When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a 2007 yukon with a 5.3 it has btr stage 2 truck cam, ls7 lifters, cold air intake, tbss intake, 86mm throttle body, flex fuel injectors, stock manifolds and cats but performance muffler. It runs and drives but you can hardly hear the chop of the cam and it is a turd until 3k rpm. When I put gas in it if I shut it off I have to hold the accelerator down for it to crank. Does anyone have a tune for hp tuner that I may be able to use that corrects some of the problems. Thank you in advance!
You've put enough parts/time/$$ in here,, you'd be money and pain ahead to
find a tuner, get the rig to them and get it done right.
Random tunes off the internet are not worth the risk..
Your build doesn't sound over the top exotic.
Any good LS shop should be able to set you up.
Buy once cry once..
of course its a turd to 3k rpm. That's probably about when it starts primarily using the MAF sensor for fueling calculations. Below that it'll be the VE tables and of course they're completely wrong since you aren't running the stock cam.
morally of the story? you spent lots of money on parts. You can afford another $200-$400 for a tune. at the very, very least, get a mail order tune from somebody reputable like frost https://www.tunedbyfrost.com/
Just guessing but that thing probably needs 20-25% fuel whacked out of it below 2K, and on the other side of the coil it's dead *** lean up towards the top. Get it tuned before you hurt it.
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.
7 Most Reliable High-Performance Engines GM Has Ever Built
Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.
Can anyone give me some help? 
