Re: part throttle boost
 

For real, I only recently put my WG signal line on the charge piping, I had it coming off the IM for months and never had a problem.

Re: part throttle boost
 

personally, i dont give a ---- what everyone does.

http://www.tialmedia.com/documents/w..._wginstall.pdf

i give a ---- about what is correct.

you are increasing back pressure unnecessarily, increasing engine temperature, and putting undue stress on the diaphragm by having it hooked up like that, plus, you will experience part throttle increases like that which makes it VERY difficult to control torque to the wheels! (do any of you ever use part throttle?? :-p)

anyway, yes its wrong, and yes, i did it wrong too, and no its not good for a number of reasons.

as was recently said in another thread "hmt doesnt have to mean niggarigged, just made at home" so why not do it right, its only moving a hose 6" or so anyway.

fred.

Re: part throttle boost
 

YOUR BOOST IS TOO HIGH!

Turbo your boost down to 7psi then take it from there.

if you turning down the boost and it stays the same(does not go down)

then you got a problem. Start doing the check's! check that everything is in its correct place and secured. then check your vacuum lines for any leaks /cracks..

if i pull the Vaccum line off my Actuator i will have the same effect as your are discribing. the car will boost to infinity..

Re: part throttle boost
 

unless i missed something, his boost regulates correctly and nicely under WOT conditions.

also, he shouldnt expect good answers when he asks the question in a random way. dude, note how many of the responses are questions, and how many are suggestions, and how many of those suggestions are relevant...

Re: part throttle boost
 

Okie So under full Boost flat foot acceleration Wide Open Throttle everything is 100%

is he using internal or external wastre gate? cos there is a Cheap ANTILAG System (Vacuum Lines route) that will allow the car to OVERBOOST. and reduce waste gate creep so inconjuctions with this and a small turbo. i could see this happening...

Re: part throttle boost
 

Its perfectly normal, all srt4s have part throttle boost, especially when you add an aftermarket wastgate. You either drive like a grandma and not worry about it, or you drive wot everywhere. I could have the pedal half way down and it will creep up to 10lbs. It does cause a lean condition, but nothing to worry about. search srtforums.com, it will have all your answers. And if you do have an aftermarket wg, never go wot before 3k when cruising or else you get mad compressor surge.

Re: part throttle boost
 

a stupid small turbo would cause that, boost is either controlled by the pcm from a selenoid, or when you put an aftermarket wg on, you can run a line from the turbo directly to the wastegate and control it from a boostcontroller

Re: part throttle boost
 

how can any size turbo cause it?

he lifts to control airlow to the engine, the engine is still flowing a lot of air, just not as much as it was, wastegate hooked to manifold, wastegate sees pressure drop, and closes to correct it, raising boost on the cooler side of the throttle and thus increasing boost in the manifold again to what the wastegate target is.

its just the same as hooking it on one side of the cooler or the other.

if you have a perfectly accurate gate, and reference it from after the cooler, you will get that many psi exactly. if you reference it before the cooler, you will get that many psi THERE and something less (that many psi-cooler loss) on the other side. in the former case, the wastegate is correcting for cooler pressure loss, in our case, if its wired wrongly, its correcting for a partially closed throttle, aka restriction. just like a voltage reg correcting for loss in wires etc...

its not rocket science.

OP, please post and give us a verdict!