M5 Expert (>4000)
Join Date: Aug 2002
Location: Raleigh, NC
Thanked 1,507 Times in 1,031 Posts
It's a con isn't it?
It's like covering your eyes and believing what's in front of you doesn't exist..
The point of the Powerchip "fix" is that the secondary air system is only active during a cold start to reduce cold start emissions. This is something that typically lasts 20 seconds to maybe 60 seconds depending on how cold the start is. If the secondary air passages are blocked, you get a code thrown that triggers the SES light. This prevents one from getting an inspection.
Hence it is up to you. You can spend $8000 and have the heads removed and the secondary air passages cleaned out, OR you can pay Powerchip for a programmed chip that ignores the secondary air issue (oh, and you might have slightly higher emissions for 20-30 seconds on a cold start). There is NO performance issue tied to this problem.
The only con here is the design by BMW in the first place.
2019 M2 Competition 6MT LBB, slicktop
2011.5 M3 sedan 6MT Silverstone, slicktop: Dinan front swaybar, Eibach rear swaybar, pins-out-max-camber-up-front, Dinan exhaust, Michelin PS4S, Apex EC-7 9.5/10.5x19
2007 328i wagon Silver/gray: Eibach 28mm front swaybar, E93 M3 rear swaybar, 219M M3 wheels, Michelin PSAS3+
1975 CanAm 125MX2: Stock, original owner
Last edited by CSBM5; 11th November 2008 at 06:14 PM.