Had some good luck in the last 3 weeks and I suddenly have money for a Quad and I have a few questions.

   I have a fuel pressure gauge in the truck already so is there any real reason to get the fuel pressure sender for the Quad? 

  I have RV275 injectors and a stock HY35 with a spring on the waste gate and make about 28 psi max.

  Trans has a stock rebuild on it done about 25,000 miles ago.

  I'm not looking to make 500 hp or anything I just want 275-300 hp. 

  The most important thing right now is fuel mileage. I'm getting 12.5-12.75 right now.

  Is there a tune on here that anyone would recommend for my combo?

  Is there anything I need to do before installing the Quad?

  Can I just put the Quad in without hooking it up to a computer or does that have to be done before use?

  I do not plan on the wire tap at this time. If i do it in the future i will use a Stealth Plate.

  Thanks for any help and please feel free to give me any advice that may be helpful in getting this thing up and running.

  

Edited December 1, 20195 yr by Gregturley

Didn't know that thank you

yeah no problem

 

Tried tapping the throttle today after i turned the key off. That's so much easier than opening the menu and turning the timer off and on. Wish i knew that sooner.

glad i could help and yes it is  so much easier

I normally sert my EGT cool down to temperature and then set it for 350*F. This will shut off normally with city driving. Then if you highway then there is a few second delay but it will cool down and shutoff on its own.  

I have mine set at 300. Doesn't run long after key is off and the only time its a problem is in a drive thru. Tap the throttle killing it works great now that i know about it.

350*F will shut off instantly in a drive thru condition. 

Is it normal for the boost gauge on the Quad to read lower than a mechanical boost gauge? Quad shows about half what my Autometer gauge shows. 

No, that's not right. You might want to check inside the quad to make sure the map sensor jumper is right for your year of truck. There's instructions floating around here on how to do that, and it might even be included in the installation manual.

I'll check that at lunch thanks

Jumper is in the right spot. Guess it might be time for a MAP sensor.

I have read of others with this issue. Not sure your sensor is bad. @Me78569 this is not uncommon is it? I cant remember what I have read about this.

Maybe try the wrong spot?

Guessing a map sensor.  that is the common issue.

Well, never mind. 

Definitely a common part to fail. I've had two fail in probably 30,000 km or less. The first one that failed just wouldn't output anything, was always zero PSI. The second one also shorted the 5v supply and I lost my oil pressure reading. Cheap crap... I have no idea on what brands they were. 

My first lasted 215k, the second about 225, third one about 30k. On my fourth one who knows how long it will last.

Shopping for a Cummins sensor this evening. Best price I've found is about $90. Have a buddy that works for Cummins so I'll hit him up tomorrow.

Finally broke 13 mpg. Got 13.308 on the last tank. Surprised me because there were a few days of 85-90mph interstate runs in there and 3 days of 15 minute warm-up.

Long time ago I was fighting a Edge Comp problem. I replaced the MAP sensor and didn't fix the problem. To this day I still got both MAP sensors and both still working as designed. 

 

10 hours ago, Gregturley said:

Finally broke 13 mpg. Got 13.308 on the last tank. Surprised me because there were a few days of 85-90mph interstate runs in there and 3 days of 15 minute warm-up.

 

Still even those days I can still bat out 18 MPG but I'm limited to 80 MPH with my tire and gear ratio which lands at 2,500 RPMs.

 

I'm still baffled at just a mere 13 MPG. That what I get dragging my 8,000 pound RV that is 31 foot long. That just gives you an idea of the amount of drag you are fighting.

@Mopar1973Man i don't get it. Truck has no dragging brakes or anything. Drop it in neutral and it will roll easily. Not lifted, 265/75/16 tires 3.54 gear. Overdrive and lock up work. Usually drive 70mph max on interstate.