New Vortech supercharged dyno sheet posted....
06-25-2002, 11:39 AM
#33
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Actual numbers aside, what if we look at the DIFFERENCE between two peak points.
I picked 8300 rpm and estimate 156hp stock and 260hp supercharged.
That is a difference of 104hp. While it is not the 118hp which I have seen posted on S2Ki numerous times, it is clost enough to the 108hp peak hp increase figure Vortech is claiming on their website given all the variables in a dyno run.
I don't think this dyno is a very good indication of what the Vortech offering is capable of and how it compares to Comptech or brand xyz. I would prefer to see a picture of the dyno screen or print out scanned in from Vortech or better yet one from a customer who installed it himself or a had a local shop do it. It makes a lot more sense than guessing using %'s from other cars runs on a simlar dyno in another place with different variables. Also for those who are trying to use a % for a higher hp car(Z06 for example) it won't work at all because the higher the power the more the % is off on the dyno.
I picked 8300 rpm and estimate 156hp stock and 260hp supercharged.
That is a difference of 104hp. While it is not the 118hp which I have seen posted on S2Ki numerous times, it is clost enough to the 108hp peak hp increase figure Vortech is claiming on their website given all the variables in a dyno run.
I don't think this dyno is a very good indication of what the Vortech offering is capable of and how it compares to Comptech or brand xyz. I would prefer to see a picture of the dyno screen or print out scanned in from Vortech or better yet one from a customer who installed it himself or a had a local shop do it. It makes a lot more sense than guessing using %'s from other cars runs on a simlar dyno in another place with different variables. Also for those who are trying to use a % for a higher hp car(Z06 for example) it won't work at all because the higher the power the more the % is off on the dyno.
06-25-2002, 01:08 PM
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Joe, I will go look at it again, but as I recall, the Toda dyno DID show the standard shape, the graph was just transformed a little in the X/Y axis. I'll check though.
I could have sworn us discussing how unreliable dyno's were, Joe. I'm surprised you're taking this dyno so seriously, seeing as how it is in no way independently verified.
Blake
I could have sworn us discussing how unreliable dyno's were, Joe. I'm surprised you're taking this dyno so seriously, seeing as how it is in no way independently verified.
Blake
06-25-2002, 01:24 PM
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I don't understand the torque bump in the SC curve from 3500-4300 rpm (assuming the car was correctly tuned). Doesn't make sense in a centrifugal SC. I'd also be interested in a graph showing manifold pressure vs. rpm
Also, this is obviously a cut and paste graph given the HP/TQ crossover at 5400 in the stock curves. So, those of you trying to measure a % change at a given rpm are wasting your time unless you account for this difference.
Also, this is obviously a cut and paste graph given the HP/TQ crossover at 5400 in the stock curves. So, those of you trying to measure a % change at a given rpm are wasting your time unless you account for this difference.
06-25-2002, 01:29 PM
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[QUOTE]Originally posted by infinitebass
[B]...as I recall, the Toda dyno DID show the standard shape, the graph was just transformed a little in the X/Y axis. I'll check though.
[B]...as I recall, the Toda dyno DID show the standard shape, the graph was just transformed a little in the X/Y axis. I'll check though.