Matt Romanowski

Joe Hullett and Chris Brown did an awesome job with those setups. It will be interesting to see what they implement around the world

ProCoach

Yes, they've taken a little time to get sorted. They had to come up with the protocols themselves and have been continually refining them. Not quite turn-key and it's a shame a majority of the teams aren't using more of the information.

Still think Motec or AiM is preferable because of industry wide knowledge and installed historical databases for many teams/engineers. The move to Cosworth has, for the most part, been disappointing for those working with the 991 Cup, from the folks I've talked to and my experience at the track.

Veloce Raptor

Agreed with regard to Cosworth, Peter...

Matt Romanowski

They have done a ton of work on it and spent lots of time on the CAN sniffer, all without help from Porsche. Those guys are on a whole different level when it comes to CAN profiles and MoTeC. It's a shame people aren't using the data they are getting.

I agree on the switch to Cosworth. The system is very good, but not having archival info for comparison and having to learn a new system is always tough.

TFBoxster

Ideally I'd like it to be Motec and I am aware of the guys in the US working on those systems. I also have a guy in the UK working on a Motec solution depending on what Porsche offer.

I'd be interested to hear what info they're pulling from CAN?

Matt Romanowski

I would say shoot Joe a message. His website is www.digitalcompetitionsystems.com I know he has been working on this setup a lot, so if he doesn't have what you need, he might be able to work on including it.

TFBoxster

Thanks Matt, I will do.

ProCoach

I work with these cars nearly every week. A combination of protocols, both CAN and OBDII fed. They include:

RPM
TPS
MAP
AIT
H2O Temp
Gear
Fuel level
Baro Pressure
Oil Pressure
Ambient air temp
Front brake pressure
Four Wheel Speed
Steering angle
A number of systems status and Comms diagnostics.

Much more is able to be made with these, as well as the logger itself.

James-GMG

PMNA will be making an announcement soon about the upgrade kit but let's just say it will make the car even better as early indications have been very positive.

With these upgrades, they can run in the FIA GT4 Class all over the world, and in the US, in both PWC and IMSA Conti GS Class. The GT4 class is the fastest growing class world wide as the GT3 class is getting too pricey for most. A new 991 GT3R costs over $630K with the spares package!

We have Motec installed on all our 991 Cups and CS's and I wouldn't want anything else.....

kgorman

Yeah, the MoTeC CDL is a perfect fit I would think. At $2400 with dash, loom, and SLM-C its a great price/performance trade off. All is needed is a nice custom loom add on for the CAN connection and a CS specific mount. Hint hint

ProCoach

They selected the C125 so they could lock the CAN assignments on the config in the firmware (among other, bigger benefits over the older CDL3). The C125 for this application was only $2400 plus options. They sold a a loom for the OBDII and CAN connection specific to this car and a nice mount for the dash high on the center console for $40.

Why reinvent the wheel? Let Joe and Chris be in charge of the supply!

tcsracing1

In the trophy East series, everybody appears to be enjoying them (apart from those who are faced with a retub).

Biggest complaint from some owners would be dampers, but that can be address for next season as the cars are doing fine given their lap times.

For me, it is the easiest factory race car to live with. Gas, oil, brakes and tires.
I can also run a D.E weekend without a crew for chits and giggles in the off season.

TFBoxster

Thanks Peter.

I'm glad to this -

Front brake pressure
Four Wheel Speed
Steering angle

tcsracing1

From what i can gather, the 911 powered street Caymans (GT4) come out towards the end of the cayman body production. The GT4CS same thing. Hence only 44 spare tubs were able to be made before the production of 981 caymans ceased.

So for 2017 we have the new street caymans but no sign of a 911 powered cayman (yet). Perhaps at the end of the cycle of the 718 cayman they will offer again a GT4 street car, but will it be a normally aspirated motor or the 991.2 carrera S turbo motor?

The motor is the biggest question. Can porsche allow to have 3.8 X51 motors (for example) remain in production just for the 981 GT4 and maybe a small run of 981 GT4 clubsports? If not, can the 991.2 Carrrera S turbo motor fit in the 718 Cayman tub to make a 911 powered Cayman? and would it even work with a Clubsport build for motorsport given the heat of the turbos in the small compartment?

It will be interest to see what unfolds!

Shivatron

Our own Mr. Ichiban compares the GT4 and GT4 CS for Jalopnik. Kind of short on technicals -- no doubt not a "fault" but rather a nod to the intended audience.


Is it wrong that despite only having DE-level skill that I really want to drive a GT4 CS? Given the 10x cost of my prepped Miata, I think I'm going to have to look harder between the couch cushions (or go all in and sell my GT3, I guess!).