Upgrade their engine with the 993 varioram intake and to change the engine and tip chip to the 993 OEM version.

Best I know, there are no fundamental differences between the engines of the 964 and 993, and this would be a good way to enhance perf while staying OEM.

 

If I recall correctly, Andy/Flat Six has done the Varioram fitment previously to a 964, but you'll have to confirm with him. I think this would entail successfully fitting a 993 ECU, and the ancillary components needed to actuate the valve (i.e., $$$). Unless you can get your hands on a Varioram set up for free, I don't see much to be gained.

Here is an interesting article on this: http://www.autozine.org/technical_sc...h_engine_2.htm

What I do know does improve power on the 964s is a high flow intake, chip and exhaust. Changing the TCU is not going to do much.

 

You don't have to change over to a 993 ECU - you only need to add a RPM sensor/switch to control the solenoids for the Varioram - need two - one for around 5000 RPM and another for Around 5800 RPM -
Minor chip modification will work - Believe S Wong has made a chip for this conversion before. There is a lot more to it than just bolting the Varioram manifold on though - Think someone in the 993 side did a conversion and a nice article - should be able to find with a little searching

 

Thx for the feedback.

Couple of things: I had a long discussion with Robert Linton, and he said that the Tip ECU communicates with the engine's ECU. If I had a manual, I would seriously consider a 3rd Party upgrade like Motec as it's far less complicated.

I'm concerned about long term usage, and how the Tip chip may be affected, so with the 993 Tip rated at 285 bhp with more torque, it sounds like a good OEM upgrade.

Will look for a refurbished Varioram, and this is part of the discussion with Andy.

 

Ah, I see. I'm sure Andy will take care of you in terms of modification options.

 

The problems are with the Tip and its ECU. No one seems too familiar with modding it. That's why I'm exploring the OEM route, and would like to know if anyone's done this before.