LS6--->LSX Intake Bolt-On Dyno Results
03-26-2004, 02:40 PM
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LS6--->LSX Intake Bolt-On Dyno Results I did a before/after back-to-back test going from the ls6 intake to the lsx to see the results and here they are. 
I lost 1hp and 1 torque switching from the LS6 intake to the 78mm LSX Intake.
Here's the graph comparing the best runs, ignore the spike with the LSX and watch the curves at a peak of 5600rpm the hp is down about 1 from the ls6 intake.
http://www.cobraeater.cz28.com/cgi-b...20VS%20LSX.JPG
Here's the ls6 intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
The lsx intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
So, it looks like at the all bolt-on level the engine just doesn't need any more air than the ls6 intake provides.
BTW, I gained 7hp and 10 torque going from the ls1 intake to the ls6 intake.
I lost 1hp and 1 torque switching from the LS6 intake to the 78mm LSX Intake.
Here's the graph comparing the best runs, ignore the spike with the LSX and watch the curves at a peak of 5600rpm the hp is down about 1 from the ls6 intake.
http://www.cobraeater.cz28.com/cgi-b...20VS%20LSX.JPG
Here's the ls6 intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
The lsx intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
So, it looks like at the all bolt-on level the engine just doesn't need any more air than the ls6 intake provides.
BTW, I gained 7hp and 10 torque going from the ls1 intake to the ls6 intake.
03-26-2004, 06:20 PM
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Originally Posted by Cobraeater
I did a before/after back-to-back test going from the ls6 intake to the lsx to see the results and here they are.
I lost 1hp and 1 torque switching from the LS6 intake to the 78mm LSX Intake.
Here's the graph comparing the best runs, ignore the spike with the LSX and watch the curves at a peak of 5600rpm the hp is down about 1 from the ls6 intake.
http://www.cobraeater.cz28.com/cgi-b...20VS%20LSX.JPG
Here's the ls6 intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
The lsx intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
So, it looks like at the all bolt-on level the engine just doesn't need any more air than the ls6 intake provides.
BTW, I gained 7hp and 10 torque going from the ls1 intake to the ls6 intake.
I lost 1hp and 1 torque switching from the LS6 intake to the 78mm LSX Intake.
Here's the graph comparing the best runs, ignore the spike with the LSX and watch the curves at a peak of 5600rpm the hp is down about 1 from the ls6 intake.
http://www.cobraeater.cz28.com/cgi-b...20VS%20LSX.JPG
Here's the ls6 intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
The lsx intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
So, it looks like at the all bolt-on level the engine just doesn't need any more air than the ls6 intake provides.
BTW, I gained 7hp and 10 torque going from the ls1 intake to the ls6 intake.
Last edited by ITSovr4U; 03-26-2004 at 06:59 PM.
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03-26-2004, 07:49 PM
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Originally Posted by Cobraeater
I did a before/after back-to-back test going from the ls6 intake to the lsx to see the results and here they are.
I lost 1hp and 1 torque switching from the LS6 intake to the 78mm LSX Intake.
Here's the graph comparing the best runs, ignore the spike with the LSX and watch the curves at a peak of 5600rpm the hp is down about 1 from the ls6 intake.
http://www.cobraeater.cz28.com/cgi-b...20VS%20LSX.JPG
Here's the ls6 intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
The lsx intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
So, it looks like at the all bolt-on level the engine just doesn't need any more air than the ls6 intake provides.
BTW, I gained 7hp and 10 torque going from the ls1 intake to the ls6 intake.
I lost 1hp and 1 torque switching from the LS6 intake to the 78mm LSX Intake.
Here's the graph comparing the best runs, ignore the spike with the LSX and watch the curves at a peak of 5600rpm the hp is down about 1 from the ls6 intake.
http://www.cobraeater.cz28.com/cgi-b...20VS%20LSX.JPG
Here's the ls6 intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
The lsx intake runs.
http://www.cobraeater.cz28.com/cgi-b...yno%20Runs.jpg
So, it looks like at the all bolt-on level the engine just doesn't need any more air than the ls6 intake provides.
BTW, I gained 7hp and 10 torque going from the ls1 intake to the ls6 intake.
Also, did you check the TB problem many people have been having? Just checking to be sure. Good luck with your purchace. If you end up not liking it I'll take it off your hands from ya.
03-27-2004, 12:51 AM
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I had a full LS1 Edit tune done right after the lsx intake swap.
The a/f was set to 13.0 all across the rev range and it still made the same power.
The 98-99 throttle body cams open 100% with the lsx since they're smaller than the 00-02 tb cams, so I didn't need to grind on it or anything.
The a/f was set to 13.0 all across the rev range and it still made the same power.
The 98-99 throttle body cams open 100% with the lsx since they're smaller than the 00-02 tb cams, so I didn't need to grind on it or anything.
03-27-2004, 02:57 PM
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Originally Posted by Cobraeater
I had a full LS1 Edit tune done right after the lsx intake swap.
The a/f was set to 13.0 all across the rev range and it still made the same power.
The 98-99 throttle body cams open 100% with the lsx since they're smaller than the 00-02 tb cams, so I didn't need to grind on it or anything.
The a/f was set to 13.0 all across the rev range and it still made the same power.
The 98-99 throttle body cams open 100% with the lsx since they're smaller than the 00-02 tb cams, so I didn't need to grind on it or anything.
03-27-2004, 02:59 PM
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Originally Posted by Revelation222
Ouch...Well I guess all I can say is either wait until you go into the engine to see if there are any gains or try to resell the intake to get some of your money back. Sorry to hear about your luck.
03-27-2004, 07:04 PM
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Originally Posted by Cobraeater
The 98-99 throttle body cams open 100% with the lsx since they're smaller than the 00-02 tb cams, so I didn't need to grind on it or anything.
So you are still using the stock throttle body?
03-27-2004, 08:22 PM
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Originally Posted by Revelation222
Oh...Is it possible that the Shaner TB that you recieved back in place of your old TB was of a newer design? It's a long shot but im just trying to look at it from every angle.
GM made the throttle body cams for 98-99 smaller than the 00-02 for some reason.
that blows bro..
03-27-2004, 09:24 PM
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Originally Posted by Cobraeater
I had a full LS1 Edit tune done right after the lsx intake swap.
The a/f was set to 13.0 all across the rev range and it still made the same power.
The a/f was set to 13.0 all across the rev range and it still made the same power.
If you are saying that your graph is BEFORE the tuning, and tuning didn't change much, then I would still check if, f.e., the timing is right. Why don't you post the graph after tuning?
03-28-2004, 01:40 AM
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Originally Posted by Iv_z28
Well, it IS pretty obvious from your grath that your A/F ratio have gone up with the LSX.
If you are saying that your graph is BEFORE the tuning, and tuning didn't change much, then I would still check if, f.e., the timing is right. Why don't you post the graph after tuning?
If you are saying that your graph is BEFORE the tuning, and tuning didn't change much, then I would still check if, f.e., the timing is right. Why don't you post the graph after tuning?
The dyno graphs above were all done on the stock tune.
I'm going to MMT/HPE probably on Monday, so I'll post the tuned dyno graphs late Monday or Tuesday.
The timing was bumped up from 24-26* in the midrange to 27* and in the upper rpms it was 28* with the stock tune and ls1 edit.
03-29-2004, 12:19 AM
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Damn I was really hoping the LSX intake would be our savior intake. I am a little confused though was your car actually tuned after the above dynos that you posted to correct for it being a tad leaner? It sounds like it was but that your graph looked the same as before the tune with the leaner a/f ratio. Did I understand right?