COP TZR

Agree. That local shop has posted stuff like this for years. It looks the latest graph should be for an overdriven roots blower. Your graph looks realistic and I would trust Davenport. I only post this to confirm I'm not crazy and to read others opinions.

I have a bet in writing with the shop owner. Unfortunately he could not pay for another deal so I have not found the free time or interest to donate to this pissing match. I use other Dyno shops in the area. Unfortunately I had to deal with this shops claims after a mustang club Dyno day they recently held which took me back to their FB page and the b.s. rabbit hole... I posted this on the forum to confirm I'm not crazy thinking the numbers are being scaled down for baseline and scaled up for final. Thank you everyone for the feedback.

Sorry about that. I didn't realize until I went back to confirm any modifications. I posted in the 2014-2018/19 section after that. ^^ here's the link

I posted this in the 2019-up group, but realized this is a "classic" model, so will share here. Same Dyno shop as original post. Here is a 2019, the same Dyno shop has posted this week. Description shows "modified exhaust system" and "oversize over width tires/rims"

If anyone has seen my previous gen thread: Here is a 2019, the same Dyno shop has posted this week. Description shows "modified exhaust system" and "oversize over width tires/rims"

Disappointed it looks like 2015-2019, not 2014-2019. https://gmauthority.com/blog/2022/03/gm-hit-with-class-action-lawsuit-for-peeling-paint-on-chevy-and-gmc-trucks/

Disappointed it looks like 2015-2019, not 2014-2019. https://gmauthority.com/blog/2022/03/gm-hit-with-class-action-lawsuit-for-peeling-paint-on-chevy-and-gmc-trucks/

https://m.facebook.com/story.php?story_fbid=4035387786493610&id=994363517262734&m_entstream_source=video_home&player_suborigin=entry_point&player_format=permalink&anchor_composer=false

from a different shop using hub dyno

I have been blocked from viewing all of those posts and blocked from commenting on any post. The shop has held firm on their statements. May need to stop by like they offered to witness in person. Thanks everybody for the replies and input. Was considering this tuner, quoted $800-$1000 last year for customers vehicle. Going to continue shopping around.

That was yesterday's news, here's today. Gets better. 2015/Silverado/5.3L 191rwhp up to 328rwhp

Am on phone and no sleep, good catch actually reading the info. What do you think if they were in manual shift mode and upshifted a bunch. Guy says they had pedal to the floor.

Had feeling AFM or speed limiter kicked in 4th gear or something providing a lower base pull peak #.

Local dyno shop posted this... 2016(on dyno sheet)/2017(on FB post) Chevrolet Silverado 5.3L - stock Base pull: 213rwhp/275ft-lb tq Final tune: 319rwhp/378ft-lb tq https://m.facebook.com/InternationalDynoAuthority/ Anyone seen this done before? Is the statement misleading as the base # may be very low for off the lot which makes final number look like a significantly higher gain? Is it normal for a 2016 or 2017 5.3L to only put down 213rwhp at WOT bone stock?

okey dokey, here we go....opened door, dash light up with "Service 4wd", started engine, backed up 10ft, front diff is stuck in full lock, will keep you posted. Update 1: (1/2hr quick check in driveway) Disconnected the negative battery terminal for 10 minutes, removed "4wd trac" fuse, reconnected battery, heard actuator noise, reinstalled fuse, heard actuator noise. Sounded as though the actuator had steady power and removing the fuse turned it off. Checked around top and bottom but was now dark and lots of skid plate underneath. Update 2: (Took truck to dealer) Check and advise for service AWD message - vehicle stuck in 4 low. - Tech cause: scan for codes c0398 in transfer case control module - Tech comments: check for software updates and cancel codes, check range sensor for corrosion, range sensor has crack and is swollen Added operation: transfer case range sensor corroded diag and replace range sensor and set up Tech cause: transfer case range sensor shorted - Tech comments: replace transfer case range sensor and relearn to tccm . as per est. 1.00 - 84377721 - Sensor $194.08 (CDN$) - Tech cause: transfer case range sensor shorted - Tech comments: replace transfer case range sensor and relearn to tccm . as per est. Labour $193.50 (CDN$) Environmental charge $5.00 (CDN$) HST $51.04 (CDN$ - Ontario) Total $443.62 (CDN$)