How much power can you squeeze out of a 986 Boxster S?

[jaykay]

Originally Posted by neil_b

Thanks Jay! Richard is running the 987 airbox but has kept the MAF and housing from the original airbox to try to avoid any ECU problems.

Neil,

Retaining the 987 MAF housing could itself can cause ECU issues as the diameter is larger than the 986 housing iirc. I have heard, stories where the ECU may adapt but I tend to take these with a grain. Unless your friends custom tune is geared for a larger diameter, he will likely get mixture issues.