Higher rpm sputter
 

hello again it's me
does anyone know what the deal is

when i get into higher rpms like 5000 plus my car loses power and begins to sputter it does it more when i switch over to high boost and when i try to go aver 100 mph all i get is sputtering and loss of power

i'm thinking that the cam timing is off a tooth or something

How much boost are you running it on?

i have an hks valve timer that acts as a boost controller so i can switch between stock 12 and 15

i get the same feeling. i think its just natural. ill show u a importtuner site were the evo drops boost
http://www.importtuner.com/tech/powe...ontroller.html

look at the note near teh bottom it shows how the psi drop

Fuel cut off? is that 12psi to 15psi? fuel cut offs around there

i'm pretty sure the hks unit gets rid of fuel cut

and it does it at normal boost levels too

thanks for the help