ok really really dumb question and im expecting abuse for this post
but which bloody way should i be turning the actuator bar to lower the boost?

had a quick go on sunday, i thought to lower the boost you should make the bar longer so that the wastegate opens sooner?
surely making it shorter so you have to stretch it over the wastegate arm means its guna hold closed for longer?

but even with it so long that it only just holds the gate closed it was spiking up near 2bar (foot came off throttle very quickly )

boost was fine before but had to take the actuator off to do something

am i just beeing a thick inbread?

any HELP is appreciated

 

Shorter. But only a little at a time.

 

what, shorter will make it boost lower?


am i really being that thick?

 

Shortening the actuator rod will increase boost!

 

thats what i thought but even with the wastegate slightly open at no boost its still hitting 2 bar when it come on

 

well rejet the amal then

 

amal aint connected to the ecu pops, got it on a manual switch for high/low boost and that wasnt turned on

 

anyone else give me a definate answer as the 2 abouve are different

 

Lengthening the rod will lower the boost.
It must not be lengthened to less than 3mm of preload under any circumstances.

 

Can you explain that in more "plain english" please

 

ok thanks stu, just dont get whats going on with the bloody thing boost was fine before, but had to take the actuator off to do another job, didnt have much time but tried it from aprox 4mm preload to 0 and was still getting +1.8 bar of boost, even though at 0 it was taking bloody ages to boost as it was obviosly leaking loads of air

what happens when you go under 3mm then? apart from it not boosting


btw, apart from me not being able to set the boost the rest of the map seems really good (i set the co at 3% just till i can get it double checked on a rr session, this will be ok wont it? )

 

drren if your using the amal valve.. are you sure you havent reconected the pipes the wrong way round and hence creating 'unlimited' boost?

 

hmmm pretty sure anyone want to list the way it should be installed so i can double check it at the weekend

 

3% will be fine if youve sorted your 900Psi fuel pressure out first?

Amal connections:
W = Wastageate actuator
C = Compressor housing
R = Return.

I bet youve put the actuator pipe onto R

As for preload, do a search, theres some pretty large essays around on that subject already

 

 

900psi? dont you mean 50

ok thanks stu, looking at that and from memory i think you guys may be right i think next sunday il just bypass the amal to get the thing set up (will put it back in once sorted )

 

oh and actually i dont know wre ive put c and r but im pretty sure i put w to waste as in waste air not needed so dump out the system

 

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** = More polite to a customer than:

 

FPMSL @ Stu

 

barstard, im making a chalange for jims title didnt you know think im in the lead at the moment

 

The great thing is, if you had switched on your two stage boost, the boost would probably have gone down as you activated the R port your actuator is piped onto

 

i did try that actually and didnt seem to do shit

 

Ahh.. but you say you backed off at 2.0 bar so how do you know you pussy? It may have been 2.9bar off and 2.4bar on

 

sorry i'll go be a man and try it then mate (new engine on order )

 

Thats Better

Did i mention my chips have a 29psi boost limit?

 

no you didnt oh but that reminds me do they have a rev limiter on them? got one set up on the shift light but just curious really