Sunday, January 05, 2014 - 08:24 pm, by: Jack Lloyd(J_lloyd)
Hey all, ive done some research and spoke to Mr Atzmuller about my plans and id like some opinions.
Now, I want to keep the stock ecu for a while and im wondering what would be more beneficial.
Ive got Kurts 4" split dump going on soon and cant decide/ not sure on, weather to put 440cc supra injectors in and boost it to 18psi or build the valvetrain with bc 264s and all the bits and run 12-14psi.
Monday, January 06, 2014 - 03:01 am, by: Blake Gloyn(Blakenz)
Do it without the cams initially, run it on the dyno at 14psi, then 16 , then 18psi, carefully checking air fuel ratios and knock. If you and dyno dude are happy with result, then settle at that. I'm thinking it will do around same power with cams and v/springs at 14psi, with stock ECU, but you will have less ignition advance,relative to boost.(to get from 14 psi to 18psi on stock ECU require a FCD,which stretches the MAP sensor signal-causing you to have a similar ignition advance as say, 13-14 psi on a non FCD equipped ECU)