Just ordered gmstg1
I had actually understood that the preproduction LNF's would spike to aprox 21psi - which was beyond the BarII map sensors ability - and that this was in fact a part of the reason to "detune" them to 260hp...
Although I am not 100% certain of that source, I have read time and time over that the BarIII is a part of the GMS1 so that the amount of boost can be properly accounted for with the ECM (ect).
Although I am not 100% certain of that source, I have read time and time over that the BarIII is a part of the GMS1 so that the amount of boost can be properly accounted for with the ECM (ect).
Member
Joined: 03-26-09
Posts: 223
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From: MI
Well, I don't know your girlfriend or how she feels about being tossed into seats, so I can't comment on that. But, as with stock, the car will be completely docile unless you tell it not to be. So, how the car treats your girlfriend is completely up to you. I would imagine the extra 60 lb/ft of torque will be noticeable.
New Member
Joined: 06-21-09
Posts: 186
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From: South Texas
I run stock other than a GMS1 and I love it. Can't see much more power being usable on the street. I spin all the way through second and 3rd torque steers pretty good when stomping the throttle from around 2000 rpm or so. By that time you are well over the speed limit. Don't let anybody else convince you otherwise, your gonna love it!!
Senior Member
Joined: 06-21-05
Posts: 5,060
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From: London, Ontario
You can expect to roast your stockers without proper throttle control in 2nd 
. I couldn't help it, you'll enjoy it. GMS1 vs Stock is like night and day, the tune is more solid, the hesitations are gone and it pulls more than enough to get me in **** beyond imagination when merging ontot he highway!
. I couldn't help it, you'll enjoy it. GMS1 vs Stock is like night and day, the tune is more solid, the hesitations are gone and it pulls more than enough to get me in **** beyond imagination when merging ontot he highway!
Senior Member
Joined: 06-21-05
Posts: 5,060
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From: London, Ontario
. You won't be disappointed with your purchase, at least I haven't been and I drove in the snow with it for 6 months. I have only had the chance to really get on it (and hold it to the road) in the last few weeks....I'm satisfied.
Senior Member
Joined: 07-25-08
Posts: 12,450
Likes: 6
From: Florida
New Member
Joined: 10-21-08
Posts: 50
Likes: 0
From: Stafford, VA
it is awesome! 
I got mine installed yesterday, got a nice stretch of road and really got into it in 2nd gear and smoked the tires! Had a smile on my face for the rest of the day. Its a whole new beast 
You will def be happy with it!
I got mine installed yesterday, got a nice stretch of road and really got into it in 2nd gear and smoked the tires! Had a smile on my face for the rest of the day. Its a whole new beast You will def be happy with it!
Senior Member
Joined: 03-15-09
Posts: 5,585
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From: Ontario
I am getting my parts on the first day I get my car to work......
Mine just might sound a little meaner
Senior Member
Joined: 06-21-05
Posts: 5,060
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From: London, Ontario
. I'd like to get them off, but the end of March is always the problem and I don't wanna get stuck in ice storms with the stockers again.
Senior Member
Joined: 07-25-08
Posts: 12,450
Likes: 6
From: Florida
My clutch and tires are really going to hate me soon.
im not exactly sure what attributes to it... but the HP gains are incredible... also if im not mistaken the GMS1 tune is what 21 psi? im at 23 psi with 330 hp and 380 tq
Senior Member
Joined: 07-25-08
Posts: 12,450
Likes: 6
From: Florida
Big torque gains and a huge increase in HP under the curve especially in the midrange. A long while ago when the Stage 1 kit first came out ADM got 345 whp and 395 wrtq on an HHR with Catless DP, CP, IC and the stock airbox! Factor in the gains for a good intake at those flow levels and you will see over 400 wrtq and 360+ whp