Jump to content

Tuned and Converted to Flex Fuel (2015 Silverado 5.3L)

Rawyzf
 Share

Recommended Posts

Rawyzf Senior Enthusiast

Rawyzf

Posted
Posted (edited)

I'm not even sure where to start with this post, but here goes.

 

Last week I ordered the Flex Fuel Sensor and fuel lines/hose/clips for the conversion and then dropped the truck off at the Tuner.

 

Today I picked up my truck from the Tuner. He installed everything and then tuned the truck on 91 Oct and then on E85. I normally run 91 Oct, so that is what he took the Baseline with and then started with that tune. Once he completed that tune and the tank was low, he filled it with E85 and tuned for that.

 

I have to say, my truck is a whole new beast, completely amazing. Shifts so much better, new power, etc. This is my 3rd vehicle I have had him tune, all have been excellent.

 

I'll attach the dyno chart below with 91 Baseline, 91 Oct Tune, E85 Tune.

 

HP gains on 91 Oct Tune: 30.6

TQ gains on 91 Oct Tune: 33.8

 

HP gains on E85 Tune: 57.7

TQ gains on E85 Tune: 70.7

 

I have so much more to say, but don't have time right now. Just wanted to share, as I am super excited!

 

Tuner Information:

Carl Thomas

Lancer Service

St. Paul, MN

 

post-141133-144807963753_thumb.jpg

 

 

 

 

Sent from Tapatalk App - Samsung S6

post-141133-144807963753_thumb.jpg

post-141133-144807963753_thumb.jpg

post-141133-144807963753_thumb.jpg

Edited by Rawyzf
  • Like 6
  • Replies 161
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Rawyzf
Rawyzf

I'm not even sure where to start with this post, but here goes.   Last week I ordered the Flex Fuel Sensor and fuel lines/hose/clips for the conversion and then dropped the truck off at the Tuner.

SMiller
SMiller

I could care less if it only gained 5hp, just changing the shift points and torque management make it seem like 100hp gain.

Carl T
Carl T

Here you go, this is a 15 GMC 6.2 L86 A8 w/air intake. I was hoping for a stoker but it was as close as I could get.   Stock- 332/383 Tuned - 353/409 picked up 21whp and 26 ft/lbs over stock Tune

Posted Images

smrr1 Senior Enthusiast

smrr1

Posted
Posted (edited)

Damn. Some nice numbers there. So factory numbers look like a 25% drivetrain loss. That sounds like a lot to me. For some reason i was thinking 15% was more like the norm.

Edited by smrr1
  • Like 2
Rawyzf Senior Enthusiast

Rawyzf

Posted
  • Author
Posted

Damn. Some nice numbers there. So factory numbers look like a 25% drivetrain loss. That sounds like a lot to me. For some reason i was thinking 15% was more like the norm.

My Baseline numbers could be a tad low because of the Airraid MIT installed and not tuned for.

 

Sent from Tapatalk App - Samsung S6

Rawyzf Senior Enthusiast

Rawyzf

Posted
  • Author
Posted

First post updated with Tuners info, in case anyone is interested.

 

Sent from Tapatalk App - Samsung S6

  • Like 1
smrr1 Senior Enthusiast

smrr1

Posted
Posted (edited)

I have been on the fence about tuning my truck but these numbers are so very tempting. Especially since my last 3 trucks were 6.2 and my last 2 cars were srt challenger and mustang gt. The 5.3 feels a little slow compared to those!

 

Also i did a little research involving drivetrain loss. 15% like myself and most everyone i know thinks is wrong. Obviously it varies by vehicle but most vehicles have 20%+ from what i was reading.

 

What is done to the truck besides tune? Is the airaid just a basic CAI?

Edited by smrr1
  • Like 2
SMiller Senior Enthusiast

SMiller

Posted
Posted

I could care less if it only gained 5hp, just changing the shift points and torque management make it seem like 100hp gain.

  • Like 6
Gmcant33 Enthusiast

Gmcant33

Posted
Posted

Never had a tune I'm in it for the long haul would tuning a truck/car get the same reliability and life expectancy as a stock veichule I ask because I want to see my truck in 150k mile range I also had a Silverado with 250k miles and I'm curious if that is possible?

  • Like 2
Rawyzf Senior Enthusiast

Rawyzf

Posted
  • Author
Posted

I have been on the fence about tuning my truck but these numbers are so very tempting. Especially since my last 3 trucks were 6.2 and my last 2 cars were srt challenger and mustang gt. The 5.3 feels a little slow compared to those!

 

Also i did a little research involving drivetrain loss. 15% like myself and most everyone i know thinks is wrong. Obviously it varies by vehicle but most vehicles have 20%+ from what i was reading.

 

What is done to the truck besides tune? Is the airaid just a basic CAI?

Airraid, I just have the tube, still using the stock airbox. Other than that, just a cutback.

