2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

Boost on a 2.6" Pulley?

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Old Oct 5, 2010 | 10:06 AM
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Boost on a 2.6" Pulley?

So I'm running a 2.6" pulley now. I still havent gotten on it cause I'm only running a Trifecta base tune (waiting till I have a free minute to do some logs)

I'm just wondering how many lbs of boost I should be seeing
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Old Oct 5, 2010 | 10:13 AM
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No one can really tell you how many lbs of boost you should be seeing, because it can vary so much depending on mods, temp, elevation, etc. Maybe someone can give you a ball park range, but i feel that this is going to turn into the usual cobaltss.net "i make this much boost" thread.

How many lbs of boost are making currently?
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Old Oct 5, 2010 | 10:14 AM
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well on my GMS2 with intake and catback I made like 15-17lbs depending on outside temp
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Old Oct 5, 2010 | 10:17 AM
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I think ebristol says he makes 16lbs with his 2.6". But there are a lot of factors as Staged said.
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Old Oct 5, 2010 | 10:18 AM
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Hey staged you and i need to make a thread on what to see and what not to see. lol. Like When you open it up it should say IT DEPENDS ON TIMING, ALTITUDE, TUNE, MODS, OUT SIDE TEMPS, IAT2S, COMPRESSION, AND SO FORTH.
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Old Oct 5, 2010 | 10:19 AM
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i made 18 or so... BUT i was on stock dp and mani.... when i was 2.6
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Old Oct 5, 2010 | 10:22 AM
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Originally Posted by Chevycobaltss3
Hey staged you and i need to make a thread on what to see and what not to see. lol. Like When you open it up it should say IT DEPENDS ON TIMING, ALTITUDE, TUNE, MODS, OUT SIDE TEMPS, IAT2S, COMPRESSION, AND SO FORTH.
Haha, for real,

OP ... I thought you want to know what your boost level should be for a 2.6? Do you have a 2.6 currently installed? If you want a range I would say anywhere between 16-18psi would be acceptable depending on all the factors i listed.
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Old Oct 5, 2010 | 10:25 AM
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yes of course but I havent gotten on it at all. The most I've done is half throttle and it looked like it was around 17lbs
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Old Oct 5, 2010 | 10:27 AM
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Originally Posted by spitefulxcheerio
yes of course but I havent gotten on it at all. The most I've done is half throttle and it looked like it was around 17lbs
Well i see you have a 2.5" downpipe. I try to tell people that is to small for the lsj when you start to flow more air, but no one listens. I'm not saying your setup is crappy, but you will see higher boost levels than someone with a 3" downpipe or midlength setup due to your exhaust restrictions. 17psi at half throttle seems awefully high, but again I cant say that your boost levels are right or wrong.
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Old Oct 5, 2010 | 10:41 AM
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Well I wanted to keep this shitty 2.5" dp until there was some more conclusive data on the OTTP longtube...then I'll buy that
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Old Oct 5, 2010 | 11:07 AM
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Originally Posted by spitefulxcheerio
Well I wanted to keep this shitty 2.5" dp until there was some more conclusive data on the OTTP longtube...then I'll buy that
You will be waiting a long time for that man. No one has any data on that header, and it has been out for months now. To be honest you are better off getting a good mid length setup like ZZP or Pacesetter.
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Old Oct 5, 2010 | 12:01 PM
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That's awfully odd, but then again, all of the factors that play, as Staged says..

I hit 16psi on GMS2, and I would think more on a 2.6"

As for exhaust.. I would say 1.75" primaries, 3" DP, 2.5" cat-back.
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Old Oct 5, 2010 | 12:26 PM
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better have some good cooling mods for the 2.6 or your gunna heat soak like a m.f.

i had a 2.8, and every cooling mod but meth and held 17.5 psi....
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Old Oct 5, 2010 | 12:30 PM
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Originally Posted by xxxxsh4d0wxxxx
That's awfully odd, but then again, all of the factors that play, as Staged says..

I hit 16psi on GMS2, and I would think more on a 2.6"

As for exhaust.. I would say 1.75" primaries, 3" DP, 2.5" cat-back.
I'm sure you have/had the stock exhaust. If you get a full exhaust like the one you mention (perfect setup by the way) your boost would be lower. Good exhaust setups are a must when you start to pulley down. Lots of boost does not always mean more power. People need to think in terms of efficiency instead of maximum boost numbers.
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Old Oct 5, 2010 | 12:49 PM
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Originally Posted by Staged07SS
I'm sure you have/had the stock exhaust. If you get a full exhaust like the one you mention (perfect setup by the way) your boost would be lower. Good exhaust setups are a must when you start to pulley down. Lots of boost does not always mean more power. People need to think in terms of efficiency instead of maximum boost numbers.
Thanks! That is the setup I plan to run.

