110 Leaded Race Fuel????

[MinnesotaMuscle]

<!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> <v:stroke joinstyle="miter"/> <v:formulas> <v:f eqn="if lineDrawn pixelLineWidth 0"/> <v:f eqn="sum @0 1 0"/> <v:f eqn="sum 0 0 @1"/> <v:f eqn="prod @2 1 2"/> <v:f eqn="prod @3 21600 pixelWidth"/> <v:f eqn="prod @3 21600 pixelHeight"/> <v:f eqn="sum @0 0 1"/> <v:f eqn="prod @6 1 2"/> <v:f eqn="prod @7 21600 pixelWidth"/> <v:f eqn="sum @8 21600 0"/> <v:f eqn="prod @7 21600 pixelHeight"/> <v:f eqn="sum @10 21600 0"/> </v:formulas> <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"/> <o:lock v:ext="edit" aspectratio="t"/> </v:shapetype><v:shape id="_x0000_i1025" type="#_x0000_t75" alt="" style='width:12pt; height:12pt'> <v:imagedata src="file:///C:\DOCUME~1\Chris\LOCALS~1\Tem p\msohtml1\01\clip_image001.gi f" o:href="http://www.mercurymarauder.net/forums/images/smilies/eek.gif"/> </v:shape><![endif]--><!--[if !vml]-->Ok, just wondering what the general consensus is on running this stuff in our cars? My '03 black MM is stock, how much is too much? I drove past the pump tonight and I think it was something like $5.99 a gallon!:eek: so at what octane level do our cars top out as far as being worth it?????

[Local Boy]

Since your'e stock...don't waste your money

We want a higher octane level in order to run more advance in the timming...This adds hp

Now you can get a tune for your car , through one of our vendors, that can re-program your computer to run on 110 octane...That would be a blast...assuming you had other Mods. to take advantage of 110 oct*

Some guys are using 110 already...I'm sure they will chime in...

In short...If you are stock...you will get no advantage...

The tune I got came with a 93 octane tune...Ran it for a little while, using 92 octane ( that's all we have here in the islands)......It ran strong...then decided to bring it down to the 91 octane tune, just for safe keeping...and avoid "ping"...

ALOHA

[Breadfan]

Leaded fuel will ruin your cats

[MinnesotaMuscle]

hmmmmm interesting........

[Leadfoot281]

Leaded fuel will ruin your cats

+1. And it'll foul O2 sensors.

I'm still waiting for an E-85 tune. You must have that stuff available where you're at. It's about $2/gallon here and it's 105 octane.

[MinnesotaMuscle]

Yep we have the E85....I grumble every time I fill up around $3 a gallon while the turd with the hybrid is paying like you say around $2 a gallon.......

[cyclopsram]

All new CVPI are 87 octane and E85 compatible..ya baby....

[Breadfan]

From what I hear E85 is great in it's higher octane level, but it's less explosive nature (and thus higher octane level) mean that for many cars you will use 15-20% more fuel, so mileage will drop.

I don't see E85 around here, or just haven't noticed it, but if it's only about $2/gal then it sounds like the cost makes up for the lower mileage.

And yeah, the higher octane is making hot rodders take notice. :)

[Richy04]

Fleets mostly run e-85, and some of us "hybrid turds" cant run it.:)

Mine was made too early for e-85..

[MarauderSM]

With e-85 you can run more boost with a supercharger, turbo, or NO2. Breadfan I did a search and although there are not any E-85 stations around here they are suppose to be popping up soon. I think a gas station out Rockville sells it.

[MarauderSM]

Any way what would you need to do that type of conversion. I seen places say that you need larger fuel injectors, a new MAF, and an added computer. Is this what you need and do you know a good company to get the kit from.

[sabtaj1]

Well, If I remember right the e-85 is more corrosive than regular gas. SO I would say that an e-85 tune may work but who knows how long the parts will last. I dont plan on messing with that stuff at all. But with the bottle I have been trying 1/4 tank of 93 mixed with 110. I think the straight 110 would be to much and hurt the performance. Just my 2cents. Please correct me if I am wrong on either. Thanks

[MinnesotaMuscle]

Well I went up, had 5 gallons of 92 in the tank and added 4 gallons of 110. I noticed alittle diffrence on the street but in my opinion, it wasn't worth it....good to know though.....dang if I could just talk the little wifey to let me put in gears in it.....

[Leadfoot281]

There were a couple of C6 Vettes at the Car Craft show in St Paul this summer that ran on E-85. I don't remember the exact numbers but they had over 600hp and got 24mpg (27 on pump gas IIRC).

