Reynard38

Took the "S" to the Dyno last night. Was hoping for 243RWHP (285-15%) was a little disapointed on the power, but I do like the torque plateau.
I wanted to get a baseline before I make any changes.

Robin 993DX

What gear did you use to run the dyno?

Don't feel so bad of the result, depending on the brand of dyno machine that you used it will not 100% reflect true horse power like an engine dyno, since every dyno machine uses their own calculation methods to calculate "assumed" wheel horse power so there are some variations from machine to machine.

A chassis dyno is good for baseline and after mod comparison, not so much as the actual value of the horse power, those are just a reference point.

Stealth 993

I try to not get hung up on the numbers, but the curves. All Dyno's are different, & a operator can change the numbers to make you feel better.

I did mine on a Mustang a couple of weeks ago & the graph looked kind of like yours, I could see the Vario-ram working on the torque curve.

The important thing is to use that Dyno after you modify the car, that is really the only way to compare, even that will not be 100%.

Don't look at the numbers, they are uncorrected, it did 200 torque & 211hp, but this is all 4 wheels & a Mustang dyno.

Robin 993DX

Here is my run which yielded 239 hp, but that's with 2nd gear (would be higher with 4th gear) on a Dynojet 246C, so it is very interesting that the curves are almost identical.

Stealth 993

Well, that all good, that they are the same! Mine was the same way when you overlapped the 3 runs (4th gear), they are all with in a couple of HP.

Hopefully after I get it chipped from Steve, it will be worth the $1g for the chip!

Reynard38

4th gear.

chris walrod

Wouldnt it be lower in a higher gear? Less leverage against the load.