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Still waiting patiently for my intermediate pipe to get here...
Is Dyno Don out of the pipe business now? Too bad he didn't make them for other chassis- looked real nice. I made the mistake of finding a stainless 'deal' on 4in diesel full length exhaust in the same body style- try finding a quiet 4 inch muffle- I don't subscribe to louder is faster and irritate your neighbours Finally found a Donaldson about 30in long that brings it down to about tolerable.
The cam in the video I posted.is way too big for the engine, but a lot of port work to the heads and intake made up for it.
To my mind if you can have a good set of heads they can make up for a marginal cam- I would have thought that over caming and good heads would amplify whatever drivability issue.
I think he stopped making them. In fact, I think there is also a wait on the 3" Dynomax 4th gen intermediate and over the axle pipes. Right now the merge pipe is giving me a little trouble, as it is forcing me to hack down the trans member. I just finished notching it, and those damn pipes are still hitting it. Gonna wind up cutting the whole thing down, then boxing it via weld in key areas...
Don't forget about the throttle body orifice. The heads can flow, the cam can lope, but the throttle body has the final say as to how much is getting in. A 58mm on a 305 with heads and cam like mine is way overkill, and would definitely amplify the problems associated wiith too much cam But then again, bumping compression, though only increases power approximately 3% per one point of compression, will also raise idle vacuum, which is a plus. But anyway, a 52mm throttle body would be ideal, with the stock 48mm throttle working decent. It really comes down to how you're setting it all up ahead of time, and then tuning it to perfection....
Rob,
On your exhaust pipe not clearing, can you make the pipe oval instead of round to gain some clearance without effecting flow? Would that change the tone of the exhaust? Maybe a dumb idea.
Jamie
Last edited by AKPreacher; Sep 24, 2020 at 02:41 PM.
Actually that is a very good idea, its just that oval tubing is very costly. I wound up trimming down the trans member all the way, and so far under hard acceleration I see no flexing or twisting anywhere in the member.
How is your ride going? Did you remember to compensate for the AE TPS & MAP tables when/if running different sized injectors and/or fuel pressure from the bin you started with...?
Excellent. See how she is smoothing out? It must feel great at that RPM now, great job. If you need help with the AE tables by compensating for injector size or pressure just say the word, unless everything is stock (injector size and fuel pressure) then just leave it alone. Great job!
Rob
The fuel pressure is 22lb's. I still haven't got under the hood to see the numbers on the injectors that you wanted me to get. I need to replace 2 of the 16 lifters I got from Summit when I rebuilt the engine before I go further. I haven't flashed that last VE table yet. Doctors and all that entails.
When do we turn the PE back on?
My Boys (three) bought my wife a 2004 Suburban for her birthday. So far it has plenty to keep me busy.
I've replaced the steering gear box after a new pump didn't work, found a big oil leak while doing that. replaced the rear main seal to fix that.
When I drained the tranny you couldn't see through the fluid. The 3-4 clutches are bad about burning out in the 4L60E trans so I pulled it apart and replaced them. They weren't really that bad, worn about .003 for a total of .018 thousands for 6 clutch discs. The 2-4 band was burning the reverse input drum so I replace the band and installed a Corvette 2-4 servo for more pressure to hold the band. Getting the right parts from the trans parts house here took longer than changing the parts. They deliver, and had the right parts in stock but the counter guy didn't know his stuff. Going to install it today. Then I will find out why the windshield washer bottle is leaking.
I would say they paid too much for it if my wife didn't love it so much, she just says she is glad she married a mechanic. I can do most things if it doesn't involve a laptop. I really appreciate you for helping me with that!
Jamie
Last edited by AKPreacher; Oct 2, 2020 at 12:32 PM.
fuel pressure is 22lb's. I still haven't got under the hood to see the numbers on the injectors that you wanted. I haven't flashed that last VE table yet. Doctors and all that entails.
When do we turn the PE back on?
Last edited by AKPreacher; Oct 9, 2020 at 12:03 AM.
Go into that latest bin with the smoothed upper VE table above and reactivate PE by placing the original settings in their places, then Flash it in. If you forget what they were, just copy and paste them from the original bin that you started with. As far as the AE goes, if you are certain you are running stock injectors (even if you're not, don't worry, the difference in fuel pressure justifies this correction until you confirm their actual size, either way), just calculate the new injector flow;
61# injectors that were rated at 13-psi, but are no flowing 22-psi are; 79# injectors...
Rob,
I flashed the smoothed BIN into the truck yesterday. I couldn't drive it but my son drove it to Anchorage last night. I could hear him as he got onto the highway and as he accelerated I told my wife that the truck sounded pretty healthy. About two minutes after he left he called me and said it was like driving a rocket. I haven't had the chance to ride in it yet but I'm pretty excited to see and feel it.
I'm trying to multiply the Map PW by .77 like you said but it won't save to the BIN. I have no idea why but I'm pretty sure it's because I don't know what I'm doing! LOL
Would you walk me through it?
Thanks,
Jamie
* Upload your most current bin into Tuner Pro (I'm using TB4 as an example), and open up the two Acceleration Enrichment tables that we are going to change; AE - TPS PW & AE - MAP PW...
* Drag open each pop up box so that the Value box is visible. Highlight all rows at the same time in each pop up table (will turn gray shaded to indicate you highlighted them for a change, as in the pic), and set your function right above them (in the pop up) for Multiply, as well as using the Value of 0.77 to the right of Multiply. When this is confirmed, then hit Execute to the right of the Value box...
