turbo

 

-35 WWF will some times have antifreeze in it. might want to make sure it doesn't. thats why i run -20. are you sure you have stuff like cat over temp and all that turned off. random little things may be happening at the same time.

or it could be a bad wide band...

 

the stuff im using should be just meth/water. im going to switch to strait meth or 80/20 mix soon and experiment with nozzle size. whats cat over temp? on a side note i got my cutout on today, when its open i make 2psi more boost and it still goes rich like low 10's afr (says my gauge) still running the maf if that makes any difference

 

Are you spraying thru the MAF?

Why are you using a MAF with boost?

 

cat over temp adds fuel to cool off the cats. even if they are not there. it will add over PE. you say you took fuel away, but from where? PE,VE or MAF. if you are using the maf and you pull fuel from the ve table it will not help any. soon as you go over a pound of boost your map table is done and it has to rely on the maf until you flow enough lbsmin to out flow it. then its blindly adding fuel. if your going to use the maf you need to tune that table and set the PE table where you want the fueling. but to be honest 2bar map is the way to go. just ditch the maf. you never did say how much boost you are running. i know i maxed out my maf the first time i drove my tahoe. if you plan to stay below the 500hp mark you may be ok with the maf but at some point you will with out a doubt max it out.

 

im at around 7-8 psi right now, cutout open it goes to around 10 psi. i don't do my own tuning so i don't know where fuel was taken out of. meth is spraying after the maf. SD is next on my list of **** to do to the truck. so if my maf is maxed out it would be going rich or lean?

 

It depends on where it left off. If it left off rich it is more Likely it will stay rich. Until you reach a point where the air out runs the fuel so to speak. Maybe I missed it, what year is the truck. Just make sure your tuner isn't hacking thing to make them work. Hacks kinda work but if it fails it will be bad. The computer needs to know what is going on and why or bad thugs can happen. You may be rich as hell one second and lean…boom the next.

 

Ask anybody that has blown something. Tuning is by far the most important step of all.