First off: congratulations to GTM for continually giving us great new options. I do have some questions though.

EDIT: My questions were answered after I figured out that I misread the graph, which is comparing two different STG 1.5 setups. GTM, it's easier for us speed readers if you call it STG 1.5, rather than STG 1 with upgrade.

Again, congrats on the achievement!

^ the red line is the stage1 with the upgrade (1.5) on 91 oct and the blue is the same with 93 oct and a smaller pulley.

It would be cool to see the dyno for stage 1 and then the stage 1 upgrade on the same car and the difference.

Indeed. I went back and noticed I had misread. I thought that the red line was stage 1 and I was thinking, that's way off. Thanks :tiphat:

I had to reread it too. I thought the same as you at first glance.

Has anyone on the forum here done this upgrade? I want to do this so bad.

I get my kit next week:tup:

^ yep I saw that.. congrats man. But honestly was wondering who currently has the stage1 installed (like me) and have gone thru the upgrade. just a curious bastard thats all.. :)

It's going to cost allot b/c stage 1.5 is stage 2 with the stage 1 blower so everything that stage 2 has that you don't,I guess you could leave some parts off the list to avoid a high bill.

?? unless I'm reading it wrong, its like ~1300 for the upgrade, a little more for the bigger injectors and fuel pump voltage stabilizer.. That's not a bad price for an additional 100whp for the stage1 guys.

I'm in for the results on this upgrade... I am definitely interested in doing it, if you really get 100 whp, the price is a good deal. Does anyone have any idea approximately how much labor it is to install?

To Baer383... This kit will make the Stage 1 even "sneakier"

GTM said directly they're going to charge 8 hours. Remember though, they know the kit from the inside out, so it could be more like 10+ hours for a master tech looking at the supercharger for the first time.

:roflpuke2:

It's only +100whp if you assume the stage 1 is limited to 400whp, which it isn't.

On this kit most people have been seeing 390 - 420whp, so it's still at least 80whp depending on the Dyno you're using.

Either way, a solid 50-80whp for around $1,500 is a pretty good deal for those with the stage 1 SC from GTM.