bezerk
New member
Re: falling on face
just extend he wastegate rod a few turns, so it opens up earlier and see if it helps
just extend he wastegate rod a few turns, so it opens up earlier and see if it helps
falling on face
- Thread starter BMFB
- Start date
bezerk
New member
Re: falling on face
your wategate actuator (golden colour thingy) bolted onto your turbo is your actuator. there is a rod sticking out going to your wastegate flapper, if you take it off the flapper, and extend the rod about 2 turns, and hook it back up to your flapper, and now your wastegate will open up earlier
your wategate actuator (golden colour thingy) bolted onto your turbo is your actuator. there is a rod sticking out going to your wastegate flapper, if you take it off the flapper, and extend the rod about 2 turns, and hook it back up to your flapper, and now your wastegate will open up earlier
ImperialStormTrooper
New member
Re: falling on face
This should help http://www.sytyarchives.com/howto/viewarticle.php?article_name=3_bar_chip.php&dir=electronics
This should help http://www.sytyarchives.com/howto/viewarticle.php?article_name=3_bar_chip.php&dir=electronics
BMFB
Not to scale
Re: falling on face
well, im gonna take a good look at it tomorrow, i feel like i migh tbe wrong, and it might just be a sticky waste gate, i don't know if its a common thing or not, but it doesn't over boost all the time, as a matter of fact i got on it today a few times while watching closely and it stayed below the threshold, but if it is a problem, i may end up porting the waste gate over the winter, i heard its a pain in the ass, but if i can do that and have the computer keep control of the boost, it would be worth it i think
well, im gonna take a good look at it tomorrow, i feel like i migh tbe wrong, and it might just be a sticky waste gate, i don't know if its a common thing or not, but it doesn't over boost all the time, as a matter of fact i got on it today a few times while watching closely and it stayed below the threshold, but if it is a problem, i may end up porting the waste gate over the winter, i heard its a pain in the ass, but if i can do that and have the computer keep control of the boost, it would be worth it i think
midnightbluS10
Banned
Re: falling on face
You're running a HUGE risk thinking you can watch the stock boost gauge and get out of it during an overboost situation without damage. It's just not possible. By the time you lift off of the gas, the damage may already be done. Hope you've got a few thousand bucks saved for a rebuild. At this rate, you'll need it very soon.
You're running a HUGE risk thinking you can watch the stock boost gauge and get out of it during an overboost situation without damage. It's just not possible. By the time you lift off of the gas, the damage may already be done. Hope you've got a few thousand bucks saved for a rebuild. At this rate, you'll need it very soon.
BMFB
Not to scale
Re: falling on face
yea, i looked at all the vacuum lines, they looked good. But as far as the 'going to ruin my engine' its only happened twice, once while just messing around and the second i did to see what code was popping up so i could figure out what to do. but i'm not planning on running it like that again, until im ready to see if the problem has been fixed, also i don't have just the stock gauge anymore. but your right, that stock gauge is just something fun to look at rather than something to judge anything by, and i am super scared or blowing the crank into the pavement.
it might be something sticking in the 'waste gate actuating assembly' lets call it, hopefully its that simple, ill post tomorrow on what i find.
yea, i looked at all the vacuum lines, they looked good. But as far as the 'going to ruin my engine' its only happened twice, once while just messing around and the second i did to see what code was popping up so i could figure out what to do. but i'm not planning on running it like that again, until im ready to see if the problem has been fixed, also i don't have just the stock gauge anymore. but your right, that stock gauge is just something fun to look at rather than something to judge anything by, and i am super scared or blowing the crank into the pavement.
it might be something sticking in the 'waste gate actuating assembly' lets call it, hopefully its that simple, ill post tomorrow on what i find.
BMFB
Not to scale
Re: falling on face
ok, did some playing around
i had a bad vacuum leak from a broken line coming off my manifold, i fixed that (by the way holy shit on how hard it was to get my hands in there and get the lines off with those little clamps holding them on) and that seemed to help a little bit, actually, it will NOT over boost if i do like a boosted launch up to 100, goes right up to 14.5 psi and sits there, it will however if im going down the freeway and punch it, almost instantly.
i used my air compressor and blew air into my actuator line to make sure the actuator worked and was moving freely, it was. I checked for vacuum at the port coming off my turbo that the boost control solenoid works off of and didnt get any vacuum at all, wasn't sure it that was normal, maybe has a check valve, something, let me know on that.
i ran it with the control solenoid disconnected and it still over boosted, although that was before the vacuum leak was fixed, so that prolly doesn't count anymore.
ok, did some playing around
i had a bad vacuum leak from a broken line coming off my manifold, i fixed that (by the way holy shit on how hard it was to get my hands in there and get the lines off with those little clamps holding them on) and that seemed to help a little bit, actually, it will NOT over boost if i do like a boosted launch up to 100, goes right up to 14.5 psi and sits there, it will however if im going down the freeway and punch it, almost instantly.
i used my air compressor and blew air into my actuator line to make sure the actuator worked and was moving freely, it was. I checked for vacuum at the port coming off my turbo that the boost control solenoid works off of and didnt get any vacuum at all, wasn't sure it that was normal, maybe has a check valve, something, let me know on that.
i ran it with the control solenoid disconnected and it still over boosted, although that was before the vacuum leak was fixed, so that prolly doesn't count anymore.
It's just a six
Super Member
Re: falling on face
Usually overboosting is caused by the wastegate flapper valve being too small.
You can take the turbo off & open the hole up more than the stock size hole there.
Or you can send the turbine housing to a place that will install a larger wastegate valve.
Usually overboosting is caused by the wastegate flapper valve being too small.
You can take the turbo off & open the hole up more than the stock size hole there.
Or you can send the turbine housing to a place that will install a larger wastegate valve.
BoostedSUV
Active member
Re: falling on face
Sounds like you are getting a boost spike from the lack of back pressure in your exhaust system. The stock controls are not fast enough or efficient enough to bleed off boost in that situation. That's why it is not recommended to hollow the CAT on a stock turbo/wastegate/wastegate solenoid. I would suggest putting a cat back on it ASAP. If you keep over boosting it you will be picking rods up off the pavement... These motors are very unforgiving when abused.
Sounds like you are getting a boost spike from the lack of back pressure in your exhaust system. The stock controls are not fast enough or efficient enough to bleed off boost in that situation. That's why it is not recommended to hollow the CAT on a stock turbo/wastegate/wastegate solenoid. I would suggest putting a cat back on it ASAP. If you keep over boosting it you will be picking rods up off the pavement... These motors are very unforgiving when abused.
sy2675
He Saved the Pimp'n Game!
Re: falling on face
disconnected the electrical or the vaccum lines? One (electric)will put the computer into a low boost situation, the other will cost you a motor.
as for the stock system being able to keep you in the safe boost realm, you dont need a CAT to keep things in line, but you will have to tune for the changes. :tup:
disconnected the electrical or the vaccum lines? One (electric)will put the computer into a low boost situation, the other will cost you a motor.
as for the stock system being able to keep you in the safe boost realm, you dont need a CAT to keep things in line, but you will have to tune for the changes. :tup: