Hi there,

Guys i would appreciate it if you can help me with this code that keeps coming on.

System fuel trim lean bank 1 and bank 2.

my car just keeps giving me detonation because i think of this thingy. I have tried everything and till now the problem is the same i just want to know if i have this code on what is wrong or what do i have to do or change.

 

Where do you get your gas and what octane do you run? I have seen this code quite often with the 89 octane ethanol fuel.

 

If your truck is making 420hp do you have a supercharger? If so what programming came with it? [/align]

 

As for Post #2 i use 92 Octane gas here in Dubai, and today i found out what was wrong and what keeps this DTC coming up. The problem is coming from either the MAF Sensor or the O2 sensors in the cats.

Post #3 It has a supercharger and the 420 hp is rwhp. And regarding the programing usually it has the superchip but for my car i used wester's programming. My car has an AFR head and a COMP cam and a Magnacharger.

Thanks alot guys

 

That is definitely impressive, I am glad you found out what was wrong and hope you get it fixed with no problem. If the MAF is messed up and cannot be fixed or cleaned you might think about the Granatelli for a replacement. The truck look great I sawthe poll you posted, the regular cab sport side is my favorite and have a black one myself.

 

Thanks bro,

Those three cars belongs to me the red one is supercharged the black one it stock and the white one is my baby modified as i said.

 

OK ive read on two diff. topic that you have stated that the O2 sensors are in the cats, WRONG they is on before and after on both cats, not in them.... FYI

 

OK OK OK thats smart, they are on the pipe that is connected to it, and they are 1 cm before and after that so i said that they are on the cats OK.

I have my own garage and i have faced this problem in more than 65 sierra.