[OpenFlash]

+1
Leaded race gas is worse on cats than it is on o2 sensors. I've run over 50 gallons of leaded gas in the last 70k miles. No o2 sensor issues worth mentioning. But definitely not something you want to run on a daily basis. But 5 gallons here and there on weekends (for drag racing) is fine.

Shiv

[infinitekidM2C]

OK. I'm about to go Catless via Macht Schnell (thanks onefastman) so that's good to know.

[Jeff@TopGearSolutions]

Originally Posted by Ilma

That's Fairy dust......

My bad.... thank you.

[onefastman]

Originally Posted by infinitekid2002

OK. I'm about to go Catless via Macht Schnell (thanks onefastman) so that's good to know.

Not a problem sir


I check them every now and then while I have the car up.
I run 2.5 gallons every week at the strip ($20 worth)

I am also catless

[hun77777]

Originally Posted by shiv@vishnu

+1
Leaded race gas is worse on cats than it is on o2 sensors. I've run over 50 gallons of leaded gas in the last 70k miles. No o2 sensor issues worth mentioning. But definitely not something you want to run on a daily basis. But 5 gallons here and there on weekends (for drag racing) is fine.

Shiv

+2 no on leaded gas. i think pure 100 is more than enough. people mixing 109/110 leaded gas with pump gas which makes it little over 100 always get me wonder why they just go with pure 100 octane gas from the first place...

[onefastman]

Originally Posted by stealth-twntrbo

My PSI limit was at 16 but in my logs i was seeing around 15.6 with ignition correction at 0. This car was pulling like a monster about 65 degrees outside cloudy no sun.


Leaded race fuel is really tough on cars with Cats, I am catless and its not nearly as bad on the o2's. I ran 25 30 tanks of race gas in my Stealth TT and the wideband sesnors looked fine, i Checked them occasionally and they weren't corroded like that.

I really need an upgraded IC i know it will make the world of difference.

You are crazy to be boosting 16psi w/o a fmic. The turbos are working far too hard.


Also WTF is up with the 65F temps???
The past few days in stl its been 100F, you are fortunate to have cool running temps

[OpenFlash]

Originally Posted by hun77777

+2 no on leaded gas. i think pure 100 is more than enough. people mixing 109/110 leaded gas with pump gas which makes it little over 100 always get me wonder why they just go with pure 100 octane gas from the first place...

Leaded gas useful when you are going for MAX power. ie, setting drag records/serious racing. Using 110oct leaded provides a sizeable advantage over running even the best unleaded race gas (like Sunoco 104). This is assuming that your tune an take advantage of it which the Procede can.

Shiv

[onefastman]

So can the jb3 12.11 @118.5 with a 2.0 60' but I would really like to see what a similarly modded car would do.

[hun77777]

Originally Posted by shiv@vishnu

Leaded gas useful when you are going for MAX power. ie, setting drag records/serious racing. Using 110oct leaded provides a sizeable advantage over running even the best unleaded race gas (like Sunoco 104). This is assuming that your tune an take advantage of it which the Procede can.

Shiv

yes what u said above make sense if it is 110 oct indeed. but i've seen people mixing 110oct with pump gas which caculated down to around 100ish oct then i scratch my head a little bit...

[rbaldwin28]

I am able to get 100 from the pump so I can go fill my tank with it and run wild for a week. $8.99/gal hurts the wallet though. I have cats so i am not interested in leaded.

[infinitekidM2C]

Fill up your gas tank with 100 octane? Who do you think you are Saudi Royalty? j/k

[onefastman]

No thats about a fair statement, for the price of a few tanks you could get a meth kit

[rbaldwin28]

Originally Posted by hun77777

+2 no on leaded gas. i think pure 100 is more than enough. people mixing 109/110 leaded gas with pump gas which makes it little over 100 always get me wonder why they just go with pure 100 octane gas from the first place...

I depends on the mix. Even if you put 100oct in and you have a half tank of 91oct it will bring you to 95 or 96. I try and get under 20 miles left in the tank or less and then go fill up a half tank or so of 100 instead of mixing. Makes a big difference with my car.

[onefastman]

I drive to the track after it shows 0 till empty and drive around the lot untill it dies

[rbaldwin28]

Originally Posted by infinitekid2002

Fill up your gas tank with 100 octane? Who do you think you are Saudi Royalty? j/k

What, you mean your not? I save all my recycling for about 3 months and then I trade it in for a tank of 100.

[rbaldwin28]

Originally Posted by onefastman

I drive to the track after it shows 0 till empty and drive around the lot untill it dies

I though about doing this too until I read that thing in the owners manual about engine damage if you run the car until it stops.

[onefastman]

I dont do it often, just the last few times when I was shooting for 11's. Typically I wait till 0miles left and then frive to the track (15 miles) and put a 2.5 gallons of 110 in or 100 if im not out to beat my personal best

[BrianMN]

Some more food for thought regarding leaded gas:

I believe one of the key advantages of Leaded fuel is the lead acts as a lubricant. SO, how would that affect the carbon buil up on the intake ports/valves? Would the lead get stuck on and add a layer, or would the lead help to clean it off?


Edit: That was a totally ridiculously dumb thing to say...I'm embarrassed.

[rbaldwin28]

Originally Posted by BrianMN

Some more food for thought regarding leaded gas:

I believe one of the key advantages of Leaded fuel is the lead acts as a lubricant. SO, how would that affect the carbon buil up on the intake ports/valves? Would the lead get stuck on and add a layer, or would the lead help to clean it off?

Neither since we are Direct Injected. Unless you are talking about the blow-by containing lead and keeping the oil from sticking to the intake and valves. I don't know for sure but it seems like the build up you get on cat converters and 02 censors would be the same on the intake side. This also raises some questions about what the lead will do to your oil since I have read DI motors tend to have more blow-by.

[hun77777]

Originally Posted by rbaldwin28

I depends on the mix. Even if you put 100oct in and you have a half tank of 91oct it will bring you to 95 or 96. I try and get under 20 miles left in the tank or less and then go fill up a half tank or so of 100 instead of mixing. Makes a big difference with my car.

that's exactly how i use 100 oct too but what i was refering is some people mixing 109/110 with qtr tank of 91/93 making it around 100 oct which makes no sense to me... get it?

[rbaldwin28]

Originally Posted by hun77777

that's exactly how i use 100 oct too but what i was refering is some people mixing 109/110 with qtr tank of 91/93 making it around 100 oct which makes no sense to me... get it?

Yea, got it. Maybe these people have little or no understanding of math or have not seen the mixing table provided by the fuel maker. Maybe you could inform them.

[maui86]

Originally Posted by rbaldwin28

Yea, got it. Maybe these people have little or no understanding of math or have not seen the mixing table provided by the fuel maker. Maybe you could inform them.

if i had an 100oct pump i'd totally just fill up with straight 100oct, but unfortunately i can only buy 5gal drums of vpracing 100oct@$20/gal!!!!

another supplier distributes only leaded race gas(110-116)@$10/gal.

so if my target octane is only 100oct then i could just buy 5gallons of 116oct and add it to 5gallons of 92oct and turn it into 10gallons of 104oct for a weekend of fun(if i did the formula right). granted its leaded, but i refuse to spend $100 for just 5gallons of 100oct.

thats the only reason why i'd mix leaded gas.

teri