I am on the stock exhaust, with a 2.5" Clear Image, stainless steel, full v-band setup, cat-back in my room.. Waiting to see the new ZZP LT header/DP (which I will have v-banded also).. In which case, 1.75" primaries, 3" DP. I think people need to worry less about the size of the cat-back but more-so on the primaries. If you're spot-on with the primaries, and at least a 3" collector and DP.. Everything from there back is mostly preference. You could do 2.5" collector to 2.5" DP, but I wouldn't, same with the 3" cat-back.. You'd be, again, compromising efficiency.

My $.02
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Old Oct 5, 2010 | 01:08 PM
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17 lbs on a 2.6 for me
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Old Oct 5, 2010 | 01:18 PM
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Originally Posted by Staged07SS
You will be waiting a long time for that man. No one has any data on that header, and it has been out for months now. To be honest you are better off getting a good mid length setup like ZZP or Pacesetter.
Who would spend $700 for that setup anyways. I agree with the ZZP or Pacesetter approach.
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Old Oct 5, 2010 | 01:25 PM
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I have the ottp header, its a work of art, the welds are the best I have ever seen, the burns style collector as amazing, overall its a great looking header. It is just unclear the gains over other aftermarket headers, do I think the gains are significant? No, but it is a very well put together piece
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Old Oct 5, 2010 | 01:30 PM
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Originally Posted by Frew
I have the ottp header, its a work of art, the welds are the best I have ever seen, the burns style collector as amazing, overall its a great looking header. It is just unclear the gains over other aftermarket headers, do I think the gains are significant? No, but it is a very well put together piece
I was not knocking their quality just the cost for the header.
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Old Oct 5, 2010 | 02:52 PM
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Originally Posted by ssblackstealth
better have some good cooling mods for the 2.6 or your gunna heat soak like a m.f.

i had a 2.8, and every cooling mod but meth and held 17.5 psi....
Well when I'm running this custom flow through tank made by Euthanasia (full of distilled water ice btw)



plus meth and a zzp s3 H/E, cooling really wont be a problem

Originally Posted by Staged07SS
People need to think in terms of efficiency instead of maximum boost numbers.
I know that boost is a measurement of RESTRICTION not POWER. I'm really not a retarded ricer, I just wanted to know a general range so I could watch my boost and see if anything goes wrong while I'm doing data logs
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Old Oct 5, 2010 | 03:36 PM
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Originally Posted by spitefulxcheerio
Well when I'm running this custom flow through tank made by Euthanasia (full of distilled water ice btw)



plus meth and a zzp s3 H/E, cooling really wont be a problem



I know that boost is a measurement of RESTRICTION not POWER. I'm really not a retarded ricer, I just wanted to know a general range so I could watch my boost and see if anything goes wrong while I'm doing data logs
I never called u a retarded ricer. Calm yourself . I was only trying to help.

I made the comment about efficiency for the general community (not directed towards you), because there are always a million threads on this site about boost.

Last edited by Staged07SS; Oct 5, 2010 at 09:19 PM.
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Old Oct 5, 2010 | 03:42 PM
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17.5 pds on my 2.7 setup before
Stock header and 3 inch dp
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Old Oct 5, 2010 | 06:14 PM
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Originally Posted by spitefulxcheerio
Well when I'm running this custom flow through tank made by Euthanasia (full of distilled water ice btw)



plus meth and a zzp s3 H/E, cooling really wont be a problem



I know that boost is a measurement of RESTRICTION not POWER. I'm really not a retarded ricer, I just wanted to know a general range so I could watch my boost and see if anything goes wrong while I'm doing data logs
*panties in a twist*
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Old Oct 5, 2010 | 06:18 PM
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Both of you are retarded ricers lol
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Old Oct 5, 2010 | 08:27 PM
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Originally Posted by spitefulxcheerio
Well when I'm running this custom flow through tank made by Euthanasia (full of distilled water ice btw)



plus meth and a zzp s3 H/E, cooling really wont be a problem



I know that boost is a measurement of RESTRICTION not POWER. I'm really not a retarded ricer, I just wanted to know a general range so I could watch my boost and see if anything goes wrong while I'm doing data logs
yea man i hear ya, just tryin to help ya out
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