This thread is for the results of the testing of the differnece pop pressure at the same size.   

 

ANY REPLIES NOT ON TOPIC AND OR WITHOUT DATA WILL BE DELETED.  

 

I will be running 3 sets of DAP injectors first set at 305 bar, next at 330 and the last at 350 bar.  We are going to compare real world situtations and what the pros and cons are of increasing pop pressure.   All tests will be datalogged and video taped if applicable.   

 

The tune will be EXACTLY the same for all injectors.  al runs done on Lvl 3, so no wiretap being used

 

  Quote

Timing Parameters
Fuel Load Timing	3
Low PSI Timing Reduct	5
Timing Reduct Scaling	50
LightThrottle Timing Adv	1.5
Light Throttle Limit	30
Timing Equilzer
1500RPM	17
2000RPM	20
2500RPM	23
3000RPM	28
MAX	30
Boost Level Fueling - CAN Bus
0 PSI	66
1 PSI	66
2 PSI	67
3 PSI	68
4 PSI	70
5 PSI	71
6 PSI	72
7 PSI	74
8 PSI	76
9 PSI	78
10 PSI	80
11 PSI	82
12 PSI	84
13 PSI	86
14 PSI	90
15 PSI	94
16 PSI	98
18 PSI	102
20 PSI	106
22 PSI	110
24 PSI	114
26 PSI	118
28 PSI	120
30+ PSI	120

 

 

Test conditions. 

 

  Quote

 

 

1. 0-60 WOT take off, same stretch of road

2. 55 mph egt on same stretch of road showing egt

3. Lugged 45 mph locked od pull to compare spool.  

 

 

 

 

305 BAR

Test 1 0-60 WOT take off, same stretch of road

 

 

 

 

Test 2 55 mph egt on same stretch of road showing egt

 

 

Test 3 Lugged 45 mph locked od pull to compare spool.  

 

 

 

 

 

330 BAR

Test 1 0-60 WOT take off, same stretch of road

 

 

Test 2 55 mph egt on same stretch of road showing egt

 

Canbus fueling is ~1125 and egt right around 710-725*f  ( road is slightly uphill

 

 

Test 3 Lugged 45 mph locked od pull to compare spool.  

 

 

350 BAR

 

Test 1 0-60 WOT take off, same stretch of road

 

 

 

 

Test 2 55 mph egt on same stretch of road showing egt

 

 

Test 3 Lugged 45 mph locked od pull to compare spool.  

Edited February 12, 20187 yr by Me78569

  On 8/23/2018 at 8:29 PM, Dodgeih said:

I have one I just have not looked at it to see if there is any evidence of what happened. I will not have time to stand through it probably for a couple more days. I can attach it and if someone's wanting to look it is right towards the end of the data log. As I'm coasting. I was going about 90 mile an hour before and was coasting to a stop sign when it happened.... 

surge.csvUnavailable

I see where it kicks up to about 1/4 load at 0 throttle input right as RPMs drop to idle. Line 4285.  Do you have an oscillating surge when rpms drop to idle after high power runs? Cause I do.

Edited August 24, 20186 yr by trreed

So the injectors are pulled. I'm torn between 315 and 320(settling should be 305 or 310). 

 

Anyone else have any input before going to the shop, I will be this coming Wednesday. 

 

Besides @Me78569 is there anyone else running higher pop pressure that you know of @Mopar1973Man?

 

Edited September 8, 20186 yr by pepsi71ocean

Should be all listed here in the thread.

  On 9/7/2018 at 1:45 PM, pepsi71ocean said:

Anyone else have any input before going to the shop, I will be this coming Wednesday.

Mine are supposed to be set to 320, if they are then I love it. 

  On 9/11/2018 at 1:35 AM, Dieselfuture said:

Mine are supposed to be set to 320, if they are then I love it. 

This is good to hear, I have testing to do with the smarty when I'm done with it, but I hope it is worth it as well.

Hey Jacobb @dieselautopower I was wondering what you guys set 100HP injectors to back in 2013? I know back when I first installed these they were quite smoke free. I'm wondering if they were set to 300 (I think that is what the sticker on the bag said)

Also I read back in here that you adjust the pop pressure based on the size of the injector?

typically 300-310BAR.  We do raise the pressure slightly when they get bigger.  300HP we set for 315.

  On 9/14/2018 at 1:56 PM, dieselautopower said:

typically 300-310BAR.  We do raise the pressure slightly when they get bigger.  300HP we set for 315.

 

I have a question, Would you guys be willing to pop and flow test my injectors, then reset them to 320bar, and then flow test them again. I'm really wondering what the loss in fuel for would be. 

Less than 3% by going from standard to 330 bar if you look at the idle fueling command.

  On 9/16/2018 at 7:57 PM, pepsi71ocean said:

 

I have a question, Would you guys be willing to pop and flow test my injectors, then reset them to 320bar, and then flow test them again. I'm really wondering what the loss in fuel for would be. 

 

How many miles are on the injectors/nozzles?  To test/ re-pop a set of our injectors we charge $110 shipped  to USA.

  On 9/17/2018 at 4:56 PM, dieselautopower said:

 

How many miles are on the injectors/nozzles?  To test/ re-pop a set of our injectors we charge $110 shipped  to USA.

 

Approx 33,000 miles. These 100s burned clean when I first got them from you guys, buy that was back in 2013/2014 ish. 

 

Question, if they were flow tested, will they still be the same flow test when popped across the board. 

 

I'll most likely give you a call tomorrow and ship these out to you guys. 

flow should not change.  Pop pressures can settle as the springs wear in.  

  On 9/20/2018 at 8:50 PM, dieselautopower said:

flow should not change.  Pop pressures can settle as the springs wear in.  

Jacobb, I shipped them out today, the post office said Monday for arrival. I wanted to know what the pop pressure is current then after, so I can compare. And if there's a way to overnight then back to have them by Thursday then that would be great. 

Got some interesting info. When I bought the injectors I initially had them set to 340 bar. after getting what in my opinion I thought was enough information to make a choice on good Pop pressure I decided I was going to pull mine and repop to 315 bar. My VP was on its way out so I pulled the injectors while I waited a month and a half for a pump from XDP (long story, highly recommend not buying a pump or anything from XDP for that matter) I sent them in and just got them back. They had all settled around forty bar all the way down to 300 bar. There was also one nozzle needing replaced.

very interesting.

Having your injectors popped below 310 bar is a waste. So far everyone that has had re-popped injectors all showed a fairly good drop in pop pressure. @Dodgeih being the biggest drop.

  On 12/22/2018 at 9:29 PM, Dodgeih said:

When I bought the injectors I initially had them set to 340 bar.

Who did you buy them from. How many miles, years were they on. Something ain't right here imo. Just don’t know what yet.

  On 12/23/2018 at 5:11 AM, Dieselfuture said:

Who did you buy them from. How many miles, years were they on. Something ain't right here imo. Just don’t know what yet.

 

I second this! A 40 bar drop is even more then my 20 bar drop over 33,000 miles.

Did we do the initial setting of pressure?

 

We use a digital gauge that gives very accurate max pop off pressure.

I thought I would post this here. Yes it was 45 out when i shot the video, but that morning when i got there it was in the low to mid 30's and the block was still cold.