What are the limits of ls1edit horsepower wise?
04-09-2003, 12:20 AM
#2
Re: What are the limits of ls1edit horsepower wise? I don't think there is a limit.
Nitrous.... the skies the limit
Naturally Aspirated.....Around the mid 600's because of rpm limitations
Forced Induction....It gets pretty hairy around 700 hp, but I dont' think we have hit a limit yet, it just requires some external gizmos.
The only substantial limit on the PCM is the rpm limiter. FI presents the MAF / PCM Flow limit, but you can get around that with some frequency tricks (it just depends how much you want to molest the PCM programming).
JMHO
Nitrous.... the skies the limit
Naturally Aspirated.....Around the mid 600's because of rpm limitations
Forced Induction....It gets pretty hairy around 700 hp, but I dont' think we have hit a limit yet, it just requires some external gizmos.
The only substantial limit on the PCM is the rpm limiter. FI presents the MAF / PCM Flow limit, but you can get around that with some frequency tricks (it just depends how much you want to molest the PCM programming).
JMHO
04-09-2003, 12:53 AM
#3
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Re: What are the limits of ls1edit horsepower wise? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> FI presents the MAF / PCM Flow limit, but you can get around that with some frequency tricks (it just depends how much you want to molest the PCM programming). </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">If I were shooting for 600+rwhp with a turbo could you guys (ESP) "trick" the PCM to handle the flow?
How much would the PCM be "molested" (umm that didn't sound right) for that kind of a goal?
How much would the PCM be "molested" (umm that didn't sound right) for that kind of a goal?
04-09-2003, 01:00 AM
#4
Re: What are the limits of ls1edit horsepower wise? Sure, it's not a problem, it is just a matter of altering the incoming MAF frequency and getting the right gizmo to do it.
Once you alter the incoming MAF frequency, you then alter all pertaining PCM tables by the same factor that you have adjusted the MAF fequency by.
Your PCM basically becomes molested because very few people have a chance of properly editing your PCM once this is done because all of the tables are out of whack (multiplied, or shifted according to the "factor").
<small>[ April 09, 2003, 01:04 AM: Message edited by: NoGo ]</small>
Once you alter the incoming MAF frequency, you then alter all pertaining PCM tables by the same factor that you have adjusted the MAF fequency by.
Your PCM basically becomes molested because very few people have a chance of properly editing your PCM once this is done because all of the tables are out of whack (multiplied, or shifted according to the "factor").
<small>[ April 09, 2003, 01:04 AM: Message edited by: NoGo ]</small>
04-11-2003, 08:12 AM
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Re: What are the limits of ls1edit horsepower wise? Personally, if I were building a FI motor of 'higher caliber', I'd invest in an aftermarket computer. Two reasons: multi-bar MAP support, and wideband O2 sensor compatibility. Those are two things that our PCMs will never have (ooh, I said the 'n' word <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> ).
There are guys running 9's on factory computers. How much faster ya need to go? <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
-Andrew
There are guys running 9's on factory computers. How much faster ya need to go? <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
-Andrew
04-11-2003, 10:40 AM
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Re: What are the limits of ls1edit horsepower wise? The factory pcm has support for 2 bar mapping , we regularly discard the maf on any of our head/cam combo's here down under.
2 bar mapping of supercharged stuff is also avaliable on our LS1's using the same PCM ( we have rewritten some of the code though to allow this)
Have a couple of 600+ rwhp street cars running around with under 10 lb of boost both positive displacment and cetrafugal chargers.
No limit as far as I can see - just keep making horespower.
<small>[ April 11, 2003, 10:42 AM: Message edited by: Tomcat ]</small>
2 bar mapping of supercharged stuff is also avaliable on our LS1's using the same PCM ( we have rewritten some of the code though to allow this)
Have a couple of 600+ rwhp street cars running around with under 10 lb of boost both positive displacment and cetrafugal chargers.
No limit as far as I can see - just keep making horespower.
<small>[ April 11, 2003, 10:42 AM: Message edited by: Tomcat ]</small>
