Tuning for Meth: more or less gas?

Willow · 06-27-2006

I've spoken with a couple of tuners (mine included) who agree that when tuning for meth, you should turn down the gas with some sort of proportion to the meth. I've heard some folks say just juice the gas up and then add meth. The tuners have had consistent results and gains doing it their way.

I'm curious to know why juice the gas up and then add meth?

Willow · 06-27-2006

Nobody?

dvldoc · 06-27-2006

I'm not sure who says add fuel then meth, because that is dead wrong, Leaner is meaner period. You need to pull fuel and add methanol. You need to get your AF ratios to were you make the most power. A real tuner would know this, running pig rich will make you slower. If you have a map clamp or like us GM vehicles use a AFC to tune our fuel then you will be able to get your vehicle the way you want if you have a means to scan the vehicle with a scan tool such as a autotap or LS1M ect.

A wideband is the best means to tune if you can afford one it is defiently nice to have. You can get a dyno tune at many shops that can do this for you.

Willow · 06-30-2006

Quote:

Originally Posted by dvldoc @ Tue Jun 27, 2006 8:17 pm

I'm not sure who says add fuel then meth, because that is dead wrong, Leaner is meaner period. You need to pull fuel and add methanol. You need to get your AF ratios to were you make the most power. A real tuner would know this, running pig rich will make you slower. If you have a map clamp or like us GM vehicles use a AFC to tune our fuel then you will be able to get your vehicle the way you want if you have a means to scan the vehicle with a scan tool such as a autotap or LS1M ect.

A wideband is the best means to tune if you can afford one it is defiently nice to have. You can get a dyno tune at many shops that can do this for you.

Yeah that's why I went with my tuner, he's been tuning meth awhle. I've just read some posts here and there where people say add fuel if you begin to bog, and I was like wtf. So far so good, got great results with the kit! No KR, added some timing. I can get even more added, just haven't done so yet--need to order larger nozzle from you.

In fact, think I'll go do that now ;)

ERIC-TC · 08-30-2006

How will my wideband react when I start to run water/meth injection? Just curious

dvldoc · 08-30-2006

Quote:

Originally Posted by ERIC-TC

How will my wideband react when I start to run water/meth injection? Just curious

Yes your wide band will pick up the meth and read richer.

datsun280zxt · 09-01-2006

Quote:

Originally Posted by dvldoc

Yes your wide band will pick up the meth and read richer.

To clarify that just a bit. Your wideband will read richer than you actually are. You want to start using the lamda readings instead. They don't change with fuel type. Meth has a different Stoich point so it will skew the a/f scale if you're wideband is setup to read gasoline.

dvldoc · 09-02-2006

If you go to a tunner you need to go to someone who is used to tunning for Meth because it is different from regular fuel.

06-27-2006	#1 (permalink)
Willow Water Injection Newb Join Date: Jun 2006 Posts: 10	Tuning for Meth: more or less gas? I've spoken with a couple of tuners (mine included) who agree that when tuning for meth, you should turn down the gas with some sort of proportion to the meth. I've heard some folks say just juice the gas up and then add meth. The tuners have had consistent results and gains doing it their way. I'm curious to know why juice the gas up and then add meth?

06-27-2006	#2 (permalink)
Willow Water Injection Newb Join Date: Jun 2006 Posts: 10	Re: Tuning for Meth: more or less gas? Nobody?

06-27-2006	#3 (permalink)
dvldoc DevilsOwn Staff Join Date: Apr 2005 Posts: 1,973	Re: Tuning for Meth: more or less gas? I'm not sure who says add fuel then meth, because that is dead wrong, Leaner is meaner period. You need to pull fuel and add methanol. You need to get your AF ratios to were you make the most power. A real tuner would know this, running pig rich will make you slower. If you have a map clamp or like us GM vehicles use a AFC to tune our fuel then you will be able to get your vehicle the way you want if you have a means to scan the vehicle with a scan tool such as a autotap or LS1M ect. A wideband is the best means to tune if you can afford one it is defiently nice to have. You can get a dyno tune at many shops that can do this for you.

08-30-2006	#5 (permalink)
ERIC-TC Water Injection Newb Join Date: Apr 2006 Posts: 6	How will my wideband react when I start to run water/meth injection? Just curious

09-02-2006	#8 (permalink)
dvldoc DevilsOwn Staff Join Date: Apr 2005 Posts: 1,973	If you go to a tunner you need to go to someone who is used to tunning for Meth because it is different from regular fuel.