Quote Originally Posted by EUR003act View Post
majority of those cams tho are made for the K20 tho, to my knowledge they have larger valve reliefs... on the K24 the piston to valve clearance is pretty small, which is were the 50* VTC comes into issues...
Yea that's true, the k20's do have more room to play with.

This is taken from the IPS website (http://www.intrinsicperformance.com/news.html):

IPS-K2 compatibility for use with K24A2 (TSX) confirmed. Piston to valve clearance @ 50 degrees VTC advance = 0.030". We suggest imposing max advance of 45 degrees through software. Clearances were taken using RSX-S VTC sprocket. TSX VTC sprocket has mechanical limitation of 25 degrees max advance.
They still suggest a 45 degree limit through software which will be possible with a good standalone ecu. The majority of cam manufacturers that mention max VTC usually say to limit it via software. Though mechanical limits are always safer...

It'd be good if you could buy an off the shelf 45 degree VTC gear.