Mopar1973Man

My bad I was looking at air flow.

Still this where I don't get it. You are claiming your HP number and comparing to these other engine specs as a guideline for exhaust flow. (around 900 cfm roughly speaking) Ok... I got that... But now when I look up the muffler you plan on running it capable flow rate 1431 to 3100 cfm (at 1-3" Hg backpressure). I just can't see you getting that attenuation out of that muffler being when you read the section on back pressure. So you increase the tube size inside the muffler area backpressure will be nil. Out of the 3 types, I'm assuming the 3rd is the truest that you are going after. Because the first two types won't work because of the oversized tube inside the muffler. But as you see the second picture showing higher back pressure give better attenuation but in your case there is going be very little if any. So this is where my confusion is.

First off if you do get ahold of them find out the source of where they get them at. Then check my list in the article section to see if they are certified Bosch rebuilder of VP44s. Too many people claim to be rebuilders but don't carry the Baosch 815 Test stand for calibration of the PSG unit on the VP44. It takes about 3 hours of run time on the Bosch 815 test stand to get the PSG flashed. Yes you could rebuild pumps without flashing which a lot of shops sell rebuilt VP44's with used PSG's which is a gamble.

Still don't understand how 5" muffler is going to work on 4" pipe. Seems rather weird. I figured you would step up ot 5" pipe keeping the flow up and then using 5" muffler. Still trying to wrap my head around what I read on Donalson catalog and what you are saying. If this flow and attenuation was an issue wouldn't more manufactures of performance exhaust being doing what you saying? So could you point out the pages and what you're doing so I can see how this works?

Still, after reviewing the Donaldson catalog it seems backward to me that using a larger ID muffler to attempt to make quieter? Explain how your theory works?

Why? So if I opened every joint and installed o-rings you would change the accumalator? I wouldn't. No sense in it. When you place a vacuum on the accumulator you automatically reconditioning the drier as the vacuum is pulling the moisture out of the drier in the accumulator.

Here is where business and private person draw lines in the sand. Business folks have to play by the rule book and do it the "Right Way". Then there is the "Common Joe" that don't have access to a bunch of fancy tools and machines most here have at least the manifold gauge set and vacuum pump either electric or air driven. Technically to be absolutely perfect about it yes the business side would be right. Since the Common Joe doesn't have the funds or the tools then most times out of ten Common Joe takes a few shortcuts that might cause problems but if they take the extra time you can get away with it. Using compress air from a compressor that is drained and not been running in awhile should be safe. You'll need to run vacuum longer to draw any moisture out. Still in all any new accumulator, you open the ends up to the atmosphere is no different that using compress air as same just compressed.

Puzzled? How can a straight flow through muffler be restrictive? Like even the old NAPA muffler I ran was just a straight pipe muffler 3" in and 3" out and see straight thru.

Ive got my exhaust system tonight. From Source Automotive. 4 inch muffled diamond eye.

Url issue. Yeah I know about it.

I just had another update to my Android 7.0 software this morning ill continue to montior this. Last few time has been mixed bag. Tell Quadzilla to connect 5 to 7 times attempting to hook up. Other times just fire it up and it works.

You can use compressed air for testing but you'll need to pull vacuum for more time to ensure the system is truly dry again. As for leak checking vacuum test is kind of flawed. Like in my last job the system held vacuum fine. Leaked badly. Vacuum test passed becaused it sucked a bug in the hole of the condenser and blew off after Freon was added. Do not attempt to run the compressor with compressed air.

Latest update is in the download area. There is no reason for downing previous version being the most likely dont work.

Not that I know of. It based on RPM and light throttle. That's the best I can give you. I know if I drive with heavy foot you don't notice it. Now if you being mellow cruising parking lots then it pop up. Most commonly in small town speed limits down 25 MPH or following tractors on the highway.

Yes. Gear doesn't matter nor speed just the light throttle in that RPM range. As soon as you start gaining RPM at light throttle or mash into the throttle the miss is gone.

Something about the Quadzilla not following the fueling table or the ECM isn't releasing fully? It's a very random miss and disappears as the TPS and RPM rise. The starting edge of the Quadzilla data is like very dirty or something.

Like myself, I've got an escape plan too. There is a bag behind my driver seat that is filled with everything to keep you alive for at least 1 day for two people. As for at home I'm stocked up on fuel, water, RV typically is keep stocked through the summer and ready. There is the guest house but that's a trainwreck now. Still there is plenty of supplies here to keep us alive for days, weeks, months if needed. Even gone as far as having canned powered items like powdered eggs, butter, milk, cheese, etc.

I've never lost any parts off my truck maybe that ol' broke down Ford Powerstroke that farmer Joe owns... I know you mistaken my truck it never throws parts... (Knock on wood - banging on JAG1 head!)

Yeah I pulled it till I can things fixed. I'm still not getting very good MPG's from any of the tunes and battling this from the start. I can touch 20.x once in great blue moon but most are 17-19 MPG which is just as good if I just removed the entire Quadzilla and ran without it. I've done that a trip or two to see the offset it pretty minor. I'm still running 250 miles every Tuesday, Thursday, and Saturday. Some day after I wore my truck out I might get back to my awesome mid 20's. I've not seen any of those since last fall which I done a few and then it was gone.

I've got to publicly announce this. I've got to say "Thank You Jacob and @dieselautopower!" Since he's been keeping in touch with me with the Quadzilla and other things. I got got a letter address from Utah I knew the address seen it enough times. Well Jacob sent me two prepay debit cards for fuel to help out with running @MoparMom back and forth to Dialysis. More or less bought me a tank a fuel and maybe a meal for both of us. Again Thank you Jacob for this personal donation and helping out.

After talking to Jacob at DAP he's suggesting the muffler as well. 4" with muffler is about as loud as a 3" without a muffler.

No. As long as it's in warm up mode no issue smooth running. As soon as it flips over to red bar and Quadzilla it start to miss at that low throttle.

Random. All you've done was moved it to 1,000 RPM starting point. Below 1,000 runs smooth and normal. Still in all turn it level zero or just unplug the Quadzilla problem gone.

Because it's much thicker gear lube compared to ATF that comes factory filled in the G56. People commonly think that 50wt is going to be thinner like I did and found out it's thicker. This is why older Getrag transmission was loaded from the factory with would you believe 5w-30 engine oil. This isn't even a GL rated oil just plain ol' engine oil 5w-30. Strange after doing research on all the different types of lubes used in all the different series of transmissions. What strange are most people have strayed from factory specs and went their own way to resolving shifting and longevity issues. Strange to see even G56 factory filled with ATF+4 and called good.

Even with it cut off under the cab right now straight piped and turned down is quiet while cruising. Yes you can hear the note rather well with the windows down and rolling the gear on a heavy foot. I've been driving on this now for 2 days not bad for shorty straight pipe. Enlighten me... I want to hear about your research on exhaust systems. I'm not getting much info other than just buy the cheapest thing out there...