walbro 255 might flow enough for 500hp with gasoline, but e85 is not gasoline. e85 kat's require more fuel than gasoline for the same power numbers.GTR PrYdE wrote:yep, a walbro 255 is plenty for up to about 500whp, no need for an external pump either. most guys get a double pumper in-tank setup for 500+
Haha, yeah, yeah...WDRacing wrote:Mike don't you know that using E85 gives you cancer!!!!!!!!!!!!!
walbro, 370s, e85, all on a kat? what turbo did you have in mind for this setup?and no timing adjusments whatsoever? im currently gathering parts for a t25 kat, so this is VERY appealing to me. thanksWDRacing wrote:Its easy, remove intank fuel pump, buy MSD external fuel pump for $100, fill up with E85. Run 370's with a stock ecu in NA form, add bigger injectors and a controller with boost. No timing retard needed since it's 104 octane at the minimum.
Hows that?
I'm going to see how high the 255 can flow with E85. im at 22psi already but my act xtreme clutch is slipping real bad it cant handle 430+ wtq ( i am throwing a rb20 flywheel and jwt 350z clutch in tomorrow so i am going to see what it takes to max this pump out. then i got a supra pump i am going to throw in (290lph)crzycav86 wrote:
walbro 255 might flow enough for 500hp with gasoline, but e85 is not gasoline. e85 kat's require more fuel than gasoline for the same power numbers.
If you want to tune a lot of cars and fast ones, get a microphone and head set knock guard.The only way to be 100%, many electronic knock devices miss the small and dangerous detonations.GTR PrYdE wrote:what do yall use to read knock?
Thats true Mike, except with the J&S he uses an actual sonar type device so it works a little bit differently, it basically detects it before it even happens.Swedish Mike wrote:
If you want to tune a lot of cars and fast ones, get a microphone and head set knock guard.The only way to be 100%, many electronic knock devices miss the small and dangerous detonations.
The only downside is that you only use it for tuning, not mounted in the car.
Never heard of it but sounds like a nice piece. Probably detect the knocks at early stage, you can hear the same thing in the headset type, you hear them build up and can stop them before it happens.S13FX wrote:Thats true Mike, except with the J&S he uses an actual sonar type device so it works a little bit differently, it basically detects it before it even happens.
I know sounds kinda weird but it works.
Cool, I got to read more about this. Never heard the word sonar before.S13FX wrote:It has a built in MAP sensor. So it senses boost also. You can set a preset boost level to retard the timing at, and it has the knock sensing timing retard also. So you can run different retard amounts at different boost levels.It also uses a sonar type sensor to detect knock before it even happens.
Thats just a little bit from the description. I read somewhere that the guy that invented this used to be some sort of a sonar tech in th Air Force.
and maybe some dyno numbers?sstomek wrote:anyone running on e85 with their own tune willing to post it up along with a description of what you changed?
well in new GM cars that are flex fuel, they are already tuned for both fuels, and you can have any blend of gas and e85. in our cars, converted for e85- you can only have one fuel or the other- not much of a blend. megasquirt has a GM sensor to use different blends, making a megasquirt tuned car "flex fuel"240sxmech wrote:Great post by the way . So maybe someone can answer my questions, I have an 06 chevy silverado crew cab that is pump gas and e-85 compatable.Now if i fill up with e-85 i dont have to change anything or hit any switches i can just add it when ever, empty tank ,half full tank it doesnt matter.So why are you guys saying you have to change your tune for the e-85 or get bigger injectors when i dont have to do anything to mine. Mine runs on the same tune and the same injectors. Please elabarate on this,not sure about the spelling of that word. Thanx
The question is, why would you want to. It's only cost effective when used as race fuel - it offers no other advantage except making a handfull of people rich and allowing the auto makers to circumvent the CAFE standards and produce gas guzzling SUVs.240sxmech wrote:Great post by the way . So maybe someone can answer my questions, I have an 06 chevy silverado crew cab that is pump gas and e-85 compatable.Now if i fill up with e-85 i dont have to change anything or hit any switches i can just add it when ever, empty tank ,half full tank it doesnt matter.So why are you guys saying you have to change your tune for the e-85 or get bigger injectors when i dont have to do anything to mine. Mine runs on the same tune and the same injectors. Please elabarate on this,not sure about the spelling of that word. Thanx
Well first off, E85 would be a lot nicer for people to use that only run between 7 to 14 psi, and don't really want to worry about TIMING, which seems to be a big issue among a lot of KA-t'ers,Edub1 wrote:
The question is, why would you want to. It's only cost effective when used as race fuel - it offers no other advantage except making a handfull of people rich and allowing the auto makers to circumvent the CAFE standards and produce gas guzzling SUVs.
I learned recently that many people in Mexico can not afford corn tortillas any more because of this ethanol scam. Think of how many food products are made from corn - all of these are doubling in price. It's horrible.
Hey bro...I've defended you when it's come to bringing up various options that have gone against conventional thinking, don't be a hipocrit.Edub1 wrote:
The question is, why would you want to. It's only cost effective when used as race fuel - it offers no other advantage except making a handfull of people rich and allowing the auto makers to circumvent the CAFE standards and produce gas guzzling SUVs.
I learned recently that many people in Mexico can not afford corn tortillas any more because of this ethanol scam. Think of how many food products are made from corn - all of these are doubling in price. It's horrible.