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turbo boost....

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newdsmtnr96

15+ Year Contributor
250
1
Apr 16, 2005
Des Moines, Iowa
Ok i have researched everything i can on that worn out search button. I found a forum that is sum what close. there are alot of questions and i am turning to you (Dsm tuners)

Heres my problem. My car will not boost past 7 psi. Now heres the thing. it reachs 5 psi easy and takes a little time to hit 7psi. When hit 7psi it feels like the motor just shut the fuel off and wont go any further. I have a totaly upgraded fmu and welbro fuel pump. I have heard that the 420a engine has a fuel cutt off... this true? Do you think that im hitting that point? I have my mbc set to the fullest. I seen on a video, 3rd gear floored stays at psi. Shouldnt it boost 7psi when i floor it and am at 3500-4500? the car seems pretty quick for 5 but most i want to run is 10-12 daily(on new 330 injectors) and never touch this again cause im sick of all the problems. So im turning to you tuners to try to help me if you can or have an idea on what is going on.

Thank you for any one who puts there 2 cents in.

Lance
New-dsm-tuner
 
have you checked for boost leak? do you have a FCD? 96-99 eclipse will need some sort of FCD to prevent fuel cut.
 
ok the other day i found my hose clamps not tight so i tightend all of them.. Nothing came loose. heres my engine pic its kinda big but maybe you can see what the problem is from here. (fustrated) I have been trying to make more boost sence 1 pm today. I took the atmosphereic pressure off and made 7 psi.only thing stock on this car is cams and springs and currently injectors but there are on the way here fed ex and should be getting them this week. here are three pics.

<a href="http://s223.photobucket.com/albums/dd180/greeneclipsers/?action=view&current=High-Quality-TurboCharger-T3-T4-T04.jpg" target="_blank"><img src="http://i223.photobucket.com/albums/dd180/greeneclipsers/High-Quality-TurboCharger-T3-T4-T04.jpg" border="0" alt="Photobucket"></a>

<a href="http://s223.photobucket.com/albums/dd180/greeneclipsers/?action=view&current=Manual-Boost-Controller-003.jpg" target="_blank"><img src="http://i223.photobucket.com/albums/dd180/greeneclipsers/Manual-Boost-Controller-003.jpg" border="0" alt="Photobucket"></a>

remember the thing between the wastegate and the mbc is off (little blue connection) atmospheric pressure.
 
Resize the pics they are to big...

You get the mbc off ebay it looks like one they are junk. Put it in the trash that is where they belong.
You have stock injectors, you are gonna hit fuel cut... dont your car into boost till you get this fixed and tuned, unless you enjoy picking your motor parts off the side of the road.

What kind of wastegate you got, you may have to adjust it. Do a boost leak test, fix the injectors.
 
Ok thanks ill do that as fast as i can.. What about the boost controler tho. So that explained the fuel cutt thing with my engine. but whats going on with the boost control? I know i have it right. Sorry every one who reads this im not turbo smart. But how do you do a leak check? for boost?
 
Wastegate, China Wastegate products- China Wastegate Manufacturer, supplier

this is ###### crap too. But im starting out .. heres mine. my turbo is a to4E, This kit was bought on ebay and had/has had a tun of crap replaced. I shoulda just saved my money. But im happy with what i got now. Boost makes you smile even at 5 psi. But yeah

Wow you bought a crap kit, you could have built a better one for less that would have been better.

But youll be fine if you watch/check everything over. Looks like everything you got is ebay/china knock off All of it mostly junk. If your bov or wastegate from china fail your motor is toast.

5 psi is nice but you should feel 20-35, makes you evil :D
 
haha the 25 psi, Id like too but yeah.... But yeah i reasearched this t04e turbo.. Good turbo, The blow off valve is an actual hks blow off valve. I was verry much suprised when i took it out of the box. When i took it out i right away went to the hks web site and looked up the part number. Heres a list of #@#$ that i had to replace

:ebay:

All the stupid gaskets!!
The oil line had to be replaced and had to get a new oil line with a oil restrictor
New clamps had to be replaced the other ones wouldnt stay tight
The plate that holds the oil line. JUNK!! Cheap metal (only was 30.00 for a good one but 30.00)
"turbo timer" JUNK never put it on. I have to let my car sit for about 3 min sometimes if i drive over 3000 rpms.
soon to be the supposably "boost control now " think looks like crap and cheap anyways.
the rubber fittings did not work. Cheap and ripped easy.
Hopefully nothing else.

but sence i bolted it on and had all this replaced i havnt had a problem except this boost issue.
 
eh i dont wanna talk about it :crys:

My fustration for this car is high. ABout 800 bucks. i also took my turbo to a motor guy. He has a turbo blue printer and balance check for turbo's. We checked everything we could with out opening the turbo housing. So that cost a little bit. But yeah 800.00
 
forgive me if i'm mistaken but i didn't see an intercooler. are you running a side mount? not sure if going over 7lb of boost is safe without one.
 
yeah but the thing is, Theres no one here where i live that knows about turbo's. All are v8 people, or lets slap a turbo on and call it good. Not tune anything there are no eclipses here that i know of or seen here that are actualy tuned or have put alot of money in there cars like me. I wanna beable to beat some of these pos mustang owners arround here cause all they do is talk crap about imports and how we cant drive and how we have lawn mowers for transportation. I have been beat so bad with my stock eclipse, not stock any more and now no one messes with me. If there are any sioux city iowa tuners here message me cause I can not find you anywhere. do you have alot of tunning shops out west?
 
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current small one

<a href="http://s106.photobucket.com/albums/m264/trancemasterlance/?action=view&current=SSPX0246.jpg" target="_blank"><img src="http://i106.photobucket.com/albums/m264/trancemasterlance/SSPX0246.jpg" border="0" alt="Photobucket"></a>
big one
 
If you don't have one yet, install an FCD or Missing Link.
 
i seen people run with out the missing link. whats that do?

It prevents fuel cut under boost. Basically fools your map sensor.

Couple things here....1) You should tell us what kind of FMU you have, If it's not 12:1 for 8psi you are not usuing the correct FMU ratio for the boost you desire.

2) Thats a manual boost controller. Meaning you won't get a digital readout to tell you exact or closer numbers. Try adjusting it a bit. Though it says 8psi on the controller, your motor may actually only be seeing 7 psi or so because some of the charge pressure is lost in the cycle process.

3) Check your wastegate. If it (or the spring) is set for 7psi, it could be the issue.
 
thanks blitz, Im using a vortec Fmu 12:1, Randy from here told me i should get a 12:1 so i listen to him and got one. on the mbc its all the way up to "max pressure" and only running 7 psi. I think its my thermostat but when im flooring it and that fuel cuts out i noticed a few things. On my a/f it says its verry rich, and then a small odor of coolant is noticed. I wont be doing it any more tell i get that missing link, I also was verry scared i blew a head gasket so i checked everything the oil is still fresh and everything looks good, I also have arp head studds for the head installed. i went from 16 psi wanting that to 10-12 psi daily. All i want now is 10 psi and the motor to run smooth. Any one else has any opinions please leave them im Thankful that there are actualy people willing to help thanks every one
 
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