Increasing Boost
#1
Increasing Boost
I recently installed IC piping, greddy BOV, intake and guages in my 98 gst. I have a manual boost controller set to 10 psi. However, when I run the car at high rpm and boost, I get to a point where the car just goes dead. It feels like a bomb has gone off. Its prtty brutal. Has anyone experienced anything like this? The thing is it doesn't happen all the time. I'm just running 10 psi so I dont think that its too much boost. First I thought it was a clutch thing, but if it was a clutch the car would continue to rev but it doesn't. It feels like something blocks the intake at that very moment, then it releases. Very strange - very scary in fact. Anyone know anything about it?
#7
RE: Increasing Boost
ORIGINAL: Jeffisdecentttttt
from what emonz describes fuel cut as being, that sounds like you are definately hitting fuel cut. You may be running more boost than you think...
from what emonz describes fuel cut as being, that sounds like you are definately hitting fuel cut. You may be running more boost than you think...
There is no SES light on right?
#8
RE: Increasing Boost
No there are no SES lights on. We ran the boost wire from the MBC and the guage works great when I'm going down the road. I accelerate and the needle corresponds with the stock gauge. Is this the correct way to run the boost pressure wire? It reads 10 psi. But I was just driving the car a little while ago and I def have a leak. I reach up to about 4000 rpm and then I hear like a depressurise sound coming from the engine. So I think its def a leak I have to fix. Would this fix the fuel cut off prob or is that another problem?
#9
RE: Increasing Boost
ORIGINAL: mtalma
No there are no SES lights on. We ran the boost wire from the MBC and the guage works great when I'm going down the road. I accelerate and the needle corresponds with the stock gauge. Is this the correct way to run the boost pressure wire? It reads 10 psi. But I was just driving the car a little while ago and I def have a leak. I reach up to about 4000 rpm and then I hear like a depressurise sound coming from the engine. So I think its def a leak I have to fix. Would this fix the fuel cut off prob or is that another problem?
No there are no SES lights on. We ran the boost wire from the MBC and the guage works great when I'm going down the road. I accelerate and the needle corresponds with the stock gauge. Is this the correct way to run the boost pressure wire? It reads 10 psi. But I was just driving the car a little while ago and I def have a leak. I reach up to about 4000 rpm and then I hear like a depressurise sound coming from the engine. So I think its def a leak I have to fix. Would this fix the fuel cut off prob or is that another problem?
When you fix the leak, your boost gauge will probably show that youre running higher than 10 psi. You will then lower your mbc, and then you're good.
15 is the highest you should run your boost on stock fuel safely btw...
#10
RE: Increasing Boost
My boost gauge is TEEd off of a VAC line on the intake manifold. I wouldnt want my boost line run all the way up to near the turbo and waiste gate that is further away from the guage and may cause a faulse reading(probly not though)
you are lickly running higher than 10PSI but the pressure is being leaked out is my guess. I would find the leak then watch your gauge and adjust accordingly
you are lickly running higher than 10PSI but the pressure is being leaked out is my guess. I would find the leak then watch your gauge and adjust accordingly