Magnuson tvs2300 on Avalanche 2007 5.3

[Magpie40]

Hi guys, my name is Michael, can you please help with this:
I own an Avalanche 2007 with 5.3 and just bought Magnuson TVS2300 Kit.
I have I-1000 InTune and would like to ask if you can help me with a custom tune.
Where can i get the custom tune or a test tune just to start the vehicle and then do a fine tune?
Who can help with this?

My Spec is
Magnuson Tvs2300 Kit with HighPerformance injectors (provided with the kit)
LongTube exhaust headers
Stock exhaust without cats

Thanks in advance

Regards,
Michael

[06MonteSS]

that setup will need to be taken to a shop to get tuned on a dyno.. you can search for a list of diablo CMR tuners in your area here: https://www.diablosport.com/dealer-locator/ - and filter the results by GM CMR TUNER