What would be a conversative timing amount at 195kpa?
Oct 21, 2014 | 09:43 AM
#31
TECH Apprentice
Joined: Jan 2005
Posts: 357
Likes: 0
From: St Petersburg, FL
Yes!
I run 93 pump, 19 degrees on 12 psi with no meth. Stock 4.8L. No knock at all and runs great. I'll be putting a 4l80e in here soon and basically going to crank it up until i'm out of injector. AIT's creep to 120 when its 95 degrees out, but with the current wether conditions I doubt it will get over 90.
Just curious on the post of 110 IAT's running meth? That seems crazy high. Should be getting iat drops of 20 degrees i would think running meth/water.
After 10 psi on my setup i'm stuck with last row of timing which is lame.
I run 93 pump, 19 degrees on 12 psi with no meth. Stock 4.8L. No knock at all and runs great. I'll be putting a 4l80e in here soon and basically going to crank it up until i'm out of injector. AIT's creep to 120 when its 95 degrees out, but with the current wether conditions I doubt it will get over 90.
Just curious on the post of 110 IAT's running meth? That seems crazy high. Should be getting iat drops of 20 degrees i would think running meth/water.
After 10 psi on my setup i'm stuck with last row of timing which is lame.
Oct 21, 2014 | 09:53 AM
#32
Yes!
I run 93 pump, 19 degrees on 12 psi with no meth. Stock 4.8L. No knock at all and runs great. I'll be putting a 4l80e in here soon and basically going to crank it up until i'm out of injector. AIT's creep to 120 when its 95 degrees out, but with the current wether conditions I doubt it will get over 90.
Just curious on the post of 110 IAT's running meth? That seems crazy high. Should be getting iat drops of 20 degrees i would think running meth/water.
After 10 psi on my setup i'm stuck with last row of timing which is lame.
I run 93 pump, 19 degrees on 12 psi with no meth. Stock 4.8L. No knock at all and runs great. I'll be putting a 4l80e in here soon and basically going to crank it up until i'm out of injector. AIT's creep to 120 when its 95 degrees out, but with the current wether conditions I doubt it will get over 90.
Just curious on the post of 110 IAT's running meth? That seems crazy high. Should be getting iat drops of 20 degrees i would think running meth/water.
After 10 psi on my setup i'm stuck with last row of timing which is lame.
Oct 21, 2014 | 09:59 AM
#33
TECH Apprentice
Joined: Jan 2005
Posts: 357
Likes: 0
From: St Petersburg, FL
I see. if its pre-roots thats pretty good. I remember watching a stock coblat ss hit 180 aits all day long lol.
Oct 21, 2014 | 10:18 AM
#34
My IAT's climb roughly 38 degrees in a pass, they peak right after the 1/8m and actually will drop a bit after that. At cruise they are generally 14-18 above ambient. Without the meth they would keep climbing the whole pass.
Oct 21, 2014 | 10:21 AM
#35
Oct 21, 2014 | 10:26 AM
#36
Oct 23, 2014 | 07:42 PM
#37
The addition of a fuel composition sensor is not too hard to do. The closest e85 station to me is 35 minutes away. I grab 40 gallons or so in a drum and it sits in my garage. I drive all over on pump gas and it has plenty of power for the street. When I want to run down the track, I dump some in when the tank is dry. The sensor calculates the actual fuel percentage, and adjusts the tune. I run 14 PSI on pump gas and my timing is 16 degrees. My tune adds 4 degrees of timing when I am on ethanol. I run 26 degrees of timing before the boost timing table starts working, and my plan when I turn the boost up to 22 PSI is to have about 17 degrees or so.
Oct 23, 2014 | 09:24 PM
#38
Yes mine does work and add timing. I am not too familiar with the 06 models, but I almost thought they used STFT's to determine alcohol content instead of the sensor. My truck was a non flex fuel truck to begin with, I flashed in an OS that was flex fuel when I added the sensor. I did have to alter the stoich table a little, I think the sensor was off just a little bit.
Oct 26, 2014 | 09:52 AM
#39
195 kpa 16.5 degrees
E30 mix and TWO 15gph straight meth
My guess is my timing is conservative , but I am going to keep it that way and add more boost when I get to the track . . . one day
E30 mix and TWO 15gph straight meth
My guess is my timing is conservative , but I am going to keep it that way and add more boost when I get to the track . . . one day
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