still having issues with tial wg..
#1
still having issues with tial wg..
So the new turbo has been installed and i'm still having the same problem.
The car pulls hard under boost until the wg acts up.It happens shortly after the wg opens.boost goes up to 7psi and holds steady, the wg opens and everything is still fine, then the wg changes tone (from a steady sound to a cavitating sound) and the car starts surging...feels like it's bouncing off the rev limiter but it's not.It happens about 6k rpm.The air/fuel ratio gauge is in the rich, fuel pressure is holding steady,and boost is constant.I have no clue where to start.The car pulls hard up until this pointand then it feels like it hits a wall....any sugestions...thanks..
btw it's a b16a,garrett t3t4 .57/.63 drag manifold and tial 35mm.
8:1 fmu,255lph fuel pump h/p,310cc injectors,msd 6al,ngk plugs.It never did this with the old turbo and internal wg...but it did do this with the old turbo and tial wg....i'e changed vacuum sources (before and after t/b) and still happens..
The car pulls hard under boost until the wg acts up.It happens shortly after the wg opens.boost goes up to 7psi and holds steady, the wg opens and everything is still fine, then the wg changes tone (from a steady sound to a cavitating sound) and the car starts surging...feels like it's bouncing off the rev limiter but it's not.It happens about 6k rpm.The air/fuel ratio gauge is in the rich, fuel pressure is holding steady,and boost is constant.I have no clue where to start.The car pulls hard up until this pointand then it feels like it hits a wall....any sugestions...thanks..
btw it's a b16a,garrett t3t4 .57/.63 drag manifold and tial 35mm.
8:1 fmu,255lph fuel pump h/p,310cc injectors,msd 6al,ngk plugs.It never did this with the old turbo and internal wg...but it did do this with the old turbo and tial wg....i'e changed vacuum sources (before and after t/b) and still happens..
#4
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Re: still having issues with tial wg.. (b16ahybrid)
try setting it lower if see if it helps, if not I'd get that thing hooked up to a wideband. You might be extremely rich.
#5
Re: still having issues with tial wg.. (LsTurbo91)
try setting it lower if see if it helps, if not I'd get that thing hooked up to a wideband. You might be extremely rich.
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Re: still having issues with tial wg.. (b16ahybrid)
so you mean, everything stayed the same from the settings like fuel from before? Is the turbo bigger now than before?
#7
Re: still having issues with tial wg.. (LsTurbo91)
yeah everything is the same...only change is the turbo and wg...
the old turbo was a small t3 (.42/ .48) and the new one is a t3t4 (.57/ .63)..but this happend with the old turbo so it's not the turbo......
the old turbo was a small t3 (.42/ .48) and the new one is a t3t4 (.57/ .63)..but this happend with the old turbo so it's not the turbo......
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#8
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Re: still having issues with tial wg.. (b16ahybrid)
what are you using for your fuel management? get that thing hooked up on the dyno asap. I'm sure your making way more power than the old setup. I thought you said it didn't do this with the "internal one"?
#9
Re: still having issues with tial wg.. (LsTurbo91)
what are you using for your fuel management? get that thing hooked up on the dyno asap. I'm sure your making way more power than the old setup. I thought you said it didn't do this with the "internal one"?
It didn't do this with the internal wg..it did do this once i installed the tial....
old turbo unhooked internal wg runing tial = problem
old turbo internal wg no tial = fine
new turbo tial = problem
#10
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Re: still having issues with tial wg.. (b16ahybrid)
310cc injectors,8:1 fmu, high pressure fuel pump,aem 1:1 fpr.
It didn't do this with the internal wg..it did do this once i installed the tial....
old turbo unhooked internal wg runing tial = problem
old turbo internal wg no tial = fine
new turbo tial = problem
It didn't do this with the internal wg..it did do this once i installed the tial....
old turbo unhooked internal wg runing tial = problem
old turbo internal wg no tial = fine
new turbo tial = problem
#11
Re: still having issues with tial wg.. (LsTurbo91)
none.
I'm runing a .45 bar spring (about 7psi)
before that i was runing 7psi but it would drop off to 4.5psi or so....
I'm runing a .45 bar spring (about 7psi)
before that i was runing 7psi but it would drop off to 4.5psi or so....
#12
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Re: still having issues with tial wg.. (b16ahybrid)
I'm having the same problem with the same wastegate! I have a .65 spring and it climbs to .73 and then violently dumps pressure. This is completely unconnected. When vacuum line is connected it climbs to .38 and then releases normal. My boost controller allows me to tune to .71 where it stays smooth. I'm thinking a bigger spring. Are you using a boost controller?
#13
Re: still having issues with tial wg.. (nolimits)
your symptons sound like you're running extremely rich on the top end. thus having that violent surge.
the wastegate really has nothing to do with the car feeling like it hits a wall. unless the boost guage is reading 0 at that point.
the only portion the wastegate controls is to regulate boost.
if you have something to tune with tune down the fuel.
my car is doing this right now also but that's because it's running extremely rich from the cold temperature.
the wastegate really has nothing to do with the car feeling like it hits a wall. unless the boost guage is reading 0 at that point.
the only portion the wastegate controls is to regulate boost.
if you have something to tune with tune down the fuel.
my car is doing this right now also but that's because it's running extremely rich from the cold temperature.