 

Sent from Tapatalk App - Samsung S6

Rawyzf Senior Enthusiast

Rawyzf

Posted
  • Author
Posted

Never had a tune I'm in it for the long haul would tuning a truck/car get the same reliability and life expectancy as a stock veichule I ask because I want to see my truck in 150k mile range I also had a Silverado with 250k miles and I'm curious if that is possible?

As long you have a good tuner, you should have nothing to worry about. But, stuff happens, tuned or not.

 

Sent from Tapatalk App - Samsung S6

Damn nice numbers for a tune and E85 conversion.How's the seat of pants feel?

Truck feels fantastic, SOP is happy.

 

Sent from Tapatalk App - Samsung S6

dbcooper748 Enthusiast

dbcooper748

Posted
Posted

As long you have a good tuner, you should have nothing to worry about. But, stuff happens, tuned or not.

Sent from Tapatalk App - Samsung S6

Truck feels fantastic, SOP is happy.

Sent from Tapatalk App - Samsung S6

Did you have to add any hardware? Or did your tuning guy Just plug into the existing ecm and re write from there?
Rawyzf Senior Enthusiast

Rawyzf

Posted
  • Author
Posted

Did you have to add any hardware? Or did your tuning guy Just plug into the existing ecm and re write from there?

For tuning, nothing needs to be added. Just plug into odb2 and modify ecm/tcm with tuning device (hp tuners in my case).

 

Of course if your truck isn't FFV, then you need to add those components. If you just want to tune on Regular gas, nothing needs to be added.

 

Sent from Tapatalk App - Samsung S6

SMiller Senior Enthusiast

SMiller

Posted
Posted

Never had a tune I'm in it for the long haul would tuning a truck/car get the same reliability and life expectancy as a stock veichule I ask because I want to see my truck in 150k mile range I also had a Silverado with 250k miles and I'm curious if that is possible?

A tuned truck will out last a stock one, adding line pressure/firming up the shifts and eliminating the DOD will do wonders.

  • Like 2

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Chuck FB
      Joke Thread

      By Chuck FB · Posted

      This video may not be the exact content for the joke thread but its a lot of laughs so here it is, I've only watched a portion of it so far but if anyone is looking for some light hearted good soap box driving action, its here. As a note in the upper left of the screen it shows the number out of 100 to refer back to any particular vehicle for comment !.    https://www.facebook.com/reel/1351928276956715
    • SFC Retired
      2023 DRW Wheel Liners

      By SFC Retired · Posted

      Did have to make 1 modification because of the WeatherTech rear mud flaps and that was needing 3 longer screws than what came with the install package. 😄
    • SFC Retired
      2023 DRW Wheel Liners

      By SFC Retired · Posted

      Picked up the liners yesterday. Installed passenger side WITHOUT any modifications. All mounting holes lined up perfectly. Rain is interfering today with drivers side. Very Happy! Will add pics when finished
    • KARNUT
      OCI, not when but why?

      By KARNUT · Posted

      As a matter of amusement I’ll leave this conversation with this. Do you beat the government average fuel estimate? Statistics are a guide to me. Not a rule. Someone once said I have to have the last word. If true and possible may be. I’ll blame that on working in a family business.
    • bluev8
      Intermittent no-code issues on 2022.5+ V8 trucks — what did the shop fail to capture?

      By bluev8 · Posted

      That is a fair point, and I agree that trying to log “everything in the truck” would be the wrong direction.   There are a lot of modules and a lot of traffic. If the product became a full-truck datalogger, the amount of data would get huge very quickly, and most owners would never use it.   I think the first useful version would need to be narrow: - powertrain-side event evidence - selected high-value parameters - communication / voltage / reset events - pre/post event window - short report first, raw log only as backup   One distinction I should make is between active OBD/PID polling and passive bus capture. If you are polling PIDs through OBD, then yes: the more parameters you request, the lower the effective sample rate becomes, and you are adding diagnostic traffic to a vehicle that is already busy running itself. With passive CAN capture, the recorder is not asking all the modules for data. It is listening to traffic that is already on the bus. So it does not consume vehicle bus bandwidth in the same way that a scan tool polling hundreds of PIDs would. But your point still applies in a different way.   Even if passive capture does not add bus traffic, the recorder still has limits: - processing rate - storage rate - timestamp accuracy - decoder workload - event filtering - report size - user attention span   So the answer cannot be “log everything and let the user figure it out.” The product would need to store enough raw evidence to be useful, but only decode, graph, and present the important parts around the event.   A practical report should probably show: - what triggered the capture - how much pre/post data was preserved - which selected parameters changed - how those values compared to baseline - whether the same pattern happened before - whether any voltage, reset, bus-off, lost-message, or communication fault occurred - selected graphs around the event - raw data only as supporting evidence   So I agree with you. More data is not automatically better. The real product is the reduction from raw data into a useful event report.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...