Jump to content

Superchips Flashpaq 2815 On My 2500hd

PaulMitchell09

Recommended Posts

PaulMitchell09 Enthusiast

PaulMitchell09

Posted
Posted

I have a 02' Silverado 2500hd with a 6.0l and of course it drinks gas like i drink water (And thats alot of drinking) I'm getting somewhere around 11.5 mpg highway. And before i put the Spectre cold air intake and Tornado it was getting around 10-10.5mpg highway.

 

So i just bought a Superchips Flashpaq 2815 off craigslist for $240, And the guy just recently did all the updates and whatnot, So it also has the Mileage XS tune, Should i switch it to that to see the most mpg improvement? Or should i just put it on 87 octane tune? Or leave it on Performance tune with the 91 octane fuel?

 

And i would appreciate if someone has a nice setup that will also give me more mpg's. Should i put exhaust? If you got any ideas let me know.

 

 

 

 

Thanks in advance,

post-68141-1255635698_thumb.jpg

post-68141-1255635698_thumb.jpg

post-68141-1255635698_thumb.jpg

post-68141-1255635698_thumb.jpg

tomasg921 Enthusiast

tomasg921

Posted
Posted

loose the tornado, its a scam and probably restricts air flow on your intake

 

in reply to your question, 87 octane or mileage xs tune will do what you want... it varies upon vehicle and the way its driven

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

Agreed, loose the tornado... and install the mileage tune. I have a friend that got good results with it. Something else you could try is Synthetic trans fluid. I did in my last truck and it was worth a solid 1-2 mpg better. I used Royal purple and it worked awesome for me :( Better mileage wasn't the only benefit. The trans ran 15-20 degrees cooler too. I never saw it above 185 and that was while towing.

 

Also, what exhaust are you running?

PaulMitchell09 Enthusiast

PaulMitchell09

Posted
  • Author
Posted

Hmm so Tornado is no good?

 

 

 

 

loose the tornado, its a scam and probably restricts air flow on your intake

 

in reply to your question, 87 octane or mileage xs tune will do what you want... it varies upon vehicle and the way its driven

PaulMitchell09 Enthusiast

PaulMitchell09

Posted
  • Author
Posted

Okay what does a mileage tune cost? And its got 183,xxx miles.

 

 

 

Agreed, loose the tornado... and install the mileage tune. I have a friend that got good results with it. Something else you could try is Synthetic trans fluid. I did in my last truck and it was worth a solid 1-2 mpg better. I used Royal purple and it worked awesome for me :cheers: Better mileage wasn't the only benefit. The trans ran 15-20 degrees cooler too. I never saw it above 185 and that was while towing.

 

Also, what exhaust are you running?

Draenor Senior Enthusiast

Draenor

Posted
Posted
Okay what does a mileage tune cost? And its got 183,xxx miles.

 

 

Also, what exhaust are you running?

Custom tunes run about 300-400. With those miles, have you done a tune up? Plugs,wires,etc?
PaulMitchell09 Enthusiast

PaulMitchell09

Posted
  • Author
Posted

Well i just changed the plugs and wires around 2 weeks ago, The same time i put the cold air intake filter

 

 

Okay what does a mileage tune cost? And its got 183,xxx miles.

 

 

Also, what exhaust are you running?

Custom tunes run about 300-400. With those miles, have you done a tune up? Plugs,wires,etc?

 

  • 3 weeks later...
KENNHON Enthusiast

KENNHON

Posted
Posted
Well i just changed the plugs and wires around 2 weeks ago, The same time i put the cold air intake filter

 

 

Okay what does a mileage tune cost? And its got 183,xxx miles.

 

 

Also, what exhaust are you running?

Custom tunes run about 300-400. With those miles, have you done a tune up? Plugs,wires,etc?

 

 

 

Black Bear only costs 260[including getting your old computer back]

What I'd like to know is this "Fitch catalyst system" worth 245 bucks? there are testimonies[how much is true?] that said that on a '96 454 cc dually, they got 2 MPG more[ i get 14 mpg/hiway-70mph... anybody know, or use this???

