

Thanks Harvey

Will be with a load of Porsches so if it reads low I’ll be happy to pass them on track with less power :smiley: :wink:

8

Try and use a Dyno Dynamics if possible, they are very good.

The Exixe suffers on a dyno, and you will probably see it drop a couple of bhp each run as the heat soak sets in.

Not sure yours is an S or not? Trouble is, most dyno fans sit in front of the rad. On an Exige S you need that cooling down the roof tract and there is almost none on a dyno, so it’s no where near road conditions. Same goes to an NA Exige to some extent.

For that reason, take the reading with a pinch of salt.

Also you won’t be able to read boost as there is no tapping on the engine / pipework. So if you see the dyno guy looking puzzled, tell him there is none :smiley:

I had my IC pipework drilled and tapped for a fitting. Not really worth it on a S/C car as you get linear boost. Any boost drop will be a leak or belt slip, which is rare. Monitoring boost is more useful on a turbo IMO…

HTH :slight_smile: