For those with GM Stage 3
#228
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Im looking for some help. those with the stage 3 kit and pulley wat are you getting for boost out of it? i dynoed it the other day and got 230 w/14 psi no spray really bummed. also is there an actually "gm" document to prove how much boost is supposed to be produced? im running rich, i have no codes and the control side of the bypass control valve tested ok according to S.I. so i think i either have a slipping belt, bad gaskets, or defective supercharger. plz any comment would help.
#229
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Hitting 16psi @ 7000rpm, making 243whp/224ft-lbs on an otherwise stock car + 3" intake.
This is just about the best resource for Stage 3 Q & A:
http://www.crateenginedepot.com/stor...s-W57C196.aspx
This is just about the best resource for Stage 3 Q & A:
http://www.crateenginedepot.com/stor...s-W57C196.aspx
#230
Im looking for some help. those with the stage 3 kit and pulley wat are you getting for boost out of it? i dynoed it the other day and got 230 w/14 psi no spray really bummed. also is there an actually "gm" document to prove how much boost is supposed to be produced? im running rich, i have no codes and the control side of the bypass control valve tested ok according to S.I. so i think i either have a slipping belt, bad gaskets, or defective supercharger. plz any comment would help.
#231
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yeah i understand what you guys are saying. my mods are as follows gm parts: header, full exhaust(still have cat), intake, nitrous, stage 3 are all that would pertain to this problem but i know for a fact that when i frst installed stage 3 i was boosting 18 solid so not sure what the deal is. im in class now and so coincidentally we are working on engine performance so he is going to let me take the blower off and check it out, maybe he will have some input on it. i think something is possibly holding the bypaass valve open or it is mechanically broken idk g2g to class. anymore input is welcomed!!! thanks all
btw can anyone tell me where to find a "pulley size to boost" conversion chart im thinking about running a smaller pulley to have a little higher boost and with more of a duration over all. it has been so long since i actually looked into all of this that i forgot all the websites. any suggestions?
btw can anyone tell me where to find a "pulley size to boost" conversion chart im thinking about running a smaller pulley to have a little higher boost and with more of a duration over all. it has been so long since i actually looked into all of this that i forgot all the websites. any suggestions?
Last edited by GLTHSWrestler; 08-04-2009 at 11:47 AM. Reason: Automerged Doublepost
#232
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i usually hit 16.25 psi (its the little nick right after 15 psi) @ 6750 rpm and hold it till 7000 rpm. my car puts down 249 whp with the mods in my sig. you should be boosting more than 14 psi on the stage 3 pulley, unless you have a 3" exhaust and other flow enhancements. like you mentioned .... you may have a leaking blower gasket, or some belt slip. hope everything turns out ok.
Was this on 100 octane mode (249whp) or stock mode
I hit usually around 17psi with my 2.9 pulley. Although I have not hit it recently due to the new clutch and break in period(nothing over 3000rpm). 150 miles left to go.
#233
the 249 was on my 07' GM Stage Tune. I have most of the Stage 3 hardware, minus the PCM. in the near future i will be looking to purchase the gm stage 3 pcm. i posted in this thread to learn more about the stage 3 tune vs. my 07' gm tune, which is one of the better stage tunes gm put out for the stage 1 & stage 2 kits. i wanted to see if the stage 3 tune is more aggresive, and if it runs smoother.
Last edited by Staged07SS; 08-10-2009 at 01:36 PM.
#234
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the 249 was on my 07' GM Stage Tune. I have most of the Stage 3 hardware, minus the PCM. in the near future i will be looking to purchase the gm stage 3 pcm. i posted in this thread to learn more about the stage 3 tune vs. my 07' gm tune, which is one of the better stage tunes gm put out for the stage 1 & stage 2 kits. i wanted to see if the stage 3 tune is more aggresive, and i runs smoother.
#236
Ok my question is I have an 07' SS/SC. My mods are GM Stage 3 upgrade, ID-Tuning headers and downpipe, Magnaflow full cat-back exhaust.
Thats all that would make a difference in what im asking. Im only running 13.5lbs on the stage 3, The car does have a stock intake on it. I dont see that robbing me of that much boost tho, I see some of you guys running 17lbs and just wondered if I was missing something. Mind you the car only has 3500miles on it! Thanks alot guys!!
Thats all that would make a difference in what im asking. Im only running 13.5lbs on the stage 3, The car does have a stock intake on it. I dont see that robbing me of that much boost tho, I see some of you guys running 17lbs and just wondered if I was missing something. Mind you the car only has 3500miles on it! Thanks alot guys!!
#237
Ok my question is I have an 07' SS/SC. My mods are GM Stage 3 upgrade, ID-Tuning headers and downpipe, Magnaflow full cat-back exhaust.
