All Things Mk5 > Performance Modifications
improving aerodynamics with OEM parts
Tfsi_Mike:
I am going to get the bolt hole in my subframe drilled and tapped and order a new blue motion undertray.
Has anyone considered using a spacer(s) on the 3 bolts to ensure the under tray doesn't contact the subframe?
the bruce:
Why this, Mike?
bacillus:
I've got an 06 GTI that unfortunately didn't have the nearside threaded bolt to accommodate the Rear axle cover. Since I had the car in the air, I removed the nut off of the axle cover just used a zip tie to secure that end. It seems very secure so I'm going to leave it that way and not resort to drilling and using a blind rivet stud.
the bruce:
--- Quote from: bacillus on January 16, 2012, 10:36:24 pm ---It seems very secure so I'm going to leave it that way and not resort to drilling and using a blind rivet stud.
--- End quote ---
I hope it's strong enough, but I'd say drilling + blind rivet stud would be the best option. :wink:
the bruce:
--- Quote from: the bruce on January 23, 2012, 12:28:50 pm ---By far most important:
--- Quote from: stealthwolf on January 22, 2012, 11:43:48 pm ---Drive slow and steady. In a GTI, the highest revs before the turbo kicks in, in the highest gear. Equates to around 56-60mph.
--- End quote ---
:happy2: :happy2: :happy2:
From the technical side of view:
- fit OEM aero parts: http://www.mk5golfgti.co.uk/forum/index.php/topic,22986.0.html
- lowering
- narrow wheels (ET50, 7" wide, no spacers)
- Michelin Energy Savers + increase pressure
- low viscosity oil (0W-30)
At higher speeds air drag is most sigificient. So underbody mods and lowering
will reduce drag by a certain amount:
or buy a Mercedes:
--- End quote ---
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