Concerns with EVO quick flow add on? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

mike_sd · 02-19-2005, 12:32 PM

I installed my EVO Highflow over two years ago and have had no MAF issues.

Recently checked out the intake side and reinstalled just to ensure there were no leaks and everything looked fine.

Overall in car experience is more flow at higher rpm leading to a 'surge' in acceleration, whereas the stock intake provides smooth acceleration which tapers off at high rpm. So you certainly feel as if there is more 'kick in the pants' than stock. Of course the sound is incredible and every Boxster owner that has ridden in my car wants that sound. Good thing is it is not like an exhaust noise which attracts cops, this is more an in cockpit experience.
Problem is your gas consumption does rise, but my feeling is that is more due to the urge to use more throttle for the noise, hence more gas.

Install is hard work. First removing the 'snorkel' is tough because you have to tug pretty hard on that nice car to get the thing out. Then the airbox, which requires removal of the intake manifold or destroying the air box - your choice.
Not for the timid...

Lux · 02-19-2005, 01:55 PM

Probably the biggest mistake is over-oiling the filter. Even some of the filters that come from the factory are over-oiled. Use oil sparingly!

Clubhead,
The EVO intake comes with a heatshield, correct? You can always insulate the heatshield more, no?

clubhead · 02-19-2005, 09:30 PM

Quote:

Originally Posted by Lux

The EVO intake comes with a heatshield, correct? You can always insulate the heatshield more, no?

That's what I'm looking to do when my workshop removes the air temp probe from the intake AFTER I do my dyno. I wasn't around when they finished the installation so I could not tell whether there were room for improvements for the heat shield...

FUHRIUS · 02-20-2005, 08:56 AM

anyone in the aftermarket selling, for lack of a better term, a 987 style intake setup? I'm assuming that the 'new' intake setup accounts for some of the hp bump on the 987.
or are these systems similar to the new style setup?

Adam · 02-20-2005, 10:05 AM

I don't think you can retrofit a 987 intake to a 986, but I could be wrong. If it is possible somebody will surely do it. A good amount of the hp bump also came from ECU tweeking and equal length headers on the S.

Fletcher · 02-25-2005, 10:03 AM

It seems the evo intake has been redesigned a bit. I don't remember the stock throttle body interface being used before. Also the cnc machined maf housing looks different to me. Anyone else notice this?