Cayman S 987.1 3.4 Tuning

[conanius]

Hi folks,

The last thread I can find on this is from 2013, so thought I'd risk a new post.

I'm going to be moving on from my 996.1 C2 3.4 Manual Coupe this weekend, and getting a 987.1 3.4 Cayman (yep, I like my Porsche to have an inherent design flaw with the engine).

I've been reading that it is suprisingly achievable to make good power gains with this engine. The car has a Dansk exhaust fitted, but it sounds like if I do:

Manifold & 200 Cell cats
IPD Plenum & GT3 Throttle Body
Tune

I would be close to ~350 bhp. Not to be sniffed at.

Has anyone done these mods or similar?

[conanius]

I too was dubious, but the internet is littered with pre and post dynos that suggest its possible as the early 987.1 was quite restricted.

https://www.pistonheads.com/gassing/topic.asp?h=0&...
https://www.pistonheads.com/gassing/topic.asp?h=0&...
https://www.pistonheads.com/gassing/topic.asp?h=0&...

[conanius]

LunarOne said:

I don't see why anyone would be dubious about this. The same engine in the 911 already makes 350bhp, so the engine is deliberately detuned for the Boxster/Cayman to ensure that they don't outperform the 911. I believe a smaller intake plenum, smaller throttle body and ECU tune are used to achieve this. All you have to do is restore these to standard 911 spec and you should have Carrera power levels and better is possible.

Sorry, maybe a poor choice of words on my part

Your logic is exactly why I didn't think this was fantasy.

Lets see what happens and I'll report back.

[conanius]

Thanks for all the posts folks.

I swapped the 996.1 for the Cayman S today.

Really incredible how different they are - who knew, etc - and I think I'll start with getting the most out of what is there already. Some sort of suspension work is on the cards for the future, I'll make sure the alignment is spot on first.