I sure regret not speaking with the owners and finding what size injectors they used. One thing is for certain though, An injector that's sized to run E-85 in a blown 5.7 liter Vette ought to be plenty big for a Marauder.

The OEM's are building cars than run E-85. They obviously must know how to keep cars reliable on the it. Heck, they can run either pump gas or E-85 so they also know how to build a computor/fuel system that can adjust to it.

Where is the after-market on this? :confused:

[Breadfan]

Where is the after-market on this? :confused:

Sounds like some openings in it. I get Car Craft and they have been talking E85 for over a year. Probably not too hard to pick injectors for it, for a stock car stock injectors would probably do the trick, it'd be in the tune.

I know Brazil is using ethanol based on sugar, whereas E85 is based on corn and is 85% ethanol. The stuff in brazil is, as far as I know, near or at 100% sugar ethanol.

Their flex fuel cars will run on either, but due to the high octane of the ethanol they have a small 1-2gal tank under the hood to hold regular gasoline for running the car the first minute or so during cold weather.

My guess is that E85 has enough regular fuel in it (15% by my math) that it doesn't suffer from this condition in flex fuel cars. Unless our flex fuels have the same feature.

At anyrate, it hints that 100% ethanol has even more octane potential. Yup more fuel needing to get the same "boom" but will allow for higher compression, heat, and cylinder pressures giving some good power potential.

[larryo340]

Well I went up, had 5 gallons of 92 in the tank and added 4 gallons of 110. I noticed alittle diffrence on the street but in my opinion, it wasn't worth it....good to know though.....dang if I could just talk the little wifey to let me put in gears in it.....
I wouldn't use it again, or you may be buying cats soon. You have to have a serious N/A motor to need 110 octane. Save your money. Now cars with extra help in the air intake department it should work nicely.
I've got a friend with a crazy street driven Chevelle that with 93 octane (plus a little nitrous), DOT tires has run a best of 9.04 at 155 MPH.

[Breadfan]

Well I went up, had 5 gallons of 92 in the tank and added 4 gallons of 110. I noticed alittle diffrence on the street but in my opinion, it wasn't worth it....good to know though.....dang if I could just talk the little wifey to let me put in gears in it.....

Thanks for the update. I would say without a tune you won't see much power increase over 93 octane. Since "premium" fuels vary state to state from 91 to 93 octane, the stock tune is probably tuned to 91 octane. Running 93 may loosen up the knock sensors a bit and allow the computer to dish out a bit more timing.

But there will be a limit, and with the stock tune more octane will only hurt performance rather than help it.

Now, if you had a multi-position tune chip, you could switch between a few tunes with the flick of a switch. Lidio at Alternative Auto has set some of these up for a number of folks here. You can have a standard premium fuel tune (91 or 93 octane), a safeguard tune (in case you get bad gas, a low octane safe-tune), and a race gas tune (104 unleaded). With the race gas tune you will be able to take advantage of the extra octane and see a performance gain.

Without a race gas tune, you'll only be feeding the motor very "safe" gas, as in safe from detonation, but the power potential isn't there with a stock tune.

[Mike M]

I use a 1/2 tank of 100 octane and a 1/2 tank of 91 (91 is the highest out here in AZ). It will not hurt your cats or O2 since it is unleaded.
If your car is stock don't bother, go get a chip.

[RF Overlord]

I wouldn't use it again, or you may be buying cats soon. You have to have a serious N/A motor to need 110 octane.Agreed. Increased octane isn't going to give you any more power unless you have a higher compression ratio, power adder, or have a detonation problem where the knock sensor is pulling back the timing. Plus, it takes VERY LITTLE lead to ruin a set of cats and O2 sensors.


if I could just talk the little wifey to let me put in gears in it.....Changing to 4.10s will make a much bigger difference than using that gas would have, and you only have to pay for them once. Using that gas would have quickly run up the tab far higher than the cost of the gears.

[Breadfan]

Also if you are still on a stock tune, look to get an aftermarket tune. I'd do that before gears if you can't do both at the same time. The tuner will be there for when you do gears.

But, a tune will also have a much larger impact on the overall feel and driveability of the car than increased octane fuel. You can get a tune tailored to the octane you plan to run daily.

Agreed with the others too, I wouldn't experiment anymore with the leaded fuel.

[MarauderSM]

You shouldn't use it because it is leaded and will make you buy new cats. A tune would be the way to go at it after swapping the exhaust.