racing fuel?
- Thread starter supra88gr
- Start date
Fuzz420
Are U Here 2 take My Baby
dbsupra90;1299009 said:
Overkill maybe but over priced i dunno. I bought some vp unleaded 103 a few weeks back(locally) $13 per gal. c-16 was $16 per gal.When i buy more ill get c-16 only because its a better deal price wise
dbsupra90;1298544 said:
last year my car made 478rwhp on pump alone. and this year i am going back to get it tuned again and i want to push the car to its limits with running it on race gas and tuning it with my aem. that's why i was asking race gas or meth? money is no object
Honestly, it's a matter of preference. On my car, I ran methanol. When I wanted to turn up the boost and still be safe, I put some 110 in the tank. It probably wasn't necessary, but it sure made me feel better.
Yes C16 gives enough octane, but wouldn't the EGT's and pistons be dramatically cooler with meth/water injection? Particularly if the original poster of this thread is running stock internals? (Not sure, just asking!)ChrisC;1298871 said:
Turbo C16 is designed to be a slower burning fuel and to keep egt's down. I dont have much experiance with meth/water injection but im sure once they are tuned correctly they work very well. Personally, I like getting reassurance that I have all the octane needed when pushing big boost, no electronics to fail or hickup.
Theres unleaded race fuel all the way to 118 octane. VP sells it.sneakypete;1297735 said:
LPG is usually anywhere from 120-140 octane.IJ.;1297744 said:
VP is one of the major companies that sells it and you can get a better deal.northwestsupra;1298082 said:i want race gasdoesnt vp sell it? or anyone have a better place to get it
You will always make more power the lower the octane. I would suggest a pump/race mixture or meth, but as far as meth goes, I wouldnt use it all the time, only for those 25-30psi runs. Meth leaves a residue, and water isnt good for an engine over an extended period of time. The water silences knock but it can also create issues like fake knock making you think its knocking or detonating but its really not. Even c16 race gas leaves a residue though.
black89t;1299001 said:
Aircraft fuel is equivalent to c16. Octane booster at its highest point ive seen (its supposively illegal for dot.) is only four to five points. Meaning it will raise 92 octane to 98-99 (as its advertised ive never heard any scientific reviews)
also, c10 is made by vp is 100 octane and is metallic compound free so its safe for o2 sensors and cats.
Check out http://vpracingfuels.com/fuels_unleaded.asp
The streetblaze 100 Ethanol seems to be a good mixture between turbo street and safe for cats and o2s
Check out http://vpracingfuels.com/fuels_unleaded.asp
The streetblaze 100 Ethanol seems to be a good mixture between turbo street and safe for cats and o2s
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You will only make more power with higher octane if the motor is tuned to take advantage of it...i.e. higher boost and increased timing. Same for water/meth injection.
"Silencing knock" is a misperception. Higher octane and meth works by lowering cylinder combustion temps which, in turn, decreases the chance of detonation at the same compression. This is what allows you to increase boost/timing back to the detonation threshold point. Increased boost/timing is where the increased power is coming from, not from the "race gas" per say.
This kind of tuning should never be done on the street. On the dyno with a set of "ears" to listen where the detonation threshold occurs...that is now your limit. The street tune is done after, staying below that limit. This is pretty advanced for most guys...increasing octane or using meth and then cranking the boost is asking to blow the motor. The 2nd danger is tuning for race gas then using pump gas on the street...your safety margin is radically decreased, resulting in a very likely change of detonation under boost. All it takes is a little bit of a lead foot and BOOM.
As stated earlier, using high octane gas on a motor a the stock ECU will result in lower power output. High octane gas contains less BTUs than pump gas.
Of course, all this depends on what EMS one is running
"Silencing knock" is a misperception. Higher octane and meth works by lowering cylinder combustion temps which, in turn, decreases the chance of detonation at the same compression. This is what allows you to increase boost/timing back to the detonation threshold point. Increased boost/timing is where the increased power is coming from, not from the "race gas" per say.
This kind of tuning should never be done on the street. On the dyno with a set of "ears" to listen where the detonation threshold occurs...that is now your limit. The street tune is done after, staying below that limit. This is pretty advanced for most guys...increasing octane or using meth and then cranking the boost is asking to blow the motor. The 2nd danger is tuning for race gas then using pump gas on the street...your safety margin is radically decreased, resulting in a very likely change of detonation under boost. All it takes is a little bit of a lead foot and BOOM.
As stated earlier, using high octane gas on a motor a the stock ECU will result in lower power output. High octane gas contains less BTUs than pump gas.
Of course, all this depends on what EMS one is running
i have an aem ems to tune everything with. pretty much my quistion is thes year my car is going back to the shop to get tuned i want to make some extra hp what is better to run meth or race gas or both and money like stated above is no object because if i tune it with race gas then i will run the car strickly on race gas or what ever i end up using
Turbo?
Injectors?
Boost?
Exhaust?
Trans?
Headwork?
Cams?
IC?
It's not a simple question to answer as all of the above has an effect, there will be a point where Octane isn't the only answer and something else will flatline it.
You run enough Octane to keep it out of detonation and no more or you're just throwing power away.
Injectors?
Boost?
Exhaust?
Trans?
Headwork?
Cams?
IC?
It's not a simple question to answer as all of the above has an effect, there will be a point where Octane isn't the only answer and something else will flatline it.
You run enough Octane to keep it out of detonation and no more or you're just throwing power away.
e-85 would be my vote. although a dedicated tune is needed with the fuel flow to back it up.
Stepping above pump gas makes a piggy back a weak tuning device. Like jdub said, the WHOLE power band needs to be tunned for it. Standalone or leave it alone with pump gas.... your never going to get the results that are worth $10-15 a gallon from the stock ecu.
Stepping above pump gas makes a piggy back a weak tuning device. Like jdub said, the WHOLE power band needs to be tunned for it. Standalone or leave it alone with pump gas.... your never going to get the results that are worth $10-15 a gallon from the stock ecu.
I feel sorry for the big turbo supra owners who have to run around on weekends with $16/per gallon C16 race gas in there tank to prove themselves.
As for E85, you can get it fairly cheap right now, and be able to run lots of boost, but you will be lucky to get 12mpg on the highway.
Sorry for my negative rant.
As for E85, you can get it fairly cheap right now, and be able to run lots of boost, but you will be lucky to get 12mpg on the highway.
Sorry for my negative rant.