Urban myths exposed - Your experience?

[GregD2016]

Hi all,

 

After some reading through various posts across the forums online I have stumbled across a couple of "modifications" that intrigue me...

 

1. LH air intake DESNORKEL - You remove the baffle/diverter plate within the LH intake and insert a homemade mesh grille to protect the filter, etc from debris HOWEVER there is proof that no performance is gained, just a different or louder intake noise. Apparently the reason the for the plate is to protect the MAF sensor so I'm a little hesitant on carrying out this modification due to our climate.

 

http://www.planet-9.com/reviews/cayman-performance-modifications/p29-porsche-desnork-part-2-cayman-example.html

 

2. Clutch Delay Valve - In the drivers footwell, at the rear face of the clutch pedal hinge you will find the "clutch delay valve" which isn't really a valve - it's a microswitch... People are taping or ty-wrapping the switch plunger closed to get smoother shifting between gears and eliminating throttle delay. I believe other manufactures employ similar systems to prolong the life of the clutch components and to prevent stalling.

 

http://www.planet-9.com/987-cayman-and-boxster-modifications/105290-clutch-delay-switch-graphed.html

 

 

 

Do you have experience of either?

 

Please share your thoughts and/or any other modifications that may be out there!

 

Greg.

[Luke]

First time I've heard of this clutch switch mod, although after reading Gator Bite's reply here: http://rennlist.com/forums/996-forum/454057-anyone-else-mod-their-clutch-delay-switch.html#post9620709, don't think it seems worth it with the risks he mentions.

[PhilCS]

Wouldn't bother with the de-snork as it doesn't make any difference to performance or the way the car drives.  

 

Clutch switch mod does make a massive difference! I've jumped mine with a switch.  

[GregD2016]

20 minutes ago, PhilCS said:

Wouldn't bother with the de-snork as it doesn't make any difference to performance or the way the car drives.  

 

Clutch switch mod does make a massive difference! I've jumped mine with a switch.  

Interesting, I'm guessing for the better? 

 

When end do you activate/deactivate your switch? 

[Kai]

I would say that if you are looking to upgrade to whole intake system, then the desnork id worthwhile. With everything else standard, not really worth it - apart from noise. 

With a race intake, gt3 throttle and race plenum, the extra air will get in and give gains in power/performance....

just my 2p ?

Kai 

[PorscheGT4]

I did the desnork with mesh and a EVO vflow intake, I like it, one needs more air in, hence why the 981 has 2 air intakes not just the 1, every little helps ;-)

 

while a few mods gets the 987.2 to about 360 bhp the 981 with twin air intakes gets to 385 BHp, it's the same engine  !  more air in wins

[crafty1]

I just did the clutch switch mod, after a quick drive I prefer it but it's already showing this on the dash and the red warning light now stays on, anyway round it ?

[duncan]

Hi,

Can you fully clear the "drive off assistance failure" message and the exclamation mark or do they return each time you fire the engine up?

 

[crafty1]

Yes you can clear it but exclamation mark stays on, and message comes up each time, not a big problem to live it 

[Bushman]

an OBD2 reader will clear all top level faults as well as read them. I am told that unlike BMW or Merc ecus, Porsche don't accumulate faults  then switch to limp home mode when they reach a factory set number. these simple PBD2 readers are on fleabay from £20. hope this helps.

[crafty1]

Thanks Bushman, seems on Gen 2 cars doing this mod also disables the cruise control....