so in your opinion which is better? the GMS1 or the Trifecta tune?

 

trifecta. too many problems with the gm tune and you get more imo out of your mods.

 

Trifecta

Its a better running tune then GMS1
Its also a hidden tune
You can datalog and re-tune at a later date if you do modifications.

In my opinion GMS1 was a waste of money in my case, luckily I got the GMS1 kit for $375 plus the install price, so basically what people pay just for the kit by itself.
I still feel GMS1 was a waste of money. The warranty wording/description is some what deceptive for the GMS1 tune.

 

GMPP Turbo Upgrade was not a waste in my case. Not willing to chance the warranty and definitely made the car more lively

 

well what do you think of the superchips cotex tuner? i really want to get the most bang for my buck but i want to to be reliable and get better or the same milage

 

I'm going to add Trifecta to the stg1 I'll let you know.

 

Wait...when did you get that?

 

Where have you been

 

Well was it in the last 2 weeks?

 

Here is the thread: https://www.chevyhhr.net/forums/show...ighlight=stage