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19-20 1500 5.3-6.2 Tuning

Ali Abdulrahim
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Casey Nelson Enthusiast

Casey Nelson

Posted
Posted
On 10/12/2020 at 4:17 PM, Nick2019AT4 said:

Ali, good luck with tuning your GMC, I've been waiting forever, bought 2019 GMC AT4 6.2 L 10 Speed last March, put K&N Cold Air Induction, ordered it with GMs Borla Exhaust, had it Dynoed 360HP, 384 TQ, Waiting for tune, they tell me GMC has computers locked up on there trucks. This truck is pretty quick with just this, 1/8 mile 9.23, actually beat a friend of mines 2018 Ford Raptor till he got a tune. 

DSCN0180.JPG

Nice truck! So it seems like you saw pretty good improvement with the kn intake over the gm performance package one? Any check engine lights or issues?

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CamGTP
CamGTP

Those numbers are about avg anyway when most consider that drive train loss is ~15%. Your numbers are 15-17% when compared to crank numbers.   If someone gains 40whp from a tune I will eat m

Black02Silverado
Black02Silverado

From what  I can tell the Corvette and such are getting tuned at a lower cost but the truck line still is a major pain.  Is this correct?   Not sure what is up with GM and their marketing de

Nick2019AT4
Nick2019AT4

Jac365, nope, I ordered this truck in the summer of 2018, as far as the engine, the 5.3 which I had 4 Silverados with that engine, the 6.2 is by far a better chose. More power, better mpg, and it make

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Nick2019AT4 Enthusiast

Nick2019AT4

Posted
Posted

Casey, The so-called PERFORMANCE COLD AIR INTAKE GM sells is garbage, made about 2 hp 1tq, DYNOED, K&N made 16hp 14tq, big difference, and no, to your question of ck engine light. I've been putting K&N Cold Air Intakes on my trucks for a long time and Dynoing them, they make good power and no issues.

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TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted
29 minutes ago, Nick2019AT4 said:

Casey, The so-called PERFORMANCE COLD AIR INTAKE GM sells is garbage, made about 2 hp 1tq, DYNOED, K&N made 16hp 14tq, big difference, and no, to your question of ck engine light. I've been putting K&N Cold Air Intakes on my trucks for a long time and Dynoing them, they make good power and no issues.

Nice numbers. You should show this to some “non-believers” on this site that state CAI and exhaust don’t improve performance. So little do they know. 
When I added my Corsa exhaust and S&B CAI, I noticed a big difference in acceleration and throttle response. 

Happy Thanksgiving and take care. 

  • Like 1
Nick2019AT4 Enthusiast

Nick2019AT4

Posted
Posted

Casey. Most of these people talk a lot of crap, and most don't spend the money to DYNO these products before and after, I have, and Have the DYNO SHEETS to prove it, that's the only way to really know if they are adding power. I also had the BORLA Exhaust put on thru the dealer, got a hold of BORLA and they told me they make the exhaust for GM and it puts out about 15 hp, I didn't DYNO that because I ordered the truck with it. But my real #s were 360 hp 384tq at the wheels, would like 400 hp 400 tq, if they ever come out with a tune. The truck is quick for having a 3.23 rear end, beats Dodge, with there 3.90 rear end and Ford with there 4.10 rear end, Toyota Tundra has a 4.30 rear end and can't come close to this truck, the DYNO and DRAGSTRIP proves a lot.

Nick2019AT4 Enthusiast

Nick2019AT4

Posted
Posted

Trevor, Your 100% right, Exhaust and Cold Air Induction makes a big difference, I gained around 31 hp and about 28 tq by doing that on my truck.

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Those numbers are about avg anyway when most consider that drive train loss is ~15%. Your numbers are 15-17% when compared to crank numbers.

 

If someone gains 40whp from a tune I will eat my shorts. I can't even gain that kinda of power on my L83 5.3 on E85 and I've been tuning with HP Tuners for years. Under the curve gains are where we feel the most, if it picks up 15-20hp from 2000-4000rpm, you should notice it.

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lt1z Enthusiast

lt1z

Posted
Posted

You guys dynoing with stock tuning in the wrong gear to avoid the limiter are not getting the best data. Then again we are talking about CAI and exhaust here.

I spend most of my day everyday on the dyno tuning cars/trucks so Im pretty well versed in this stuff. The L87 ( I own one) does not dyno or respond to mods any differently then an L86. There are just some slight variances in driveline loss between the A6, A8 and A10 offered over the years.

I have not bothered with tuning mine yet due to the cost. I will be doing so when I install a 2650 in early 21.

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Trucks will far exceed the speed limiter if you tried to dyno in the correct gear. The 6 speeds is like 4th gear and the 10 speeds is like 6th gear. Even if the speed limiter was gone you still have the driveshaft to worry about.

 

Like the post above said when you have to dyno in gears 2 or 3, maybe even 4th the data isn't as accurate.

  • Like 1
lt1z Enthusiast

lt1z

Posted
Posted
Trucks will far exceed the speed limiter if you tried to dyno in the correct gear. The 6 speeds is like 4th gear and the 10 speeds is like 6th gear. Even if the speed limiter was gone you still have the driveshaft to worry about.
 
Like the post above said when you have to dyno in gears 2 or 3, maybe even 4th the data isn't as accurate.

Yes I am aware of where the 1:1 gears are in A8/10 and do not use those but the guys running these in 3rd gear to avoid exceeding 100 mph are not getting the most accurate numbers. The stock driveshafts generally hold to 120 if the angle are not bad from lifting or lowering the wrong way.

The guys who have trucks with a 112 limiter can get away with 4th on the A10
  • 8 months later...
  • 2 weeks later...
Dallas Kiezik Enthusiast

Dallas Kiezik

Posted
Posted

Has anyone taken the plunge and got a Holley tuning product installed, looking for feedback, on the edge, predator or flaspaq, 35hp 35ftlbs under the curve and peak 16hp and 20ftlbs with a smother idle and tip in sounds decent to me. 

  • 3 weeks later...
clowe1243 Enthusiast

clowe1243

Posted
Posted

I am waiting for someone to bite the bullet and do the L87 with Diablo, SC, Holly as well.  Else I might be the one during Xmas time.

TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted

I’m waiting on the refresh from GM. Still hoping for a supercharged truck. Crossing my fingers. If not might have to go this route and tune it with Diablo. 

TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted

I’m waiting on the refresh from GM. Still hoping for a supercharged truck. Crossing my fingers. If not might have to go this route and tune it with Diablo. 

Transient Senior Enthusiast

Transient

Posted
Posted
4 hours ago, TNTSilverado said:

I’m waiting on the refresh from GM. Still hoping for a supercharged truck. Crossing my fingers. If not might have to go this route and tune it with Diablo. 

No supercharged truck coming from GM.  I'll Venmo you $5 if I'm wrong.  We'll find out next week on the 9th.

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