One for the guru's!

[the_tonkau]

At idle it was set to 40psi (its a rising rate malpassi, the higher spec model). The injectors where at about 65-70 duty cycle for 211rwkw @12psi. Helpful?

[Sydneykid]

Sorry Stevo, sounds normal.

There are two types of "rising rate" Malpassi's. One maintains the same psi above boost all the time.

40 psi at 0 boost

45 psi at 5 psi boost

52 psi at 12 psi boost

The other increases the psi above boost as the boots increases;

40 psi at 0 boost

47 psi at 5 psi boost

60 psi at 12 psi boost

The later is true "rising rate" and we have found stability problems at fluctuating temperatures. So we mount the reg in the cold air box away from the engine bay heat.

Have the guys checked the rate above boost at various rpms with the bonnet closed? It normally shows up then.

Hope that helps some more

[the_tonkau]

Will get then to try that next dyno session, although.....as this 12psi limit problem was the same when the car was stock as a rock, I kinda think it must be something to do with a module that's always been there but yet to be tested-replaced....injector/igniter/ compression issues.....or maybe that banana up the tailpipe!!

Cheers

[AutoTrust]

I anit' gonna fall for no bannana up the tail pipe!