You moved it the right direction. It could go a little further, maybe.


Did you start it?

 

Thanks for the speedy response QM. Yes i started it and took it for a run, there was no change in performance at all, thats why i'm wondering if i did it right or not. Damn gasket came off under that cap and was a real pain to get back in place, no room in there.


Are both those parts suppose to move together, moved them about 1mm as per instructions, about the width of a screwdriver blade.

 

I think you did it right.


I would bump it another 1mm and see how it idles after that( rough idle= you've gone too far).

 

So after putting on 4" exhaust and doing the optic bump i have no noticable increase in 0-60 times, what gives here? Vacuum from pump is 23" hg, vacum at waste gate is 13" hg, no codes! Whats stopping this thing from going? Can here the turbo whine hard around 2000 rpm.

 

'What's stopping this thing from going' You ask?


In a Word...


Re-Flash...

 

I think you've actually taken it a little too far and are losing power from too much advance and going out of the pumping range of the pump. You need to go about halfway between where you started and where you are. Put the lock plate flush on this drivers side with the optic, your just past it right now.Edited by: Texas Diesel Guy

 

Did you get a chance to change that again CR??

 

You can turn up the boost but guage it first, EGT during your pull that blew the head gasket would have told you to stop.

 

Did you get a chance to change that again CR??

Yes i just finished changing it again, bumped it back almost to where it was, no change in performance, maybe a little more black smoke now but not sure until tomorrow on the way to work.


Why can't i get better performance with the new exhaust and optic bump? TDG figured i went to far, QM figured not far enough? What is it?


Could i have 1 dead cylinder, ie: plugged injector? and not notice it, it runs smooth at idle and seems smooth on acceleration, just nothing there? Good whine from the turbo. New fuel filter, new air filter, lift pump fills everything when i changed filter. I'm just not getting it here?


Bumped back

QM you may want to lighten this image too.


(ok)Edited by: quantum mechanic

 

Yeah, your basically back to stock now. Its a very very fine adjustment, a little means a lot of change.

 

L-56 EGR is tuned for L-56 performance level - anything more and exhaust pressure becomes greater than calibrated EGR valve spring tension.


Allows EGR bypass over PCM control.........

 

L-56 EGR is tuned to make emissions happy, CR's truck is an L-65 and doesn't have an EGR.


If you had a dead cylinder, you'd know it, white smoke, and SES Light for cylinder balance fault.Edited by: Texas Diesel Guy

 

L-56 EGR is tuned for L-56 performance level - anything more and exhaust pressure becomes greater than calibrated EGR valve spring tension.


Allows EGR bypass over PCM control.........

Was that for me? I have no EGR.

 

CR, Your 95 is EGR, Right?


Did EGR play a role in cooking his block pulling that travel trailer through the mountains?


TDG wanted you to line up the two squares on the right side.Edited by: quantum mechanic

 

My fault gmctd, my sig line was wrong and i've corrected it now, oops.


Yes QM my 95 is EGR, i don't think it played a role in cooking it, that was my own stupidity, just let it get to hot and you know what its like when your near the top and going to go down the other side... it'll cool off. Just stayed in it to long, good thing its only the gaskets really, i could have done alot worse to it. The pistons are minor, its not going to be a race truck. Maybe the 2000 though....lol.


I may make 1 more attempt at the optic bump and put it between where it is and where it was but its starting to look worthless to me right now. JMO. Does anyone else have a good pic of where it works good at? TDG?

 

I'll post a picture of where I'm running mine.

 

Put the lockplate just shy of flush with the side of the sensor, when you first moved it, you went past it and the second time went back to its original location. Try and go right in the middle of those two extremes.

 

1:1 is pretty much stock, 2:1 very mild gain, 4:1 is the limit, after that you may see loss of power.Edited by: Texas Diesel Guy

 

Am i getting any better?

Haven't taken it for a snort yet..

 

perfect, let us know how you like that. Should be a change just revvin her up in the driveway.Edited by: Texas Diesel Guy

 

Well... in a couple of words here.......


zero, ziltch, nadda, zippo, nothin, #@&%!...... aarrghhh!!

 

More smoke? anything? If there's smoke you got the fuel, just need air to match it.

 

Maybe a little more smoke on hard acceleration... MAYBE.


Do you have a private email? I tried to send a file to you but it came back on the email you gave me a few days ago. My email should be listed in my profile.

 

Just how slow is it?


Any chance the transmission is slipping so it can't put any more power to the ground?


Bypass the wastegate solenoid and take it for a test drive (vacuum straight to the turbo)


If you can't feel a difference in the power then something must be wrong. (if you don't let off after about 10 seconds or so, you will set a code and loose power till it is restarted)

 

Whatnot.


I think the power is getting to the ground, brake stand will spin the wheels. (especially since i noticed both axle seals are leaking but thats another day).


0 - 60 in 15 seconds, didn't change with exhaust and didn't change with bump, no boost guage but you can sure here the turbo whine even before the exhaust upgrade. Times are run in 'D' everytime, but there might be a shift issue, hense me wanting to email TDG a file. ( 0 - 60 in real time, with cool exhaust sound...lol)