so okay, i got tuned a few days ago and the wastegate was holding the 7psi spring fine. no problems on the dyno or on the street. about 2days ago, i keep spiking. liek it just goes up alot higher then its supposed to. liek a few ,minutes ago, i gave my friend a little ride. and my zeitronix boost display read 11.9. thats ALOT higher then the 7 its supposed to be. help me out. what could be the cause? how would the wastegate be FINE then all of a sudden take a crap?? even if thats the casue. i have a mbc inline with the vacuum line to the wastegate and it doesent have hoseclamps on it or anything, but it didnt when it was working fine at 7 either. give me some help, i really need it. i really dont wanna mess omething up and the 11.9 really scared me. reply asap please

 

take off the p.o.s. boost controller

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18ccivics &raquo;</TD></TR><TR><TD CLASS="quote">take off the p.o.s. boost controller</TD></TR></TABLE>

 

i could do that no problem. for the record its a turbosmart dual stage. so not a pos lol. but why would it be fine and then all of a sudden mess up. nothing in my setup has changed what so ever

 

im going to put another vacuum line in tomorrow, but just why would it be any different from before. let me know what the deal with that is. thanks guys

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by playahwitgame &raquo;</TD></TR><TR><TD CLASS="quote">i could do that no problem. for the record its a turbosmart dual stage. so not a pos lol. but why would it be fine and then all of a sudden mess up. nothing in my setup has changed what so ever</TD></TR></TABLE>

hmmm

weird... maybe its not the MBC, but that would be my first guess

 

i eman i can definately try it out as im not even using the boost controller/. but other then that, what else could be my problem?

 

well, first put one solid vacuum line to the wastegate instead of the MBC and 2 smaller lines.... check those... IF it still does it.. then you have alot more that it could be...

if it is one of the lines around the MBC, clamp it down

my guess is that either a vaccuum line pulled off, or your MBC could be leaking...

Ive also had a problem with my wastegate goin to 10-11 psi... it was a problem with my boot inside the wastegate itself... i took it off and took it apart.... fixed it no problem

it was a cheap SSAC wastegate...once i fixed it, i never had any more problems with it....
i now have a 38mm TIAL just for that bigger sence of security......

 

that coul be, but these allen screws were in there so tight, i was going to strip them if i turned harder. so i didnt. but hy would the boot rip in a matter of a few days for no reason. espeically 7 psi
and where did oyu get the replacement boot?

 

my boot didnt rip, it just came off and wouldnt hold boost....

do you have the cheap SSAC wastegate?

 

turn the controller all the way off. then slowly open the low side to the desired boost is acheived.
if your only goingot be boosting low boost that dual stage was a complete and utter WASTE of $ and of a nice controller. peopel use the dual stage to run liek 9-12 or more for low street boost and then high teens+ for race.

if your doing 7 psi then it sounds leik your jsut way to low for that controller.

 

well the point of the controller was so i can do 7 psi and then 10 psi at the flip of the switch. im going to go get a vacuum line now

 

well i got a new vacuum hose and it works fine. it hits 6.7 lbs. i guess it was because it wasnt clamped to the boost controller