Reviewed By edgar l (Clifton, CO) Reviewed for a 2004 GMC Sierra —4/11/2016 6:54 PM
Decent tuner, i like that you can adjust parameters such as spark, fuel, shift pressure etc.
Reviewed By Donald S (TECUMSEH, OK) Reviewed for a 2005 GMC Sierra —2/13/2016 7:22 AM
Tuner has very good tunes an abLe to upload custom tunes via download or micro chip. Can't beat this tuner the Trinity customer service SUCKS!! I emailed them asking how to make the tuner to power down once the ignition is turned off after 4 days I got a response from them, all they said is to unplug it from the ECM port. When i mentioned wanted to use the gagues feature while driving the CS Rep came back with "sent it back where u bought it an get a refund then". That isn't cool at all.
Reviewed By oscar a (Norfolk, NE) Reviewed for a 2005 GMC Yukon —5/4/2012 7:05 AM
So I bought this tuner not knowing anything bout it. I was worried I might not know how to properly install tunes and mesure paeameters. Well after a while of research I found out how to installl tunes I tried the 87 octane tune. Right away I felt a huge difference my truck was awake my acceleration was different more responsive. So then I did more reseach found a guy by the name of lew or diablew tunes predator gives u the option to install custom tunes and diablo.com gives u the information you need to find people that can make a custom tune for ur car/truck. I found lew won't go into much detail but he tuned my truck with balls. There is so much thing u can do with this tuner if u have mods on ur truck a custom tune is for you. Or even stock vehicles can enjoy this great product.