Thats all that would make a difference in what im asking. Im only running 13.5lbs on the stage 3, The car does have a stock intake on it. I dont see that robbing me of that much boost tho, I see some of you guys running 17lbs and just wondered if I was missing something. Mind you the car only has 3500miles on it! Thanks alot guys!!
Thats all that would make a difference in what im asking. Im only running 13.5lbs on the stage 3, The car does have a stock intake on it. I dont see that robbing me of that much boost tho, I see some of you guys running 17lbs and just wondered if I was missing something. Mind you the car only has 3500miles on it! Thanks alot guys!!
#238
^^^ The car does have everything from the stage 3 installed on it. I'll have to start looking around to see if I can find anything out. Last night the car was actually only 12lbs, which does seem pretty low but maybe I'm wrong.
How can I tell if my belt was slipping? Thanks alot!
How can I tell if my belt was slipping? Thanks alot!
#241
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Got the GMPP clutch now in going to the track to see how it performs on 08/30. Hopefully nothing breaks- will report back with finally how the GMS3 100 octane mode and rev limit at 7200 posts. I'm guessing traction will be an issue but we will see. Posted at the same track a 14.7 3 years ago with just the Kand N intake.
Anyone want to predict any times for the 1/4 mile
Anyone want to predict any times for the 1/4 mile
#242
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Update- Just got back from the track- I did 5 runs. Now I need some damn slicks. Dropped the tire pressure form 32 to 20 and I was taking off decent but second gear the tires would spin. My best was 14.1 at 103 .61mph. Or the track needs better prep.
#243
hey Stage 3 guys !! i finally purchased the missing piece to become GM Stage 3 .... the ECU. i have a couple of questions for you guys ....
1. whats the a/f ratio of the GM Stage 3 Tune? i have logged my 07' GM Stage Tune, and the a/f ratio is 10.80.
2. will the car operate better on the GM Stage 3 Tune? more power, smoother acceleration?
3. i know its not emissions certified, but will it pass an emissions test? all we do in PA is a gas gap check.
1. whats the a/f ratio of the GM Stage 3 Tune? i have logged my 07' GM Stage Tune, and the a/f ratio is 10.80.
2. will the car operate better on the GM Stage 3 Tune? more power, smoother acceleration?
3. i know its not emissions certified, but will it pass an emissions test? all we do in PA is a gas gap check.
#244
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hey Stage 3 guys !! i finally purchased the missing piece to become GM Stage 3 .... the ECU. i have a couple of questions for you guys ....
1. whats the a/f ratio of the GM Stage 3 Tune? i have logged my 07' GM Stage Tune, and the a/f ratio is 10.80.
2. will the car operate better on the GM Stage 3 Tune? more power, smoother acceleration?
3. i know its not emissions certified, but will it pass an emissions test? all we do in PA is a gas gap check.
1. whats the a/f ratio of the GM Stage 3 Tune? i have logged my 07' GM Stage Tune, and the a/f ratio is 10.80.
2. will the car operate better on the GM Stage 3 Tune? more power, smoother acceleration?
3. i know its not emissions certified, but will it pass an emissions test? all we do in PA is a gas gap check.
2.= Yes it operates better with more mods like exhaust and header combo
3. = live in michigan - don't have to worry about this...yet
4= You can run no cat on the downpipe and it won't throw a code.
5 = It runs the best with High octane mode and 93+ octane
6= unless you set it past 7k it defaults to 7k rpm
7= you will need a new clutch - enjoy
#245
1.= don't know but I think your close
2.= Yes it operates better with more mods like exhaust and header combo
3. = live in michigan - don't have to worry about this...yet
4= You can run no cat on the downpipe and it won't throw a code.
5 = It runs the best with High octane mode and 93+ octane
6= unless you set it past 7k it defaults to 7k rpm
7= you will need a new clutch - enjoy
2.= Yes it operates better with more mods like exhaust and header combo
3. = live in michigan - don't have to worry about this...yet
4= You can run no cat on the downpipe and it won't throw a code.
5 = It runs the best with High octane mode and 93+ octane
6= unless you set it past 7k it defaults to 7k rpm
7= you will need a new clutch - enjoy
#248
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Well everytime you turn off the car it defaults back to stock rpm and if you have the 100 octane set. It will shut this back to 93 octane mode till you reset it
#250
Question: I know the GM Stage 3 tune isn't emissions certified, but will I still be able to recieve check engine lights/dash notifications if something like my gas cap is shot??
Last edited by Staged07SS; 09-15-2009 at 10:21 AM. Reason: Automerged Doublepost