SCOTTY....I need more power!!!

[jeffnzoya]

Left out Sunday for Edisto Island, SC with our 29 Foot FWT IN TOW.

As soon as I got started I noticed that the camper felt quite a bit heavier than I remembered it last. I was watching my boost guage and 19 psi for about a second was all I could get. I was expecting more with the heavy load. Not only was that it, but it felt like there was no throttle response and any little hill was noticed big time.

There is a good pull up the mountain on 26 out of Erwin, TN to Ashville, NC. and I noticed a lot of hiss from the DIY intake. It sounded a little different, so I pulled over to check it out and found the filter had blown off the connecting tube. I thought that I may have left the clamp loose so I give it a few extra turns. Back on the road and as soon as I had to get the boost up around 16 to 19 it blew off. I limped on to the camp ground.

Today, prior to the return trip, I took the chip out and reprogrammed my truck to stock. I wanted to see how it pulled stock and what kind of boost it would get. Since the chip has been in my truck since I purchased it I have never towed in stock setting.

AND I NEVER WILL AGAIN. No power at all!!! 14psi max boost and had to run WOT many times just to try and stay above 60 and keep out of the way of semi's that were blowing my doors off. Actually dropped to 2nd gear 4 times. Never done that before.

Although the filter did not blow off on the return trip, It did make alot of noise, and any time the turbo has to boost it hisses very loud. Has any body else had this problem with there DIY set up. I can't help but think this may be part of my boost problem.


Jeff.

 

[Tail_Gunner]

From what you describe with the unchipped boost of only 14 psi and the sense of the trailer "feeling heavier", I'd be checking the donut gaskets on the up-pipes. If they're worn & leaking, you'll experince a loss of power, boost and higher EGT's under power.

If your hearing is real good, I suspose you might even hear an exhaust drive pressure leak.

If you're blowing intercooler pipes out of the connector boots, make sure they are clean & dry before re-assembling them. I actually used a pliers and GENTLY flared the end of the tube out like a bell ever so slightly. It has work very well in keeping the tube from popping out of the connector boot. I found putting a 2nd hose clamp on also helps keep things together.

 

[jeffnzoya]

I replaced those gaskets a few weeks back. There was a bad leak and I just knew that would fix my problem. It brought me from 17 to 19, with the chip.

Jeff.

 

[95_stroker]

How can you blow the intake off?

 

[dpantazis]

jeff-

your intake is not blowing the filter off.

think about it, the filter can not generate ANY back pressure to come off. my bet is that its vibrating loose. the turbo can not pressurize the suction side, its just not possible.

as far as your boost numbers go, you either have another bad boot connection. i would check the ones on the intercooler. cold side esp.

aside from that, then try replacing your MAF sensor. it might not throw any codes if its slightly out of spec. its a $50 part. that solved my problems and i was chasing phantom boost leaks for months. ask these guys, i was a total PITA!

dp

 

[BIG JOE]

As well as the I/C boots..you Also might check yer "Y" pipe boots.. the ones Under the Turbo. When there's Hiss, loud enough to hear.. in the cab ? It often can be one of the Y pipe boots, or both.

By what you describe... sounds like yer make'n boost, but loosing it somewhere.

If yer intake/air filter set-up is un-supported (just held on/up by a couple'a clamps ?) yer guna need to support it, in place, somehow. As others have said.. Ya just cant hardly >BLOW< an intake/filter off.. Fall off (?), Yes

 

[jeffnzoya]

OK, I am glad to get some feedback on this one. I am useing the word "blow off" because that is what is acts like to me. As long as I keep out of the throttle, and keep low boost, under 16lbs, it stay's on. However, when I get on the throttle hard and or let off hard it comes off. Also, during the 3 fairly tuff pulls on the way to the beach, I had to leave it off and twice during kick down, the check engine light came on and then went off after a few minutes.

As far as the ic boots and the y pipe boots, I inspected, washed in soapy water and reinstalled after the ccv mod and up pipe gasket replacement.

JUST A THOUGHT. While I had the turbo off, I adjusted the wastegate rod, (in, 4 turns I think.), could that be my problem. What would happen if I turned the rod the rong way or adjusted it to far?

Also, what would be normal egt's in stock mode. To maintain 65 to 70 they stayed at 800, which I felt was kind of high. I also read that if the probe is mounted on down tube add 300 at WOT. It got up to 1000 a few times before kick down and I also read that 1300 is as high as you want to go.

Got to go to work, hope to read more tonight.

Jeff.

 

[BIG JOE]

OK, I am glad to get some feedback on this one. I am useing the word "blow off" because that is what is acts like to me. As long as I keep out of the throttle, and keep low boost, under 16lbs, it stay's on. However, when I get on the throttle hard and or let off hard it comes off. Also, during the 3 fairly tuff pulls on the way to the beach, I had to leave it off and twice during kick down, the check engine light came on and then went off after a few minutes.

* You'd Really be surprised of the Turbulence that's going on, in and around an air filter when yer WOT. Wobbling, Shaking and Vibration at various CFMs... Unless it's fixed or secured by some sort of bracketry.

My guess would be: When you put a heavy throttle demand on.. the intake suction is holding yer DIY intake together and colapsing yer filter, some . When you let off.. The sudden release of intake suction causes the set-up (filter) to return to normal... rapidly.. causing it to FALL off. >In Effect< I guess.. POP off. Not Blow off.


As far as the ic boots and the y pipe boots, I inspected, washed in soapy water and reinstalled after the ccv mod and up pipe gasket replacement.

* If yer boots are origonals (?) they're 8 years old.. you could have Hair-line cracks that only open when under pressure .

You had said in an earlier Post you had expanded the flanges ? Maybe you now don't have a good donut seal at heavy throttle demands.

JUST A THOUGHT. While I had the turbo off, I adjusted the wastegate rod, (in, 4 turns I think.), could that be my problem. What would happen if I turned the rod the rong way or adjusted it to far?

* JMO but 4 turns IN on the W/G rod isn't an issue here.

Also, what would be normal egt's in stock mode. To maintain 65 to 70 they stayed at 800, which I felt was kind of high. I also read that if the probe is mounted on down tube add 300 at WOT. It got up to 1000 a few times before kick down and I also read that 1300 is as high as you want to go.

* I won't Go There.... on Here . EGT Probe location opens Pandora's Box on ANY dezel related site..

Got to go to work, hope to read more tonight.

Jeff.

Yer Gremlins are DIY fixable Jeff.

 

[jeffnzoya]

I am sure it is diy fixable, however I am running out of options.

Jeff

 

[scotty]

I've given all i can captain.