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Yes, a good cooler could eliminate that, but Im just saying we dont have them stock, and so when you get it, the trans could have been through a lot of stress. A tuned trans can do better. And by modding I mean the shift kits to get higher pressures. If you want 100psi line pressure I can...

That is the correct chip for you, as long as its not aftermarket that messed it up. Sounds like you may need to take the OS out, clean it off and put it back in so you get the right 6-10mm^3 warm idle fuel rate, then reset your TDCO.

The 4l80E can handle a lot, but most of them have 200,000+ miles on them, and who know what former abuse. Hot rods put them in, but they dont tow stuff to get them really hot. And GM wasnt very nice about giving you good pressures for handling more power. A tuned tranny would be happier than...

Very nice. Also got the torque in a bit lower, and I am guessing the curve rises faster than before. Would be great to know what boost you ended up seeing, which might suggest whether more fueling is alright without an intercooler. I believe the DS4 IP outputs more fuel at low RPMs, at least...

OK, well you might be having some different issues here. a 1994 K3500 may have come with a DS4-5068 IP. This has a different cam ring than all other DS4 models and has different IP mapping in the PCM PROM. You may have a PROM mismatch if the IP or PCM was swapped out with another, and the...

I do not recommend adjusting the OS at all unless you have used a scanner to verify the warm idle fuel rate is not within a range of 6-10mm^3 on diesel fuel. So if you adjusted it without that feedback you can make the issue worse. Or did you mean you adjusted the IP to the drivers side of the...

Did you run a TDCO learn when installing the Heath PCM? Can do with KOKO method, if not that would be the first thing I would do, it might clear things up. Its required anytime swapping a PCM. Not when swapping OBD1 chips, but if you swap the whole PCM, CPS, IP, or timing chain You could...

Yes, 99 will be direct replacement for 94. Although maybe in late 99 or 2000 they came out with a beefier 4L80E you may be interested in, but on those the cooler line ports may be in a different place. I dont know what all was different, solid transfer shafts, so you can keep TCC locked...

The reason it smokes is likely lots of timing advance, not only can it cause lots of smoke but preignition. Combine that with lots of fueling available at low RPMs and it will likley smoke if you dont have the turbo spooled. With a larger turbo there is a big tradeoff you have to consider in...

You'll notice one thing for sure, more diesel clatter at idle if you like that. And hopefully better combustion efficiency under load, less haze/smoke, lower EGT, better power, more mpg. Although its likely most noteable for towing, where youre loaded for long periods of time, especially on...

But if the injector pops at 2100psi, then regardless, the first fuel coming out (or not if cylinder pressure is higher) is at 2100psi, even if the plunger pushing behind it will push it to 5000psi or higher. So what if youre running 40psi of boost with a 21:1 CR, at what point does your...

I really think of the problem being that you inject into higher pressure, so you'd get really poor atomization and spray pattern/direction. May be forcing the fuel out while its starting to burn due to really high air temp as well. Not a good thing in general for efficient combustion...

Not a theory, physical fact, CR of 21:1 and 20lbs of boost will put your cylinder air pressure at TDC over a pop pressure of 2200psi. There is some pressure bleed down past the rings, but less and less with increasing RPMs. So if someone wants to run 30psi of boost they really should be...

Because cylinder pressure will exceed pop pressure at high CR and boost.

I never said your truck runs bad, I applaud your fabrication skills, and I was trying to explain that the turbo number doesnt matter, its the physical configuration, and fueling profile. It would be easier if the turbos didnt have such a wide range of wheel and housing sizes, it makes them very...

Do you replace the heat shield, bottom washer/gasket thing with every rebuild? Not sure that would affect performance before use, but might not last as long in use.

It all depends on the housing sizes and wheels. His may have an 18cm^2 exhaust housing, or some people get smaller. The center mount helps get all the exhaust pressure to it much more efficiently as well. And if what you get now days is cheap crap, it might not be the same. Plus the 6.5td...

I know someone that has worked with a lot of German Bosch nozzles and never had an issue when new. Thats not taking them out to inspect down the road, although thats what was in there from the factory, some guys ran for 200,000 miles.

Are they the same as a 6.5 mount? And do you want to change them in 3 years? There was something wrong with my stock mount for a long time, since before I bought it, although it was 13 years old at that time. On stock power, but we have had older vehicles that never had to change a mount. IMO...

I dont doubt everyone, just people that have proven themselves doubtable. And how could I doubt a ruler measurement? And if you don't share information its not much of an innovation or use to other people.