C4500 Tow Truck with EFI Live and DSP5 Switch (OFFICIAL VIDEO)

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2005 Chevy C4500 4x4 Tow Truck just came through the shop for custom Longhorn Fab Shop EFI Live tuning and a DSP5 Switch. With some custom modifications to allow for it (ECU connectors are not the same as a light duty truck so please do not attempt this on your own!), the truck rolled out with some one-of-a kind tuning! The only roll back we know of that's sporting RACE - STOCK - TOWING WITH TURBO BRAKE - TOWING/MILEAGE - 2000 RPM HIGH IDLE. It is all business with a little bit of play!

Normally these trucks come with a high idle, this truck had its cruise control completely dismantled (which is how you would normally engage the high idle) so we opted to tune it in with EFI Live with the added benefits of 4 other tunes. This allowed the driver better use of the hydraulics used on this truck and quicker vehicle recoveries. Also, the race tune allows him to enter the highway from the shoulder at a much higher speed to decrease the danger to him and other drivers. An underpowered vehicle is just as dangerous as a vehicle that cannot brake.

Custom EFI Live tuning by Longhorn Fab Shop.
Call or email anytime, see site for details
www.LonghornFabShop.com

Category:

Autos & Vehicles

Tags:

• LonghornFabShop
• EFI
• Live
• Longhorn
• Fab
• Shop
• DSP5
• towing
• tow
• roll
• back
• 4x4
• high
• idle
• chevrolet
• gmc
• allison
• elevated
• duramax
• c4500
• kodiak
• lights
• sirens
• Duramax V8 Engine
• Tow Truck
• GMC (automobile)
• truck

[zachmley46]

What's up with the sick turbo whistle?

[LonghornFabShop]

@zachmley46 The original turbo was destroyed when the owner before this one left the filter off "because it ran better". It has an industrial injection turbo on it now and spools super fast! This truck is awesome especially with the four wheel drive. Thanks for watching, they'll be more videos to come!

[joeyf504327]

@LonghornFabShop wow what idiot leaves the filter off for "more power" that is the dumbest thing i have ever heard

[LonghornFabShop]

@joeyf504327 That is a great question! Believe it or not...the recommendation to leave the filter off was given and done by another shop. You'd be surprised at what we see!!!!

[HUArmyLife]

sick as hell you guys do good work

[LonghornFabShop]

@HUArmyLife Thanks!

[mulletmasher]

So I have to ask, how fast does this thing get up and go now? haha! Any 4WD launches?

[LonghornFabShop]

I know this question will get asked, normally these trucks come with a high idle, this truck had its cruise control completely dismantled so we opted to tune it in with EFI Live with the added benefits of 4 other tunes. This allowed the driver better use of the hydraulics used on this truck.