Drag/Acceleration The Official 1/4 mile track thread.

[DaBears4Lyfe]

Updated GetStungs Mod list to include WMI

 

[Get Stung]

lol thats a big mod you forgot to list in your mod list. That changes everything that has been said

Well I never went through the list. And is it a big mod?last 2 runs heat of the day NO METH. You just put up the list I had a look over and saw it wasnt there. So I told you. You Cmon. Now back to my original? Is it a Big mod? 12 one hundredths after a 15 to 20 degree temp swing.

 

[DaBears4Lyfe]

Well I never went through the list. And is it a big mod?View attachment 22835last 2 runs heat of the day NO METH. You just put up the list I had a look over and saw it wasnt there. So I told you. You Cmon. Now back to my original? Is it a Big mod? 12 one hundredths after a 15 to 20 degree temp swing.

Meth keeps the IATs lowered allowing higher boost/octane. I dont think I hit 12.15 without meth.

 

[Get Stung]

Meth keeps the IATs lowered allowing higher boost/octane. I dont think I hit 12.15 without meth.

I went to the track with 2 plans
A meth
B enough octane to run map 5 no meth
I'm not sure there was a difference.

 

[Get Stung]

iats are what they are pre race without intercooler, meth doesnt cool until you run and only at wide open throttle. That said I saw iats drop 5-6 degrees during run but what part of that is just air pouring through the engine bay?
edit meth dropped 40 degrees no meth 11 degrees.

 

[Tonkabob]

Right but 185 lbs isnt dropping .15 seconds Tonka... come on. If thats the case pull your back seat and passenger seat and you may have an 11.5 second pass with 120+ MPH trap.

1/4 mile calculator says if I dropped my car from 4300 to 4115 my ET drops by .17.
I don't think my seats weigh 185 lbs. Fronts could be heavy with the electric motors and cooling system.

 

[DaBears4Lyfe]

I went to the track with 2 plans
A meth
B enough octane to run map 5 no meth
I'm not sure there was a difference.

I dont think you will net much difference if you run map 7 with a solid E85 mixture (as it cools as well) vs map8

 

[Get Stung]

Had a peek at logs,
map 8 meth iats 132 pre 93 after
map 5 no meth 134 pre 123 after

 

[DaBears4Lyfe]

1/4 mile calculator says if I dropped my car from 4300 to 4115 my ET drops by .17.
I don't think my seats weigh 185 lbs. Fronts could be heavy with the electric motors and cooling system.

Rears were weighed by someone at 85 lbs im assuming the fronts weigh close to 60 with everything. so that 145 remove the spare and you are right there!

do you really use a 1/4 calculator. You know those things have been myth busted by a ton of different communities. IT all depends on weight distribution and where the weight is removed. me being RWD if I removed 200 lbs from the rear i bet it does a lot worse than good. You guys being AWD unless you are removing weight from the front or substantial weight i dont think it does much.

 

[Tonkabob]

iats are what they are pre race without intercooler, meth doesnt cool until you run and only at wide open throttle. That said I saw iats drop 5-6 degrees during run but what part of that is just air pouring through the engine bay?
edit meth dropped 40 degrees no meth 11 degrees.

Terry says Meth is good for about 30 HP and Lap3 says 40-50HP. (Lap 3 has dynos of their ECU tune at 440-450 and ECU tune with Meth at 480-490 HP)
Both Meth and Ethanol also make more HP than gas, but since you were already running E30 your meth benefit was much smaller. Terry says E50 is equal to running WMI.
But surprised the IATs didn't drop more. My 11.87 run my starting IATs was 140 and 118 at the finish.

 

[DaBears4Lyfe]

Terry says Meth is good for about 30 HP and Lap3 says 40-50HP. (Lap 3 has dynos of their ECU tune at 440-450 and ECU tune with Meth at 480-490 HP)
Both Meth and Ethanol also make more HP than gas, but since you were already running E30 your meth benefit was much smaller. Terry says E50 is equal to running WMI.
But surprised the IATs didn't drop more. My 11.87 run my starting IATs was 140 and 118 at the finish.

E50 is equal to running WMI in what sense? Ethanol cools but no where near a 50/50 mixture of methanol.

 

[Get Stung]

I'm not seeing 30hp, I'm just not. Next out I'll run a map 5 back to back with map 8 wmi.

 

[Tonkabob]

Rears were weighed by someone at 85 lbs im assuming the fronts weigh close to 60 with everything. so that 145 remove the spare and you are right there!

do you really use a 1/4 calculator. You know those things have been myth busted by a ton of different communities. IT all depends on weight distribution and where the weight is removed. me being RWD if I removed 200 lbs from the rear i bet it does a lot worse than good. You guys being AWD unless you are removing weight from the front or substantial weight i dont think it does much.

The weight location doesn't matter if you still have full traction like most do with the AWDs.
I've taken the back seats out to apply sound deadening and they are less than 40 lbs total. The larger seat back is heavy, maybe 25, but the smaller seatback and bench are super light. Hey I heard if you remove the back and front seat its 600 lbs! Kidding, Corvette joke....
Sure 1/4 calculators are approximate between different cars due to gear rations and power bands but on the same car its just math.
Newton figured this out a long time ago.
Newton’s law can be represented by the equation Fnet = m x a, where Fnet is the total force acting on the object, m is the object’s mass, and a is the acceleration of the object.
And for our scenario we would use Fnet/m = a

 

[DaBears4Lyfe]

The weight location doesn't matter if you still have full traction like most do with the AWDs.
I've taken the back seats out to apply sound deadening and they are less than 40 lbs total. The larger seat back is heavy, maybe 25, but the smaller seatback and bench are super light. Hey I heard if you remove the back and front seat its 600 lbs! Kidding, Corvette joke....
Sure 1/4 calculators are approximate between different cars due to gear rations and power bands but on the same car its just math.
Newton figured this out a long time ago.
Newton’s law can be represented by the equation Fnet = m x a, where Fnet is the total force acting on the object, m is the object’s mass, and a is the acceleration of the object.
And for our scenario we would use Fnet/m = a

Weight distribution on an AWD car matters due to the the way the drive train operates. If you take 150 lbs out of the engine bay then do the same in the cab and again in the rear you should net all different results.

 

[DaBears4Lyfe]

Also, you can tell me im wrong tonka. Im going off assumptions not proof in this car.

 

[Tonkabob]

E50 is equal to running WMI in what sense? Ethanol cools but no where near a 50/50 mixture of methanol.

Power wise. E50 will add the same power as gas and WMI. (Per Terry) Ethanol also cools and adds power and octane so running wmi on top of that has a reduced effect.

 

[Tonkabob]

Had a peek at logs,
map 8 meth iats 132 pre 93 after
map 5 no meth 134 pre 123 after

Good info:
WMI 40 degree drop
UP Fmic 20 degree drop
Stock fmic 10 degree drop

 

[Terry@BMS]

WMI is good for 0hp in some situations and up to 40hp in others. It depends on the octane being used, the weather, etc. The lower your octane and the warmer it is, the more of a difference WMI is going to make. If you're already maxing out timing on E30 and weather isn't too bad. Gains will be minimal maybe 10hp.

I've shared same day dragy runs on E30 at 119mph and E30+WMI at 120mph.

 

[Tonkabob]

E30 vs E0 + booster is probably 10-15 hp higher agree?

 

[Kato_the_kia_stinger]

I find it unnerving when people speculate and/or recalculate in their mind about weight reduction. Either reduce the weight, or own the weight.