busa4

thats crazy!!! you better wear a diaper.. just in case!!!!!!!

busa4

any updates on this build?

turbosnail

still havin boost controll probs .want it sorted before i get it mapped.think its down to length and diameter of wastegate signal hose.changed to 6mm id,as short as possible.also running a 6 psi spring.i was using a 3 psi and a bleed valve to up the boost to 6 but it wouldnt hold steady boost.hopefully a ride tomoz will show some improvement...
got a camera so i will post a vid when i work out how to use it

turbosnail

result.!!
without the boost controller and with a 6 psi spring it holds steady boost. it seems the boost controller disrupts air flow to the wastegate giving an uneven signal..need to find a good cheap controller now

busa4

where are you getting your boost signal for the wastegate?

turbosnail

the signal is from the compressor housing..the problem is deffo the boost controller cos without it the boost gauge needle is rock solid...

busa4

run the boost signal from the intake plenum. its more accurate and responsive. boost builds up from the plenum and travels to the compressor so there is a slight delay in the opening of the wastegate. this will also cause a sudden boost spike.

turbosnail

cheers for the info mate.... i will try that...could i take a signal from the throttle boddies

busa4

yes but you need to take the signal from all 4 throttle bodies.

turbosnail

do you think there would be any noticeable difference between a signal from the plenum and the tb,s