Is there any reason to get this, even after Ive been tuned?

 

Id go with no, as far as I know the sensors that came with GMS1 wont even give me any advantage with an aftermarket tune. So skipping that cost means you didnt get hosed! :P

 

That's good to know! Lol

 

Definitely not.

 

I was told it is neccesary to push over 25psi..

 

No. GMS1 is not beneficial. Unless you want to have two tunes where one has GMS1 and the other is a custom one.

The only thing you could do is take the 3 bar MAP sensors and go find your tuner. Have him tune you for 3 bar MAP sensors. No real benefit to that either unless you pushing 30 psi. I think the 3 bar MAP sensors allow you to read above 25psi correctly.

 

I think it is 24.7psi it reads up too and I know when some people up their turbo grade they are above 25.. zzp sells it for a extra 130 bucks when you buy a tune.

 

You can buy the 3bar sensors for $18 each and the adapter cables for $103. That's all you need to read over 22 psi.

 

Dont wanna jack the thread OP , but question. I have GMS1 and did so because of warranty. Now I don't care, can I get triffecta on top of GMS1 and it would be beneficial? or would it screw something up?

 

There's no putting anything "on top" of the GMS1 tune. If you buy Trifecta, it will be a complete write-over of your car's operating system with proprietary Trifecta software. The "stealth" tune will allow you to choose between two different "tunes." Vince can supply you with one that is basically an exact duplicate of the GMS1 tune for one of those tunes and then you can use the other for a higher boost tune.

 

That's exactly what I was looking for. Thank you!

 

No problem. If you want to have your warranty, then stick with the GMS1.