Powerchip
All remarks welcome!!
Last edited by Richard Galing; Apr 7, 2004 at 03:32 AM.
I've ran both software files 91 & 93 PC...is there a difference in power-pull? My buttdyno says yes, but not huge! Along with the increase in gas prices ( Unocal 76 100 octane @ $5.95 a gallon) even octane boost additives (I tend to use VP Racing fuels C5 @ $15) it's become a pricey investment. At the moment I opt to use the 91 version and occasional fill up on the 100 octane specially on warm days here in the valley area were the ECU will pull xtra timing. On a side note, Powerchip has provided me outstanding customer service...I believe this is a key element when purchasing software tuning products, issues may arise...and both Joel & Jessie returns messages promptly, even provides their cell# just in case the unexpected happens.
i have been using VP performance unleaded at 100 octane and currently use the motorsport 103, both fuels oxygenated and o2 sensor and catalyst friendly,i buy in 55gal drum at $5 a gallon,have no data on current VP spec sheet about c5,can you provide info on this fuel,just wondering but would not consider a &15 gallon of any fuel,do you run this fuel 100% or mix?
www.vpracingfuels.com/C5.html
So what about this catalytic converter issue ? And do you notice any significant difference using that product? thanks for your help Sean...
use on or w/catalytic converters ?? I got the Powerchip tuning done on my 01' S500 nice results I'm pretty sure I got the 93 gold package
So what about this catalytic converter issue ? And do you notice any significant difference using that product? thanks for your help Sean...
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There is nothing to be gained by running higher octane fuel except a bigger fuel bill, unless you are running increased compression, boost or both.
Generally higher octane fuels are denser. When you change to a higher octane fuel, you are effectively making the mixture richer, which reduces, not increases power.
The idea of richening fuel mixtures to increase power on modern cars is a fallacy. Most WOT mixtures are overly rich for engine safety in the first place.
stephens,
Did PC figure out how to raise the rpm limit for Mecedes
But when I forced the issue Powerchip confessed that they did not know how to raise the rev limit. I felt a little cheated. What was worse was that there was no increase in power at all, based on trap speed testing and Nology PDA dyno runs.
Before you guys run off trying different fuels remember a few important facts.
There is nothing to be gained by running higher octane fuel except a bigger fuel bill, unless you are running increased compression, boost or both.
Generally higher octane fuels are denser. When you change to a higher octane fuel, you are effectively making the mixture richer, which reduces, not increases power.
The idea of richening fuel mixtures to increase power on modern cars is a fallacy. Most WOT mixtures are overly rich for engine safety in the first place.
The reason I ask is that Powerchip also told me they could raise the rev limit on my C43 and then they went into all the reasons why that would be bad.
But when I forced the issue Powerchip confessed that they did not know how to raise the rev limit. I felt a little cheated. What was worse was that there was no increase in power at all, based on trap speed testing and Nology PDA dyno runs.
Hence, you absolutely need good high octane fuel!
Kens-E55
Ditto on what Zeppelin is saying about the advanced timing. He is absolutely correct. Higher octane=cooler combustion temps=more advanced timing(when programmed)=more Torq.
Hence, you absolutely need good high octane fuel!
Kens-E55
The guys at PC are very conservative, so if they specify 93 octane, go with 93, but also don't be surprised if you get more power on 92.
I'm not recommending to run lower octane fuel than is specified, just floating a hypothesis.



