LS6--->LSX Intake Bolt-On Dyno Results
#21
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Hello,
If you have a H&C car w/all the goodies and a good tune, will it be necessary to retune it after upgrading w/the LSX???
Its my understanding that if you've had the AF ratio set to around the generally accepted performance ratio of 12:1, then the computer will recognize the newly increased airflow and adjust accordingly. IOW, it'll increase the fuel flow to bring the ratio back to 12:1.
Am I missing something? Just thought I'd ask the collected brain trust about this as this is exactly where I am regarding an LSX install next week.
Best Regards
Steve
If you have a H&C car w/all the goodies and a good tune, will it be necessary to retune it after upgrading w/the LSX???
Its my understanding that if you've had the AF ratio set to around the generally accepted performance ratio of 12:1, then the computer will recognize the newly increased airflow and adjust accordingly. IOW, it'll increase the fuel flow to bring the ratio back to 12:1.
Am I missing something? Just thought I'd ask the collected brain trust about this as this is exactly where I am regarding an LSX install next week.
Best Regards
Steve
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I don't beleive that the LS6 intake leaves a lot to be improved on. GM designed a great intake and for an aftermarket manufactur to improve upon it in the rpm range that most of us use will be quite a feat IMO. Look at the sheetmetal versions in the aftermarket. How many of them boost low-midrange torque? None! They do boost high rpm HP though, but that is the desired rpm range. This is beacause of runner length, shape and plenum volume. I do think that the LSX is a superior intake but for a bolt on car it is not the wisest money spent. That 800.00 would go a long way to a nitrous kit, or even 1/3 of a 12 bolt. If you are already cammed with ported (or aftermarket) heads then it would show its value, but even at that point I think you would be better off with a 90 mm version. Not a flame jusy an opinion.
Sorry to hear about your numbers.
Later,
Bart
Sorry to hear about your numbers.
Later,
Bart
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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?
http://www.cobraeater.cz28.com/cgi-b...20Edit%201.jpg
http://www.cobraeater.cz28.com/cgi-b...20Edit%202.jpg
As you can see by the 13-15 run the a/f was around 13.0 and the hp and torque was the same as before the tuning.
![Bang Head](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_banghead.gif)
So tuning didn't help.
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Originally Posted by Cobraeater
Here's the graphs from LS1 Edit.
http://www.cobraeater.cz28.com/cgi-b...20Edit%201.jpg
http://www.cobraeater.cz28.com/cgi-b...20Edit%202.jpg
As you can see by the 13-15 run the a/f was around 13.0 and the hp and torque was the same as before the tuning.
So tuning didn't help.
http://www.cobraeater.cz28.com/cgi-b...20Edit%201.jpg
http://www.cobraeater.cz28.com/cgi-b...20Edit%202.jpg
As you can see by the 13-15 run the a/f was around 13.0 and the hp and torque was the same as before the tuning.
![Bang Head](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_banghead.gif)
So tuning didn't help.
![Sad](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_sad.gif)