* After you hit Execute, you will see all of the values you highlighted change (decrease in value), as well as turn red indicating they were changed. You will do this one pop up box at a time. Again, I am using the TB4 bin as an example, but the values might be the same in yours back in the first picture above, and if they are, make sure they are now the same as the Red values afterwards...
.
* Now you need to save your work. Click on the floppy disk in each pop up box (see the added red arrow above the word Function in both pop ups to find the Floppy Disk, it is very thin when I added it in, but it is there), and click on it...
* After you click on the floppy disk (save) in each pop up, they will then disappear. You made the changes, however you need to finalize the saved work in the bin you are using. Click on File on the top left in Tuner Pro (see pic below), then click on Save Bin which is highlighted below...
If you want to double check your work, you can close out of the bin, then re-open the bin and click on the same two tables you changed, and make sure they are now displaying the changed values that you see above in Red. If they do, then all is well. You can now Flash it into your EBL system...
- Rob
Last edited by Street Lethal; Oct 14, 2020 at 08:04 AM.
Thanks Rob,
It looks like I was doing it right yesterday, (sort of). I tried again this morning following your directions. Changed the values, clicked on the floppy. clicked on save bin under file heading then clicked on close bin then reopened it to check the the changes and they were all back to the original numbers. This is the same problem I had yesterday, it wouldn't save the changes.
I never realized there was more to the pop-ups until I saw yours. I opened each pop-up a little further and there was the value and execute buttons. LOL Yesterday I sat here and did each entry one at a time with a calculator. Talk about doing it the hard way.
Any ideas why mine won't save? I tried it twice this morning.
It may be that the laptop security settings are a tad too high. Although usually this produces an error message. Set TunerPro to run as an administrator.
Right click on the TunerPro desktop shortcut. See if there is a line that states to run this program as an
administrator, if so click the check box and click apply or OK to close the dialog.
If no line then select the Properties dialog, compatibility tab and that line should be there. Check mark it and click OK.
Plus one to the above, and just to be sure, make sure you are changing your own bin and not the bin(s) that comes with the EBL software because they are locked and won't change. So be sure to upload your own bin, the most current one, into Tuner Pro to make the change...
OK, I've tried it again and I got it to save, except, the numbers don't match up with the numbers I got yesterday by doing it long hand, (multiplying each line one at a time), on the AE TPS PW. Is there some other sort of math going on in the program?
The first line reads 122.07 on the AE TPS PW. After highlighting the numbers and multiplying, that first number does not change it stays at 122.07. I've tried several times and keep getting the same results after saving. With that said, when I use the multiply function the numbers are the exact numbers I got yesterday when doing it by calculator. After I save it, close it then reopen it the numbers are not the same and the first line again reads 122.07, same as before I multiplied. The number I had after I multiplied for 122.07 is 93.99 and that is what the number is when I save but is 122.07 when I reopen. I'm sending a screenshot. The first screenshot is the results of multiplying by .77. The second screenshot is before multiplying. And the one in red is after multiplying but before saving.
Looks like the screenshots didn't come out in order sorry.
Last edited by AKPreacher; Oct 14, 2020 at 11:26 AM.
Try this, open the same bin where the changes refuse to save after you made them, make the changes again, save them after you see the new values in Red. But this time, click on (in Tuner Pro);
File > Save Bin As > and add an .02 (or the next number) to the new bin. Close the new bin, open it again, and see if it saved the new values...
Rob,
Ok, I did what you said, and yes I have a new number for the file, thanks for that, I tried to do that on my own but wasn't successful.
Still came out with the same numbers as in the screenshots I sent a few minuets ago. Can those numbers be right? That doesn't really make sense.
Jamie.
Rob,
I know they will decrease because you are multiplying by less than 1. If you look at the numbers in red from my last post, they are the correct numbers, right? They are the same numbers I got with a calculator.
The first screenshot shows the numbers after they were saved. Notice the first line in both before and after screenshots, both numbers are 122.07.
In the before screenshot, (the one with the highest numbers), if you multiply them by .77 the numbers you get are different than the numbers in the saved screenshot, the saved screenshot is the one with the lower numbers that are not red.
Jamie
Last edited by AKPreacher; Oct 14, 2020 at 12:28 PM.
> that first number does not change it stays at 122.07
This is normal, the resolution of the AE PW values is about 61 uSeconds. So a value needs to change by at least 31 uSeconds in order to actually change to the next multiple of 61.
You can check the resolution of various parameters by looking at the conversion equation in TunerPro.
No, I did not mean you were questioning the calculation method in terms of why the value is lower as the outcome, I was referring to if you were questioning why the value needed to be lower when changing injector size, that being because the AE is pulse width based and not affected by any changes being made in the BPC. As for the screenshots above, I see them. The lower picture is from the stock bin, the second picture is after the calculation with the Red indicating the changes that were made, and the first picture, which should be the last, shows the values being a tad skewed from the Red values. That is a normal process in Tuner Pro, calculation wise. I can go in right now and change from 122.07 to 100.00 using the Fill w/Value as opposed to Multiply, save it, and it will still comes back as 122.07. It just means that it reached its' furthest point and will not go any lower than 122.07 (resolution wise). Or, I can change it to 90.00 from 122.07, save it, and it will come back as 61.04. Normal. As far as the other values below that, again it is normal in Tuner Pro. Same difference when applying 10* Initial SA and Tuner Pro changes it to 9.84 on its' own...
- Rob
Last edited by Street Lethal; Oct 14, 2020 at 12:39 PM.
Finally found a Donaldson about 30in long that brings it down to about tolerable.
