Hey munche, expand the loaded part and take screenshots with the bar at different positions, and then overlay the screenshots if you can. If you can't do that you're better off exporting to excel and taking a screenshot of the spreadsheet.

The graph has no scale marks; it's meant to be navigated through. When he moves that line on the graph the numbers at the top of that line change.

 

I emailed you the excel file of that run.
No I can't expand.

 

That was with out the meth

 

My wife is bugging me that I have spent all night on the car if you want I can send you the data log in both formats. I don't have time right now to cut and paste.

Jeff has the excel file of this run

 

Looks niiice.

314 g/s @ 7800 RPMS and 114 mph. That should be able to spank a Challenger, I think

 

Uh, you don't get it.
Lets say his AF was 12.3:1 (.83 lambda for gas) without the meth (that is what he said it was in the post just before yours).
Now he turns on the meth/H2O (forget the nitro for a minute) and the AF is 12.8:1 (.87 lambda for gas).

What is his actual lambda?

Well, lets say for shots & goggles that he is flowing 35 pounds of air with that SC.
That means that the 12.3:1 AF is 2.8 pounds of gas per minute.
Now, lets say that the nitro/H2O he is injecting is 15% of his liquid volume (at a 40% mix).
So, on top of the 2.8 pounds of gas, he is now injecting about .2 pounds of meth with a stoich ratio of 6.7:1 (compared to gas at 14.7:1).

Do you see where this is going?

This doesn't even take into account the H2O, which is not combustible.
Then there is the nitro which, besides being immiscible and therefore of a indeterminable ratio, has a stoich ratio of 1.7:1.

The long and short - you can't tune for AF when the spray is on. Its meaningless.

 

I didn't receive it.
Try sending it to ap@mazdamaniac (.com)

 

happy birthday Bastage!!!

 

Thanks Shinka! Wow, birthday's almost over, time to go to bed.

 

Happy Birthday and page 100!

PS I have both grey hairs (first on my head when I was about 12!) and a supercharger now..... 8)

 

Thanks man, welcome to the gray haired supercharger owner's club.

 

I think that gray hair is just a result of reading this thread

 

Yeah thanks for creating it PHIL lolololololol

 

i think i qualify for the gray-hair SC club....

 

If you say so, I'll have to believe you - Can't picture you with gray hair. Oh well only her hairdresser knows

 

I just had the 265/35ZR-18 Bridgestone Potenza RE-01R installed all the way around they fit fine with no rubbing

 

Most likely a dumb question (I guess I could search) but what is stock offset? I was looking a new set of rims and was asked that question.

 

50.

beers

 

Phil - im letting the cat outta the bag...i do my roots!! i will never have gray showing..its against my religion

for wheels set up, this is what im running....

with stock shocks and tein s techs:

Volks GT-Fs
19x8.5 +33 245/35/19 toyo T1Rs up front
19X9.5 +36 275/30/19 toyo T1Rs in the rear

with no rubbing

 

Mine are Volk RE30s 18 X 9.5 all the way around they are a 42mm offset

 

???

That's only because you don't push the car.

A 9.5" rim with a +36mm offset is sticking WAAAAY out (and you can tell from your pics that's the case).

A +42mm minimum offset (and a 1.2°+ camber) is needed to keep that tire from rubbing in the back under hard cornering.

I run 275/30 on 9.5" 19s with a +42mm offset (with 1.7° of camber) and they just make it under on track days with lightly rolled arches.
There are still places on the plastic where the tire touches.

 

I'm running the enkei specials (18x9.5 +45) with 275x35s. I clear in the rear by about a paper's thickness. If my lining pops off the clip at the very corner and sticks out maybe 1/8" where you can push on it and it moves just enough so that you know it's not being pulled back by the clip, it hits the tire and wears through. I'm not sure how much camber I'm running as it was already enough to clear the tires.

On the nitromethane lambda discussion - did you change your tune between mixtures anticipating the added fuel or did you just have varying conditions that produced the different AFRs? I've read threads on other boards of people running a lot of methanol injection as a supplemental fuel source but the AFRs they shoot for are a weighted averaged based on what they run and generally way south of 12. Hmmmm. If you ran out of meth, that 12.8 might get up over 13.

 

The last run I did was with out the methanol and it was 12.3 I posted the screen shot. I disconnected the pump made sure the tank was empty and did some runs to make sure no meth was left in the system.

 

you have to admit......they do look HAWT!!!
and granted, i dont track my car but i do push it from time to time on twisties etc
havent had a problem yet...

 

Bah - disregard me. I'm making arrangements to pick up my car so most of my good brain cells are doing hamster wheel sprints. All I have left are the crappy brain cells I use for work.