Thanks lads.

 

From a post Sept 94 WRX RA, runs about 12.7psi IIRC and prety similar to a Z4 from a non-RA WRX

 

Thanks Scott, so they would not suit a version 2 Sti Ra?

 

Not known of anyone trying it, but it shold be OK but will defo run less ignition & less peak boost.

The 7K runs 13.17psi with a short peak upto 13.64psi @ 5,800rpm, then back 12.to peak (a very small peak), then drops to 12.71psi @ 6,600rpm

The Z4 (which I beleive is similar to a Z5, I havn't got a copy of a Z5, sorry.....) runs 12.71psi then drops to 11.78psi @ 6,600rpm


The 7K runs a little leaner and can run on average 3 degree's more advance in the ignition base map hot zones (4,400 - 6,000). but then the Z4 runs higher ignition correction, so it's a bit swings'n'roundabouts.

TBH there isn't alot in it......

 

Thanks Scott for that. My main concern is the fueling, Im not overly concerned if it affects performance slightly but dont want her to go pop.