82mm throttle body & intake on a standard car, anyone tried it?

[tcreswick]

@Colgy - that's interesting re: the rev limiter change. That would certainly make it more fun on-track where I spend much more time in the top of the rev range. I deliberately went for a non-PASM car and I run with the traction control off on-track.

I presume the rev limiter change would require me to have Porsche add the "official" sport button rather than something that can be dealt with by someone like Zentrum. Any idea what that would cost?

I find the variable electronic throttle pedal ratio mapping to be rather annoying - as many have noted it changes when the top clutch switch is opened but have been repeatedly told that can't be changed other than by disconnecting the clutch switch.

Kevan - does the Zentrum remap replace any hardware? I know on a lot of vehicles they need to be chipped before they can be remapped.

 

[Colgy]

I've got no idea about rev-limit change, other than to say it's pretty violent when you hit it in Sport! Does seem to be only the last couple of hundred rpm though.

 

[Buddy]

I have had the sport chrono on both my gen1 and gen2 S's. and yes the rev limiter is hard when you hit it, it also backs off the PSM to be less intrusive.

The Zentrum remap changes no hardware but may well change the limiter, whether it may change the setting of the PSM you will need to ask Mike at Zentrum, 01159652997

I find that on the gen2 where I have PASM and PSE when I select sport PASM sets to the harder setting but PSE has to be selected which I may ask about at the OPC when it goes for service as I may as well set to bring it on automatically.

On my Gen1, I had sport chrono, no PASM or PSE but it acted as stated above so depending on the spec of your car....

 

[Colgy]

I didn't actually like having the PSE coupled to the sports button so I fitted an extra button in the centre console. Sports cars should sound like sports cars, even when you want the relaxed throttle mapping and fully electronic safety net!

 

[Brian_Innes]

If I may add a comment here please............

If you are intending tracking your car, the most cost-effective way to reduce lap times is to go around the corners faster. Assuming of course you know how to drive the circuit.

A set of Michelin Cup 2's are worth 1 - 2 seconds per lap at most 1.6 to 2.6 mile circuits. The throttle body mod, remap and exhaust will certainly improve the driving enjoyment of your Cayman. It will also make your car faster between the corners, but bear in mind it's the corners where the big gains can be made.

A set of 19" MPS Cup 2's will cost around £900. Not bad value for a 1 - 2 second gain on the track. Tyres are the biggest influence on performance if your intending taking your Cayman on the track, which is the best way to enjoy the extra grip and performance if you decide on the mods as well.

Mr D is offering high quality advice on the engine mods. He knows what he is talking about from personal experience. As described, these modifications will certainly improve the drivability of your Cayman by eradicating the emissions flat spots at 3k - 4k revs.

(I couldn't help smiling at the flat spot complaints on the n/a Cayman, my CR had the same affliction. My 982 CS has no such problem.....)

Brian

 

[tcreswick]

It's sound advice Brian and I'm waiting to wear off the last of the tread on my Pilot Sport 2s before I replace them with some AD08Rs.

I'm hoping to (finally) get some Bilstein B16s on the car this winter and a slightly more aggressive alignment. My main issue at the moment is that I can get the tyres way out of their operating temperature in about 10-15 minutes on a warm day on track which rather spoils the fun.

If all the remap gets me is removal of the flat spot I'll be happy. Most of these other mods seem like quite a lot of work for rather modest PS gains. "Adding lightness" would probably be a cheaper route to go if that's what I really wanted.

 

[Brian_Innes]

The MPS2 tyres are not up to serious track pace, as you have already found out. You will notice a massive gain by switching to MPS Cup 2's......in the dry.

If you want a decent all-purpose tyre, go for Michelin Pilot Sport Super Sports. Excellent in wet and dry, but they don't have the ultimate grip and consistency of the Cup 2's.

Brian

 

[MrDemon]

the new MP4S comes out tomorrow in the right sizes.

where does one stop,? I spent 8K on my Spyder to make it sweet, A remap here or a set of tyres there don't cut it and just opens up the next week spot.

and on a gen one car you need a Motorsport air to oil separator and also a bigger baffled sump if fitting any tyre better than a PS2.

other wise you will starve the engine of oil on the 1st fast bend, it only has 1 oil pick up point where the gen 2 cars have more.