Mythbuster: continuing project thread of my 1303 '75

[Wally]

Originally Posted by Sandeep

Question for you ... can you switch between boost setting maps with the DTA, while you are driving ? Perhaps by a switch or button ? One setting for , say 10 psi (stun) and one setting for 20 psi (kill) ?

Thanks

Sandeep

Hi,
Yes, with the S60 model it works like you described.
I haven't gotton to that myself though.
The boost control map can almost do the same, but then rpm and trottle position dependent. So, half throttle you develop 10 psi and full throttle can gradually 'drive' through the map towards your setting of 20 psi or whatever. This is basically what a electronic boost control does is my understanding.
Again, an however...: the idea of the PWM boost % map is brilliant, but to get the right psi at a certain % is a lot of tuning. Without a dyno this is a PITA and bringing in different temperatures/tunes into the game, it becomes even more difficult to get a steady boost pressure.

There is a very tricked out PID control boost regulation in the ecu as an alternative to the PWM map method though, but no-one a spoke to seems to have it working...

Sooo, I probably still 'have' to invest in an aftermarket ebc...when does it ever stop...?