LETS TRY THIS AGAIN

94'BooSTED-GT · Jun 11, 2017

I RECENTLY BOUGHT A 94' GT WITH WHAT I LATER FOUND OUT WAS A 'BOOSTBROTHERS" KIT ON IT, EXTERNAL WASTEGATE DID NOT HAVE A VALVE SEAL IN IT I LATER FOUND OUT, BUT NEW ONE IS ON AND HAS THE SEAL, SEEMS TO BE BUILDING PRESSURE, CARS RUNNING ALOT BETTER, JUST TOOK IT DOWN THE BLOCK AND BACK, NOT FAR, GAUGE STILL DIDN'T SEEM TO GO PAST 1-2LBS.... NEEDS BOOST CONTROLLER?BOV ? SEEMS TO BE AROUND 15.3 ON THE AF GAUGE, I ALSO SEEN I HAVE 48LBS INJECTORS AND A WALBRO 255 PUMP, MSD 6AL AND BLASTER 2 COIL, BUT ALL IN ALL IT SEEMS TO BE A LITTLE HAPPIER FOR SURE..... NEXT TAKE IT FOR A TUNE?

97stanger · Jun 11, 2017

OMG! No responses yet!? It takes some balls to make a post like you did than to try posting again for members input. There's probably 4-5 guys on this forum who are pretty knowledgeable with turbo setups, as they aren't all that common on 2v builds, and if you check out my build thread I'm building a pretty balls to the wall setup on mine. People like you aren't worth my time to try to help out. Someone should delete this after that other post this clown made

g36 monkey · Jun 11, 2017

97stanger said:
OMG! No responses yet!? It takes some balls to make a post like you did than to try posting again for members input. There's probably 4-5 guys on this forum who are pretty knowledgeable with turbo setups, as they aren't all that common on 2v builds, and if you check out my build thread I'm building a pretty balls to the wall setup on mine. People like you aren't worth my time to try to help out. Someone should delete this after that other post this clown made

Because I am such a nice fella, I will give him a chance at redemption. We should do some learning regarding not using all-caps all the time though.

To the OP:

Is your wastegate getting stuck open? What about the BOV? Make sure all of your piping is tight. All too often I have seen boots blow off of intercoolers causing a massive boost drain.

Seems to be running lean. Is that at idle or what?

Yes, it needs to be tuned if it is on forced induction of any kind.

Defiant · Jun 11, 2017

The first thing to do would be a boost leak test to make sure there aren't any major leaks on the cold side. A tester is pretty cheap (less than $50) and is pretty much mandatory for any FI application. Everything could look nice and fine but you could be blowing past the injector seals and not even know it..

and a boost controller won't fix it if you're only making a couple PSI as most wastegates have 6-8 PSI springs minimum. I never have seen the kit before so I'm not sure what parts it uses, and if they're genuine or knockoffs. I've had great experiences with TiAL gates and wouldn't use anything else. Most EWGs have a boost port and a separate vent port so make sure not to switch them up when installing it.

Finally, if it's still not boosting I would check the turbo(s) for shaft play and go from there.

ttocs · Jun 11, 2017

TASTE THE RAINBOW...

94'BooSTED-GTtoo · Jun 12, 2017

well im back, and would like to start off by apologizing to 97'stanger....sorry man, came in kinda strong looking for answers, should of been more patient, i get that now.... no caps:thumbsup: and for that i will let you choose my avatar, anything you want.......

now for talk im looking for, i did take the old wg off, and found it was froze up, and also there was no valve seat installed, new (cheapo) wg just for now with seat installed, still same thing... little boost, i also have a new bov on the way also cheapo just for now, until i see if it works and actually worth dumping $ into, if not it'll come off and i'll build a 347 stroker

all piping seems to be tight, turbo spins freely, and for a long time with the spin of a finger, and dont see play in the shaft

15.3 af was at a slow cruise, maybe 25-30ish, but was also bouncing around, thats just the # i seen the most

thinking the bov is my next problem, guess just wait until it gets here and see what it does

and are the springs in the wastegate colored by lbs? from what i understand mines able to handle 30lbs of boost, so 15lbs spring? came with a second spring though

ttocs · Jun 12, 2017

welcome.

Could it be a vac problem bugging the wastegate?

94'BooSTED-GTtoo · Jun 12, 2017

its getting strong vac, i will admit i did have it hooked to the wrong side at first, then noticed it and swapped it and it closed right up, will it open and close like it should just revving the car in my garage, or do i have to take it down the road?

97stanger · Jun 12, 2017

Apology accepted. Now let's figure this out.

