6-8 psi on a high CR mmmmm, take care of pinking. yep http://20v.org/s2/home.html it s agood one. You can also put the 20V head on a 2.3 block, you ll get 8.5 CR good for turbo. k24 S4 turbo, bigger intercooler, and another efi + spark system and ready for 400hp. Megasquirt and spark does it for cheap(it s a do it yourself computer) or Javad unit at 80tq.com for much more $, but it s a plug and play, almost. Or wait the new generation of Megasquirt ... the Ultra Megasquirt sequential inj and spark...  |