Turbo Problem

**Johnathansgalant** · 10-29-2008, 04:01 PM

yes i can vouch on 100% throttle and in drive the car accelerates and boost reaches 9 or so and with wastegate line attached it only reaches 5 on wot... -- paul its possible if u have no downpipe u will have very slow spool due to no backpressure but i dont think thats the case because there is a connection === first i think u should remove the turbo and inspect the wastegate before you do ne thing --- hook the actuator up to a hand pump with a gauge and visually watch the gate open around 10 or so pounds. you need to do it with a hand pump so u can see it open and close as u pump. Once u establish that then move to leaks --- if u need a pump i can find one for u

**laxinwarrior** · 10-29-2008, 05:11 PM

I can almost guarantee you it's the flapper not being seated correctly. Try driving it around with the actuator arm disconnected not the vacuum source and see if you notice any difference. You say that it only hits 5 lbs with the vacuum line connected but 10 with it off, to me that sounds like the flapper is only half seated (actually pretty common on mitsu turbos). What actuator are you currently using?

**whokilledhoughes** · 10-29-2008, 06:36 PM

problem solved....somehow the BOV vacuum line was not working properly...re-did the line and im watching 10psi straight with the actuator connected...its pulling harder than ever...so i know its working...im hitting 10psi at 3000 rpms...its all pull after that.....and 10psi is all i should see since the actuator comes with i belive a ~12psi spring. 2psi loss in the intercooler is not much...so im happy for now...it finally feels like a turbo car...i can actually hear the turbo whoosh really strong...sounds like a mini diesel truck...

**whokilledhoughes** · 10-29-2008, 06:42 PM

i switched vacuum lines between the boost and the BOV and i noticed that when i connected the boost line i was getting only 20 vacuum at all times while i took out the car on WOT runs...connected the boost gauge and the BOV line together...and bingo...car feels great and everything seems to run right...like i said 10psi at ~3K RPMs and all pull after that...feels alot stronger than any other run ive done.... before i used to build ~2-3 psi at 4K RPMs and 5psi at the end...

**bmaddock** · 10-29-2008, 07:13 PM

I want a boosted car! hahah thats sweet you got it working, have fun. :)

**Galante** · 10-29-2008, 07:25 PM

I envy your turbo setup dude! Good you've figured the problem now! I'm still learning about turbo's.

**greddy** · 10-29-2008, 07:27 PM

Originally Posted by whokilledhoughes

i switched vacuum lines between the boost and the BOV and i noticed that when i connected the boost line i was getting only 20 vacuum at all times while i took out the car on WOT runs...connected the boost gauge and the BOV line together...and bingo...car feels great and everything seems to run right...like i said 10psi at ~3K RPMs and all pull after that...feels alot stronger than any other run ive done.... before i used to build ~2-3 psi at 4K RPMs and 5psi at the end...

any dyno pulls or 1/4 mile times?

**qnz** · 10-29-2008, 07:43 PM

glad you figured it out! haha. no one said vac line

**Stewi** · 10-29-2008, 09:07 PM

LOL

Its amazing how the smallest things elude people. I drove around for about an hour and couldnt figure out WTF was wrong with my car and then I realized I never hooked the vac line back up to the BOV.

**Johnathansgalant** · 10-29-2008, 10:22 PM

laxin im a little tired but if disconnect the actuator arm how r u gonna build boost??? the flapper is going to swing open and hardly ne boost will build... Am i missing something??

**whokilledhoughes** · 10-29-2008, 11:17 PM

Originally Posted by greddy

any dyno pulls or 1/4 mile times?

not yet...soon tho...wanna get a proper DP first

**whokilledhoughes** · 10-29-2008, 11:18 PM

Originally Posted by qnz

glad you figured it out! haha. no one said vac line

i know...i always knew the problem was laying on the BOV...but i never thought of looking at the vacuum line..

**GOOSEY2099** · 10-29-2008, 11:41 PM

good to hear that man, to tell you the truth i don't think you should be loosing those 2lb. Something is still not right.... where do you have the boost guage hooked up? also did you just the J pipe to the vac? what kind of bov do you have?

**whokilledhoughes** · 10-30-2008, 12:04 AM

Originally Posted by GOOSEY2099

good to hear that man, to tell you the truth i don't think you should be loosing those 2lb. Something is still not right.... where do you have the boost guage hooked up? also did you just the J pipe to the vac? what kind of bov do you have?

i have the boost gauge hooked up where the stock regulator was getting its vacuum source....i dont understand what your trying to ask about the J-pipe your missing something and im using a Turbonetics Raptor BOV.

**GOOSEY2099** · 10-30-2008, 08:34 AM

Sorry I was drunk when i wrote that lol. I'm asking if you just jumped the WG to the J pipe or did you tee it of the BOV?

**whokilledhoughes** · 10-30-2008, 10:15 AM

Originally Posted by GOOSEY2099

Sorry I was drunk when i wrote that lol. I'm asking if you just jumped the WG to the J pipe or did you tee it of the BOV?

no the WG is connected with the J-pipe by a vac hose...i made a T for the boost gauge and BOV.

**laxinwarrior** · 10-30-2008, 11:16 AM

Originally Posted by Johnathansgalant

laxin im a little tired but if disconnect the actuator arm how r u gonna build boost??? the flapper is going to swing open and hardly ne boost will build... Am i missing something??

No you're correct, i misunderstood what he was saying in his earlier posts.