#14
Re: still having issues with tial wg.. (nolimits)
I'm having the same problem with the same wastegate! I have a .65 spring and it climbs to .73 and then violently dumps pressure. This is completely unconnected. When vacuum line is connected it climbs to .38 and then releases normal. My boost controller allows me to tune to .71 where it stays smooth. I'm thinking a bigger spring. Are you using a boost controller?
#15
Re: still having issues with tial wg.. (bgod)
your symptons sound like you're running extremely rich on the top end. thus having that violent surge.
the wastegate really has nothing to do with the car feeling like it hits a wall. unless the boost guage is reading 0 at that point.
the only portion the wastegate controls is to regulate boost.
if you have something to tune with tune down the fuel.
my car is doing this right now also but that's because it's running extremely rich from the cold temperature.
the wastegate really has nothing to do with the car feeling like it hits a wall. unless the boost guage is reading 0 at that point.
the only portion the wastegate controls is to regulate boost.
if you have something to tune with tune down the fuel.
my car is doing this right now also but that's because it's running extremely rich from the cold temperature.
Do you think that i would be runing that rich with my set-up?
310cc rc's, 8:1 fmu, holley 255lph h/p fuel pump, aem 1:1 adjustable fpr, idle fuel pressure of 38psi.
so a total of 9:1 rising rate.
I just recently switched from my 6:1 fmu to the 8:1 because i was runing lean and had a slight detonation at about 5psi of boost.I'm just affraid to switch back to the 6:1 because i won't be able to hear if it's detonating or not.....
I changed from zex plugs that were new (1000 miles) but all black to a set of my ngk's that i took out when i put the zex in.It helped the problem a little, it's able to rev further before the problem happens.I think that i may replace my cap and rotor tonight to see if it helps...it's either to much fuel like you said or poor spark and it's not able to ignite the mixture well enough so it misses....thanks for everybodys help I appreciate it, keep it coming...thanks
#16
Re: still having issues with tial wg.. (b16ahybrid)
Another thing is my bov....it used to make the usual sound now it chatters when it releases.Low boost it still sounds the same but 3+psi it makes chattering sound when it releases, any idea's? it's just a bosch saab bov...(over pressure valve)
#18
Re: still having issues with tial wg.. (rpm9100)
did you reset the ecu?
just a thought
just a thought
#19
Re: still having issues with tial wg.. (b16ahybrid)
definitely a problem with spark or fuel i believe.
since you say using the ngk's allowed the car to rev higher before hitting the wall.
you may need some new wires, cap, rotor, etc.
try to get the car diagnosed by a pro. near your area. that's your best bet.
since you say using the ngk's allowed the car to rev higher before hitting the wall.
you may need some new wires, cap, rotor, etc.
try to get the car diagnosed by a pro. near your area. that's your best bet.
#20
Re: still having issues with tial wg.. (bgod)
I swapped the 8:1 fmu for a 6:1 fmu and the car pulls hard all the way to redline.So it was not buring all the fuel.Thanks for the help guys ....
I'm still skeptical about using the 6:1 because i was runing lean before, thats why i switched to the 8:1...
I'm going to replace the cap, rotor, and plug wires then try the 8:1 if it boggs again then i will just run the 6:1...thanks again...
I'm still skeptical about using the 6:1 because i was runing lean before, thats why i switched to the 8:1...
I'm going to replace the cap, rotor, and plug wires then try the 8:1 if it boggs again then i will just run the 6:1...thanks again...
#21
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Re: still having issues with tial wg.. (bgod)
I'm using 450cc inj with vafc hack and I do run pretty rich because I don't really trust my A/F gauge and don't have access right now to a wideband. I never thought it would be a fuel problem. Why is the cold causing you to run rich? Wouldn't cold air cause a leaner condition, if any....that's what the IAT sensor is for.
#22
Re: still having issues with tial wg.. (b16ahybrid)
just because you are not running more pressure does not mean you are not running more volume. you were running a strait t3 turbo and now you are running a t3t4 hybrid capable of much more than your previous turbo. think of it this way... blowing air through a straw at 10psi, now blow air through a tube that is 3 inches in diameter at 10psi. which one can flow more volume? now i dont think you changed your intercooler piping but i know you did change your compressor. i dont think your computer knows what to do. strange none the less
[Modified by ffgeon, 6:46 AM 12/28/2002]
[Modified by ffgeon, 6:46 AM 12/28/2002]
#23
Re: still having issues with tial wg.. (ffgeon)
just because you are not running more pressure does not mean you are not running more volume. you were running a strait t3 turbo and now you are running a t3t4 hybrid capable of much more than your previous turbo. think of it this way... blowing air through a straw at 10psi, now blow air through a tube that is 3 inches in diameter at 10psi. which one can flow more volume? now i dont think you changed your intercooler piping but i know you did change your compressor. i dont think your computer knows what to do. strange none the less
[Modified by ffgeon, 6:46 AM 12/28/2002]
[Modified by ffgeon, 6:46 AM 12/28/2002]
#24
Re: still having issues with tial wg.. (b16ahybrid)
thats what i was thinking, that it would be leaner instead of richer.
so you got it to work?
either way it works great now....
#25
Re: still having issues with tial wg.. (ffgeon)
thats what i was thinking, that it would be leaner instead of richer. either way it works great now.... so you got it to work?