Originally Posted by
Karlos G
Yeah i will update as soon as sort it! Got no time today but hopefull will have the cam out tomorrow and have a look.
The boost drops to 10psi because i'm running a stock T3 and it cant flow enough to maintain 17psi beyond about 4000rpm, it just gradually drops down as the revs increase and the engine demands more air flow.
My head is heavily ported and flowed with stainless valves etc.. so the VE of the engine is really good! Next upgrade is a better turbo
mark2 yeah its at 0 mate, i had a conversation about it with Chris while he was setting it up and like i said above he thinks they are pointless on a single cam engine! But like you say yours made a big difference, so maybe i will take it somehwere else next time...... then again it did make 183bhp at 10psi which is pretty good, so fuck knows LOL!!
fair enough
is the 183 bhp from the 17 psi spike or the costant 10 psi just out of curiosity as when mine was spiking hitting 14 then dropping to 9 and holding i was hitting big bhp on the spike but only 140s holding boost i also got a burble for a split second at 4k revs then cleared and went up the rev range fine but before it was set up again i could only get to about 4k revs and this was about the same time you went to the rollers i was having a similar boost spike which was found on the rollers but the tuner said no problem with the turbo or actuator just said amal valve or tired ecu
so the easy won first removed amal and plumbed in a adjustable bleed valve and adjusted the actuator most of the psi then just fine tuned it to the setting i was wanting with the bleed valve and then had it back on the rollers so if you have an amal valve why not give it ago to see if you can get the boost steady my amal still clicked and done the same sort of thing on my mates engine having trouble holding boost when we was bored one sunday so you never know and i hope you sort it soon as sounds like you have spent a few bob but aint getting the full benefit yet
mark