What size WG are you running (mm?) Yes, springs are typically color coded for what psi they are. I agree, you have an issue either in the WG or BOV, or both. Could be plumbing, could be functionality. Have you tried to completely bypass the WG spring and run this solely on Boost controller to see if you have the same issue? Do you know how much vacuum your motor is pulling? What cams?

If we can rule out its not a WG issue, I would than start looking at the BOV...again, spring pressure will make or break if it is actually completely closing while the throttle blade is open, and properly opening while the blade is close as it should be

94'BooSTED-GTtoo · Jun 12, 2017

thank you sir!!! wg is brand new, 38mm, it came with two springs, one obviously being strong...so that one went in!! still waiting one the boost controller to come in the mail, and new bov also, im not 100% sure but ive owned 11 mustang 5.0 and it seems to be a bone stock motor. exact vac , no, but its pretty good, sucks against your finger pretty good, it all seems to be working , the bov on it now is opening and the wg is staying closed like it should be, maybe turbo is shot???

Lanter · Jun 12, 2017

Is the BOV open during idle? Also what AFRs do you run when you give the car a little throttle. If it hovers around 15 all the time even with some load be careful on how much boost you try to run, that's on the lean side.

If you have a blow throw MAF setup and the BOV is plumbed before the MAF you may want a slightly stiffer spring if it is open at idle. There is a lot of argument on the topic but the BOV on a turbo car can, and some say should, be closed at idle. Doesn't have to be though as long as it closes with throttle input, so if you free rev the engine the BOV should slam shut.

May sound dumb but are you completely sure all your intercooler pipes are snug? On my dyno day after the first boosted pull we blew off my pipe that goes to the throttle body but didn't notice. My car's IAC hose is an AN line so it held the pipe against the throttle where just glancing at it everything looked fine but when we went into boost the turbo was only building 1-2 psi as all the boost was leaking out the the gap in the charge pipe boot to throttle body. After we fixed that the turbo build boost just fine. Also do you hear the turbo when you try to build boost, does is sound like its spooling up?

Defiant · Jun 12, 2017

It's all guess work until he buys a boost leak tester and pressurizes the system.

Thomas_W · Jun 12, 2017

Im more worried about the "appears stock 5.0" and the earlier "supposed to hold 30psi of boost" comments.

Both of which dont belong in the same thread.

If you truly Think the motor is stock, then you better not even try to put more that 10psi of boost to it if you plan to keep the engine internals... internal...

white95 · Jun 12, 2017

You do realize circumventing a ban is grounds for overban?

ttocs · Jun 12, 2017

I thought the admins were in on it but none the less he came back correctly and I see no need to paint any more rainbows, yet but then the night is young...

94'BooSTED-GTtoo · Jun 12, 2017

yes stock, and no never would ever think about running 30psi , i plan on staying in the 5lb range, but i did notice today that a bolt is missing from the manifold.... pretty good leak, maybe alot of the problem? and as for the ban, not looking for a ban or anymore confrontation, just want to bs with you guess and gain knowledge from you all ....... i also think the bov is opening a little bit at idle, not adjustable, new one is though, do they have a valve seat too or they seat themselves?

Thomas_W · Jun 13, 2017

94'BooSTED-GTtoo said:
yes stock, and no never would ever think about running 30psi , i plan on staying in the 5lb range, but i did notice today that a bolt is missing from the manifold.... pretty good leak, maybe alot of the problem? and as for the ban, not looking for a ban or anymore confrontation, just want to bs with you guess and gain knowledge from you all ....... i also think the bov is opening a little bit at idle, not adjustable, new one is though, do they have a valve seat too or they seat themselves?

then i wouldnt put the stiffest spring you can in the wastegate. The BOV should be seated with the engine at idle or slightly off seat. Once you start driving and putting boost to it it should completely seat as the vacuum reference will turn to a boost reference st some point.

Any exhaust leaks you should fix as they wont help things.

94'BooSTED-GTtoo · Jun 13, 2017

Any exhaust leaks you should fix as they wont help things.[/QUOTE]

working on that today, so take the stiffer spring out? even with a boost controller?

Thomas_W · Jun 13, 2017

94'BooSTED-GTtoo said:
Any exhaust leaks you should fix as they wont help things.

working on that today, so take the stiffer spring out? even with a boost controller?[/QUOTE]

Considering you dont know what pressure that spring is designed for, yes. Without knowing or seeing any photos of what exactly you have for parts/install, its going to be very difficult for anyone to help you. Your going to want to research the wastegate you bought and find out what the psi for the springs you have is, id also suggest not complicating the matters with a boost controller until you get the system to work on its own.