Ok. Last time out at the track(1/8th mile) i was trapping consistant 90-91mph. This was on 2 gal c16 mixed with 2 gal 93.

NOW, i have since added an alky kit(along with V3). I went last night and could not trap more than 88mph for the life of me. I have not tuned the car on the alky, i basically just ran my same map i ran on the race gas mix, but instead of race gas, i used alky.

I tinkered with the maps last night in between runs, but couldn't manage to gain any MPH. YOu guys that added alky, did you have to pull a large amount a fuel out when you were spraying alky?

Im guessing a couple things here: Either the car was knocking and pulling timing running this map, OR the car couldn't burn all the fuel+alky efficiently.

What do you guys think? Any help would be appreciated!

BTW, for the last 2 pulls i dumped ~3 gals of 110 in with my ~5 gals of 93....nothing changed! So im thinking it wasn't pulling timing badly.

 

How much alchy and what mixture of it are you injecting?

I tend to spay 10% of my overall fuel as 50/50 alchy/distilled water. You do have to pull some fuel out but its not a 1 for one relationship.

Odds are you are running super rich right now. Try running without race gas.....but with a race gas map.

 

Try turning up the boost... Alky won't help anything on pump gas and a pump gas map besides make for 0 knock. If you want the power from alky, turn up my boost (24-25psi) or get it tuned.

 

OK, maybe i wasn't very clear.

I am running my race gas map on pump gas and alky. I am running 25-26psi. Zeroed out xede timing table on what was my race tune fuel table.

My question pretty much is, if you guys had to pull out MORE fuel when you spray alky. As in, if you had a 11.3/1 AFR before you sprayed alky....do you need to pull out a good bit of fuel to keep the AFR at around the same. OR, is the AFR supposed to be substantially richer when spraying alky?

btw, im spraying 100% alcohol.

 

You'll need to back out a lot of fuel from the base fuel/maf table when running meth. How much depends on the size of the jets. As for AFR, you'll need to get it into the mid to high 11s before it makes max power. If you go too rich, power just takes a dump.

Shiv

 

well, my AFR was tuned to just over 11/1 on the map im using with 110/93 mix. I am runnning the EXACT same map as that mix on the alky/93 mix.

So, all else being the same, i need to pull out quite a bit of fuel from the fuel table eh. Good to know!

Thanks

 

I am running the same SMC kit it was tune with xede and big turbo.I am sure Andrew
pulled a bunch of fuel. I run 2 maps 93 oct 93 oct with meth to make a long story
short ,forgot to turn off meth, switched to93 map went to pass car on the way to
work I could feel the difference .You really need to be tuned for meth if you want
to make power.

 

If you ran a 11:1 afr without meth and you didn't change the map and simply added meth, your afrs are probably richer than 10:1. Way too rich.

Shiv

 

do you happen to have a meth tuned stock turbo car's fuel table in front of you anywhere shiv? I would just like to see an example of how much fuel is taken out on a meth tune. I just need an approximation to see how far away i am!

Thanks

 

any chance you could post your 2 maps so i can look at them? if you don't want to post, could you email them to me at gsujeff55@gmail.com ??

i just wanna see the comparo of your 93 map and your 93+meth map!

Thanks

 

The amount of fuel that must be yanked out from the base fuel table is dependant upon the size of the jet and the pressure of the pump. So there's really no map that I can show that would give you a good idea of what YOUR system needs. But don't be surprised if you have to pull out 4 or more points of fuel. You'll need a wideband to dial it in correctly though..

Shiv

 

Like Shiv said different set ups if you would like I will try to send them tomorrow.
I have 880 inj with a gt35. If you still want them pm me.

 

well, i pulled out 4 points of fuel last night and didn't really see an increase in trap. keep in mind, im not running a base 93 octane fuel map, im running a race fuel map. so i am offsetting a race gas fuel tune. also, im running standard SMC alky kit.

should i have any values in my fuel threshold map if im not running smart?

 

Up the boost or add in some timing......with alchy you should be able to get 3 more degrees out of the car unless you add more boost.

 

more timing than a c16 map? remember, im not talking about over just a pump gas map....this was a race fuel map i was running.

i can understand 3 more degrees of timing over a regular 93 map...but 3 more than c-16 map? also, doesn't the xede go "whacky" if you go over 0 in the timing table at high loads?

again, im running 26psi with the timing table zeroed out.