Hello there........

I have 1987 M5 s38b35 engine, with compression ratio of 1:10.5
Recently, I'v chipped my car and it goes very well,but want more power.
I'v got a clutch activated supercharger (denso-toyota),my question is how much boost can apply on this high CR engine,of course with an intercooler,additional fuel injectors,fuel booster,retarding the ignition if necessary
Do u think that 4-6 psi is acceptable?

if anyone have any idea to answer the questions above please contact me at [email protected]

wish u the best!!