What is everyone using for fuel in the PG Turbos

[dodes001]

Im wondering what everyone is running for fuel in their pump gas turbos.. Im riding at about 6500 feet, and running 100% avgas at 7 lbs, and Im finding my throttle response is pathetic... Im going to try running 70% 94 octane and 30% avgas and see if that helps..?? But just looking for suggestions from anyone with a turbo...

And Im also hoping the new fuel will help my turbo lag... Turbo sure seems like it takes a long time to spool up, but when it does spool it goes good.. But bottom end on throttle is not too impressive

 

[mynewuseddoo]

I'm running 100% av in my cpc stage 2 @ +/-6500 feet also. I'm running at 9 psi boost and my throttle response is awesome. When I was tuning it in, I found running too much fuel pressure would hurt the bottom end greatly. I reduced the fuel pressure and re-tuned the box and it crisped the bottom end right up. Clutching set up is also another factor too.

 

[Coxy]

I'm going to be running chevron 94 at 6.5 or 7 I hope, may buck up for a barrel of 110 to mix later on, we shall see

 

[Dano702]

Post what kit you are running, that will help. I have a Twisted rg 8 an I have run 10 lbs on straight av at 5000 feet.And 5lbs on straight 91 . I think you have way to much octane. Straight 91 non ethanol and a gallon of av sounds about right. Try one gallon Sunoco supreme and 91 .

It all depends on what kit? My throttle response is about 3 times as quick as a stocker on the bottom.

 

[dodes001]

Hey Dano702,

I have the Boondocker 5A227801 pump gas kit installed.

So your saying to run Chevron's 94 octane with a gallon or so of avgas in it, and give that a try?

 

[Dano702]

Hey Dano702,

I have the Boondocker 5A227801 pump gas kit installed.

So your saying to run Chevron's 94 octane with a gallon or so of avgas in it, and give that a try?

I don't know anything about poonbogers. What year sled? Did you do any head work?

I have an 07 M8 and the head has been cut. If you have 10 with a stock head that is alot different than 09 stock. This is a M8?

 

[dodes001]

ya it's an 09 m8, no head work done, just the boondocker turbo installed...

 

[jakey-boy]

BD pump gas guys I ride with have the best luck with non ethanol 91 if you can get it and 1-2 ish gallons of Sunoco 110-112... That is for about 6-10k feet.

The race fuel is really just to compensate for the occasional batch of bad gas you might get if you are keeping the boost below 7-8 lbs...

 

[popcorn]

BD pump gas guys I ride with have the best luck with non ethanol 91 if you can get it and 1-2 ish gallons of Sunoco 110-112... That is for about 6-10k feet.

The race fuel is really just to compensate for the occasional batch of bad gas you might get if you are keeping the boost below 7-8 lbs...

Do they use leaded race fuel or unleaded for their 1-2 gallons? is it bad to use a leaded fuel?

 

[jakey-boy]

Yes I'm pretty sure it is leaded. Biggest downside I know of to leaded is it is hard on A/F sensors and the pipe temp sensor... I'm sure someone else can chime in with a lot more knowledge on the good and bad of them.

 

[SledderX]

Im running a 2010 m8 boondocker pump gas kit with 09 head. 8.5 pounds boost. Straight vp 111. Rather be safe than sorry. Throttle response is good.

 

[shawkins]

OVS Garrett pump gas kit non intercooled on a 2009 m8 stock head. 9psi mixing 1 gallon TT111 leaded race gas to 4 gallons 91 pump gas. Great throttle response @ 35 psi fuel pressure.

 

[hatchers]

m8
2871
10 gallons of 91 and 1.5 of less qts of boost juice
12.5ish psi
12.3 a/f
7-10K elevation

ran her hard all day yesterday, borescoped, no deto

 

[av8er]

09 boony TM901

running 93 at 7-7.5 psi 5-8000, can run 9 psi above 8000

 

[WyoBoy1000]

When was the kit purchased. On a BooneDickers kit you could probably run non-E 91 octane @ 7lbs and be safe if tuned right. If the kit was purchased before the end of last season you should update. My dealer has been running these kits (ADA now EBC kits) for 3 years and I think they may have finally updated enough to have a good pull and go kit. Sunday they where running 50/50 91/114 at 10lbs with no problems and ran strong. BD has a free wiring harness update for pre-EBC kits that seems to be a good fix. But you most likely have a tuning problem, I would call BD or a good dealer and they can get you running.

 

[backcountryislife]

what part of "pump gas" doesn't mean "pump gas"

WHY the F do all you guys WAY over octane your machines????

waste of money & good way to blow HP right out the exhaust.
I'll never get this.

The M8 has a knock sensor...RIGHT??? OR am I just WAY off on how much more octane it takes to go down a couple thousand feet?

If I can get 15 out of 2.5 gallons, at 11k, how is it that someone needs to add a few gallons to just run 7 at 6500???

I think people are getting a little silly with the whole "playing it safe" thing.

go take a can of 112 or whatever out with you at the elevation you ride at, turn it up till you find where the sled starts to det, then you know your limit.

I actually have NEVER had det, even running 10% ethanol 91 at 9.5 psi.

If you LOOOOOVE the smell of race gas so much... go buy a REAL turbo instead of that sally PG toy!!! (yeah, like the one I'm about to buy...?)

 

[glassman]

Pump gas kits are designed to run on pump gas. Your throttle response is a fueling issue, not an octane issue. The bottom end fueling is very critical for crisp throttle response.

 

[jakey-boy]

The only reason I see for running any race gas in a pump gas is just the fact that you get bad gas these days. Especially if you ever get ethanol fuel, once your sled sits for 3 weeks that fuel has already started breaking down. No need for 50/50 or straight av gas or anything like that but when you are talking about a 4000+ engine and turbo setup that you risk taking out with bad fuel I think its worth it to run a gallon or 2... But some places we ride we start out below 5000 feet and end up at 10+ so its taking off from the truck is the only time that worries me.

I must add though that higher octane fuel is not going to improve your bottom end. If anything it will make it worse to be over-octaned.

 

[Sparx]

I would agree not to run too much octane. I'm thinking there may be more to his problem than just octane alone. I think there may be multiple problems factoring this issue including clutching.

I'm running 10lbs boost 2-7000ft with 100LL. Gotta take it easy at 2000ft or I could set off the DET sensor there, took a fair bit to set it off as well. Shouldn't be an issue from the truck up, just don't run it hard on boost, stay under half throttle.

I did run the first two days on straight race since I was paranoid with the new setup but am confident I could even push it up to 12lbs no problem at 6-7000ft with the AV gas. My OVS race gas setup runs great either on straight race or AV gas with no adjustments necessary, just cheaper obviously by half the price to run AV gas.

 

[Coxy]

Tuned in nice on 94 chevron still, 12.3-7 afr, 6.5psi 6-7000 feet, and pulls awesome.