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,760
    Total Members
    8,960
    Most Online
    MASONV88888888
    Newest Member
    MASONV88888888
    Joined

  • Who's Online   1 Member, 0 Anonymous, 1,671 Guests (See full list)

  • Latest Articles

  • Posts

    • Coastie05
      Replacing 2.7L on 2021 Silverado with 2023 2.7L

      By Coastie05 · Posted

      I’m definitely interested to hear the end result here. 
    • MASONV88888888
      Another 6.2L engine failure!

      By MASONV88888888 · Posted

      My 2025 Silverado 1500 had to receive a brand-new engine (long block) under warranty last month at only around 16,500 miles. Before the replacement, the truck repeatedly displayed "Engine Oil Level Low" warnings, even though the Oil Life Monitor still showed around 50% remaining after about 6,000 miles since my last oil change. After seeing the warning several times, I checked the dipstick with the engine cold, and the oil level was completely normal. The next day, the message escalated to "Add Engine Oil." At first, I assumed it was just a faulty oil level sensor, so I brought the truck to the dealership. After inspecting the engine, they found internal cylinder wall scoring and ultimately replaced the entire long block under warranty. Before this happened, I was planning to install a 4-inch lift and suspension upgrade on my truck. After needing a new engine at just 16,500 miles, I honestly don't see the point anymore. I also contacted GM to ask whether my vehicle qualified for a buyback, but I was informed that it does not at this time. Anyway, this experience has left me with serious concerns about the long-term reliability of this engine. I sincerely hope NHTSA expands the current investigation or recall to include 2025 model and performs a thorough inspection of affected vehicles. My biggest concern is that these engines may fail shortly after the powertrain warranty expires. If GM truly stands behind this engine, then at the very least, please consider extending the powertrain warranty to 10 years for affected owners. That would go a long way toward restoring customer confidence.
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      Without exception but then I'm the odd duck, right? I know what goes into that test, how it is calculated and thus how to beat it. But EPA values are often not beaten by the general public and the government has in past years adjusted the means and methods to come to those values to more closely approximate "Joe Average".    The only real trick to beating that EPA average is don't drive like "Joe Average".    It's the same method you used to profit from "Economic Migration" and in doing so beat the 'stats'. But you, like me, are not "Joe Average".     The thing you don't seem to grasp is this "Purchasing Power Index" isn't forward looking. It doesn't predict what it going to be but looks backward and states what it was. They are not telling us what the THINK, they are telling us what they MEASURED. Example:    Wife says "I'm going to lose 40 pounds by Christmas". May she does, maybe she doesn't but the doctors office who weighed her when she made that statement and again at Christmas only REPORTS what the RESULT was. You and I can banter about what was possible and what aunt Tilly did till the cows come home but the result is the result. Arguing otherwise is.....irrational. That's all I'm saying. This isn't about:      What you are calling a 'Statistic' is a RESULT not a CALCUATION and as a result the RULE. Like gravity as a rule, it can not be broken. 
    • MASONV88888888
      Rattle in the rear!

      By MASONV88888888 · Posted

      Just wanted to say thank you for posting this. Years later, your thread is still helping Silverado owners.   I bought my 2025 Silverado 1500 in January 2025, and I've had what feels like the exact same rattle since day one. After reading your findings, I believe my truck has the same issue with the cable carrier contacting the rear sliding window. To be honest, I had pretty much given up on pursuing the issue. It wasn't until I recently drove another brand's pickup that I realized just how quiet their cabin was—and how noisy mine has been all along. On my truck, the rattle happens on almost any paved road, gets even worse on rougher pavement, and I can even hear it during braking and acceleration.   I actually referenced your thread when submitting my case to GM, hoping they'll recognize this as a recurring issue instead of treating it as an isolated incident. The reason I reached out to GM first is because my dealership told me they would need to keep the truck for at least two days just to diagnose the problem. I was concerned that even after two days, they still might not be able to identify the source of the rattle before giving the truck back to me. I had also asked a few dealerships about this issue during previous service visits, but none of them seemed to know what was causing it or had a solution. That's why I decided to contact GM directly first, hoping they might already have an official repair procedure or guidance for this issue.   I also hope GM eventually comes up with an official fix for this problem. I have a feeling there are many Silverado owners experiencing the same rattle, but most either choose to live with it or simply don't know what the cause is.   Really appreciate you taking the time to document your diagnosis. Your post is still making a difference years later.
    • Buckwild27
      Gas Prices

      By Buckwild27 · Posted

      I have 2 choices. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...