Do I have a problem?
Thread Starter
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Cargo Master
Joined: Jan 2005
Posts: 2,902
Likes: 2
From: Pasadena, Maryland
Do I have a problem?
Hello all. I have about 100 miles on the truck after these mods:
New up pipes
New BB Turbo
Reman Full force SS injectors
New glow plugs
New UVCH and gaskets
ITP(or whatever its called these days lol) Regulated return
Itp's in tank mod kit
I sent my F-5 back to DP to get re burned for single shots and have a couple of tunes added. My problem is that I have very little low end boost. Unless I really stand on it going up a hill I cant get over 20 psi. I made a cold air pressure tester today and found no major leaks and all the boots were tight. I have no evidence of leakage at the up pipes either so I'm pretty confident that they are tight as well. Am I expecting too much? At least before it would set you back in the seat when it built boost on the lower end. Now on acceleration I see 5-6 psi.
OBTW the wastegate rod is adjusted and the red line removed and capped and doesnt make a difference at all.
Any insight would be greatly appreiciated.
Duncan
New up pipes
New BB Turbo
Reman Full force SS injectors
New glow plugs
New UVCH and gaskets
ITP(or whatever its called these days lol) Regulated return
Itp's in tank mod kit
I sent my F-5 back to DP to get re burned for single shots and have a couple of tunes added. My problem is that I have very little low end boost. Unless I really stand on it going up a hill I cant get over 20 psi. I made a cold air pressure tester today and found no major leaks and all the boots were tight. I have no evidence of leakage at the up pipes either so I'm pretty confident that they are tight as well. Am I expecting too much? At least before it would set you back in the seat when it built boost on the lower end. Now on acceleration I see 5-6 psi.
OBTW the wastegate rod is adjusted and the red line removed and capped and doesnt make a difference at all.
Any insight would be greatly appreiciated.
Duncan
Thread Starter
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Cargo Master
Joined: Jan 2005
Posts: 2,902
Likes: 2
From: Pasadena, Maryland
I cruise with this truck at around 2000 RPM at 70 mph. Believe it or not I kinda baby the old girl.....
Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
I baby mine also so the boost numbers are going to be low. With larger injectors and that BB turbo, either hook it up to a trailer like Kwik mentioned or put it in 80E and go on a long sretch of road and open it up, you should see those boost numbers go thru the roof, if not, somethings wrong. On stock sticks and my 38R and in the 80E at WOT I peg my needle at 30 psi's, on a 30 psi gauge, who knows how much more there is. Adam0331 and Philip Barardi seen it to confirm my boost numbers.
Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
Duncan, a bigger turbo means more efficient movement and volume of air. Boost is a measurement of RESTRICTION, not of volume of air, so you should see a lower boost number at a similar load if the new "better" turbo is operating in it's efficiency range, map wise.
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Postmaster
Joined: Jan 2009
Posts: 2,544
Likes: 4
From: Suffolk, VA
He should be making a lot more boost than that. I bet you need to tighten the wastegate actuator rod some more. Make sure you have the baby's butt connected tight at the back of the turbo.
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Thread Starter
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Cargo Master
Joined: Jan 2005
Posts: 2,902
Likes: 2
From: Pasadena, Maryland
Everything on the exhaust side is tight. I drove it another 100 miles today. SES flashed once and I have no idea why. The funny thing is, that with the chip in the stock position, It will barely idle once the engine is warmed up. The hpop pressure flucuates around 300 psi and the engine idle is 5-600 rpm and stuttering. Move the chip to any other tune and the pressure increases and the idle is fine. Going through the gears the acceleration is sluggish, once in 6th it pulls nice around 2200 rpm. Too much traffic to go too fast today.
I'm beginning to wonder if it is in the programming. The wastegate actuator is tight against the stop.
I'm beginning to wonder if it is in the programming. The wastegate actuator is tight against the stop.
Thread Starter
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Cargo Master
Joined: Jan 2005
Posts: 2,902
Likes: 2
From: Pasadena, Maryland
I'm thinking the same thing but I can't even set the SES no matter how hard I've tried. I did it before with the stock injectors and turbo on 80e....
Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
Sounds like something is definitely wrong then. I have AE and I am not very far, we can hook it up and see what's going on, although I'm not too good at knowing what to do with it once it's hooked up. I am sure some of the smart people here could tell us what to look for and we could go from there.
Thread Starter
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Cargo Master
Joined: Jan 2005
Posts: 2,902
Likes: 2
From: Pasadena, Maryland
Sounds like something is definitely wrong then. I have AE and I am not very far, we can hook it up and see what's going on, although I'm not too good at knowing what to do with it once it's hooked up. I am sure some of the smart people here could tell us what to look for and we could go from there.
Thread Starter
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Cargo Master
Joined: Jan 2005
Posts: 2,902
Likes: 2
From: Pasadena, Maryland
Update
I was checking the intake the other day with my pressure checker and found that I had 20 psi of pressure feeding the intake from my air compressor(calibrated guage) and only 9 psi indicated on my boost guage in the truck. I found that I had over tightened the small teflon hose and pinched it at both ends. I have bought the AIP fitting from Clay and will use copper tubing to run to the guage when it arrives. I took the truck out and ran it hard and it set the SES at WOT. Thought I'd pass that on as something to check.