Today i went to the one of two dynos that we have in Cyprus a " Cartek ", i was lucky to run away with no any engine problems, brfore we run it! Its a German make dyno that is not siutable for the 997 tt.

My other option is a Dyno-jet, i contacted them today and they were working on a GTR which i think has the same AWD system.

Does anybody know if Dyno-jet is suitable for my car

At which gear should we run it

Where should the blowers be placed

Thx

 

My car is tiptronic

 

1. Any AWD Porsche should be run on a dyno where the front and the rear rollers have a mechanical link. This means that they should not spin independently of each other. This is critical. I am unaware of a Dynojet that has mechanically linked rollers. I am also unfamiliar with Cartek dynos.

The concern is not so much about the engine, but the drivetrain. Having the front and rear rollers spinning at different speeds can stress the differential.

2. Fans are critical as they play a major role in keeping intake air temps and coolant temps in check. We use two scroll fans and one large fan pointing towards the nose of the car. The two scroll fans are placed on each side of the car facing the front side grills. Place them as close the body as you can.

We then have two more scroll fans pointing towards the rear vents of the Intercooler ducts behind the car. Again, get them as close to the body as you can since that is where the IC's sit.

We then have a scroll fan pointing towards the engine compartment. ***Do not blow the air directly into the airbox as this can disrupt the signal to the Mass Air Meter and alter your test results.

3. Traction control off, sport mode on, dyno the car in third or forth gear.

Hope this helps.


More dyno data can be found here:
http://awe-tuning.com/pages/faq/awefaq_main.cfm?FAQ=22

 

Check out this thread as well. Read Todd/A.W.E.'s posts regarding dynoing a modern Porsche.

https://www.6speedonline.com/forums/...-day-dyno.html

 

We run a Mustang AWD Dyno and never have had any issues with the Tiptronic or 6speed cars.

 

Due to the front and rear rollers being linked by a giant belt. That is what we use as well, and to date, we have never had an issue.

 

Is it tough on the car to Dyno it?

 

no tougher then when you are on the road raping it

 

Dyno-mite also makes a dyno with linked rollers.

 

Dynojet's are not linked, I had a 424x for 5 years at the last shop I was at, I even installed it... Anyway, I hope the Fabspeed guys chime in here because I believe they are running a AWD Dynojet without issue.... Don't quote me on this, I am in the linked belt camp on AWD 997's. 996's I would just drop the front drive shaft and go..

Brian

 

Thank you all for the info but i still don't know if a dynojet can dynotest a 997 tt

 

i thought tips don't take well to dynoing, but you folks have had success doing so with no issues. is this the case with the 996tt as well?

sorry, i don't know how to quote posts from other threads, but here (cut and paste) sharkster is replying on 6/8/2006 to someone's post about their inability to dyno a tip on EVOMS' awd mustang:

-snip-
Quote:
<table width="100%" border="0" cellpadding="6" cellspacing="0"> <tbody><tr> <td class="alt2" style="border: 1px inset ;"> Originally Posted by Craig
Tips do not dyno. Ask Sharky. Otherwise, Todd could do it on his dyno.

Craig
</td> </tr> </tbody></table>
Dammit you guys keep bringing me up Yeah man it's not a good idea. trust me, I've been down that road before. Tried it multiple times and just gave the hell up. It's not easy for me to give up but some things just aren't meant to be. Tip on a dyno is one of them.

some reasons:
1)I blew my front differential
2)On a RWD mustang dyno my car would go up to 190 or so mph and then the ABS would phreak out and suddenly my rear rotors are on fire (yeah no joke).
3)On Garrett's dyno it would just up shift and you cannot run in my final gear because it's just too fast for that type of dyno. My car was doing 196mph and still had one more gear on the RWD one...

-snip-

has something changed since then, or are mustang dynos unable to accommodate high hp tips? or was alex (sharkster) not dynoing awd on an awd mustang?

enlightenment sought.

 

Milou,
It's best to try to dyno only RWD.
Hub dyno's are best, such as Rototest. The Mustang should be able to do AWD.
Another concern is cooling system for the vehicle.
You need to have fans near the intercoolers and adequate supply in the front.

By the way how did you dyno your turbo 500hp bike?

 

Brian we intalled Dynojet's 424xLC² dynamometer last year and have tested many AWD vehicles including a 2007 Lamborghini Gallardo with E-gear transmission, multiple 997TT's including the TipTronic, 993TT's, Audi S5-S4-S8, Cayenne Twin Turbo S...et al. The difference between the 424 and the 424xLC² is the eddy current load aborption units which provide precise control to eliminate any potential speed bias between the two drums. This system is critical on some of the latest computer controlled AWD systems.

 

That was on a dyno-jet Bikes are easy to dyno test