Quadzilla V2 reading inconsistent boost under load on 1999 24V.

[Me78569]

boost fooling is always happening regardless of level

[Quadzilla Power]

@DKfummins Me78569 is right, by being on power level 0 the Adrenaline is still apart of the equation as it is boost fooling. When we tested the board, I bench tested it to see if the boost fooler circuit was functioning and changing the input voltage correctly. However, I also threw it on a truck to see if boost levels were reading consistently, and they were. I am at a loss as well as to what it could be, and am leaning towards the ECM providing a false output. 

[DKfummins]

Any recommendations on where the ECU can get sent to be tested, and possibly repaired ? 

[Mopar1973Man]

Here is our list...

 

[DKfummins]

well here's an update, 

 

I sent the ECU of to Auto computer Specialist, I finally got it back , installed it, did a reset on the APP, the issue is still there and it almost seems like its worse then before. 

 

They did claim they fixed the ECU but I'm almost doubting that anything was wrong with it. 

 

from ( Auto computer Specialist )

(Our findings: You unit came in, with no 5 volt on pin 3, wait to start circuit was delayed.  Flash chip replaced, 6 capacitors, APP pedal, lift pump circuit. all was replaced and repaired as well as your pins & CPU were reflowed, Flashed with latest updates.)

 

i went and looked to see what pin 3 is on the ecu and if im not mistaken its a shield return from the vp44 for the data link wires, which doesn't make sense to me on why there would be a 5 volt there. Yes they may have replaced items but it almost seems like there was nothing wrong with it to begin with. 

 

I did some data logging and will attach the logs with the ecu after the update. IM really at a loss now. Any other ideas on what to look for or where to start would definitely be appreciated !!

 

I think ill try unhooking the Quad and see how it runs, its very underpowered with out the quad but im hoping to see if i feel the jerking under heavy load 

 

I went out and drove the truck with the quad unplugged completely, the truck drove smooth with no jerking, the only thing was slow throttle response and it was slow and sluggish over all, i Imagine its back in the 200 Hp range without the Quad and that's why it is the way it is. 

 

Is there a wiring diagram for the quad wiring for the boost wiring, id like to check and make sure that they're were they need to be. 

 

 

 

 

iQuad-2019-06-10-20.15.24.csv

Edited June 11, 2019 by DKfummins

[Nate1r2]

On 6/10/2019 at 8:45 PM, DKfummins said:

well here's an update, 

 

I sent the ECU of to Auto computer Specialist, I finally got it back , installed it, did a reset on the APP, the issue is still there and it almost seems like its worse then before. 

 

They did claim they fixed the ECU but I'm almost doubting that anything was wrong with it. 

 

from ( Auto computer Specialist )

(Our findings: You unit came in, with no 5 volt on pin 3, wait to start circuit was delayed.  Flash chip replaced, 6 capacitors, APP pedal, lift pump circuit. all was replaced and repaired as well as your pins & CPU were reflowed, Flashed with latest updates.)

 

i went and looked to see what pin 3 is on the ecu and if im not mistaken its a shield return from the vp44 for the data link wires, which doesn't make sense to me on why there would be a 5 volt there. Yes they may have replaced items but it almost seems like there was nothing wrong with it to begin with. 

 

I did some data logging and will attach the logs with the ecu after the update. IM really at a loss now. Any other ideas on what to look for or where to start would definitely be appreciated !!

 

I think ill try unhooking the Quad and see how it runs, its very underpowered with out the quad but im hoping to see if i feel the jerking under heavy load 

 

I went out and drove the truck with the quad unplugged completely, the truck drove smooth with no jerking, the only thing was slow throttle response and it was slow and sluggish over all, i Imagine its back in the 200 Hp range without the Quad and that's why it is the way it is. 

 

Is there a wiring diagram for the quad wiring for the boost wiring, id like to check and make sure that they're were they need to be. 

 

 

 

 

iQuad-2019-06-10-20.15.24.csv 1.56 MB · 0 downloads

Ever solve this issue?

[Mopar1973Man]

@DKfummins I'll call him out maybe he'll see the email and respond.

 

[99cummins5spd]

On 3/13/2020 at 10:04 AM, Mopar1973Man said:

@DKfummins I'll call him out maybe he'll see the email and respond.

 

Having similar issue in my 99. Just received the iQuad 5/21. Boost reads up to like 10psi then drops to 0 then back to 8psi. Truck jerks like crazy due to the fueling I guess. Just pulled off an edge JWA CTS2 for the quad. Had zero issues with the edge. Read boost up to 30+. I even put the edge back and it worked perfect. Read boost 30+. So I’m thinking this has to be an issue with the quad... getting a little discouraged. Any advicec

[Mopar1973Man]

Even my Quad shows I can reach 69 PSI of boost but actually I only reach 47 PSI. I don't use the display or mobile device reading. I used my ISSPro EV2 gauges which are dead on.

[Trombly]

I have the EXACT same issue as the OP, contacted quadzilla and they could not resolve the issue.  Any updates?  BTW mine is a 1999 Cummins.  I have a suspicion its got to do with the software quadzilla has.  Its been extrmeelky frustrating.  I reinstalkled my EDGE Juice and have no boost drop out, but as you guys know the EDGE Juice is horrible at smoke control with modified trucks with VP44's.