if the injectors or your feul rails have a slight clog in there they wont spray consistently. ive had inconsistent feul cause misfires across all cylinders before.

how many miles are on it and do you EVER add feul additives?

im in manassas VA, thats a bit of a drive but if you set it up and i can get the time off id go

id say check your injectors to make sure they are all spraying at optimum range

well, i dont see how a damaged 02 sensor could cause a misfire in more than 1 tune.....im interested in what the dealer says

have you tried logging your fuel trims?

also, to be honest, it sounds like you have a minute vacuum leak so check all the sealed areas you screwed with when you installed it.

I have a 4.8L with a 3.23 rear end so that may be just part of it, but if there is a solution to get a little more torque in the bottom end I am all ears.


Get a new tranny its not made for low end Tq.

perfect example, my rear gears are 2.73 and i can barely get my tires to hook. To be honest i ...

If your getting a consistent misfire code....then you probably actually have a missfire.

P0442 i think is a vacuum leak but im not certain

P0650 im not sure but sounds like an error on the actual PCM

P0654 sounds like a tach gauge error

I agree run the chevron. if you dont your going to be replacing shit you didnt know existed

at the first menu where it should have menus for tuning, diagnostics, and options go to diagnostics. in there you will have an option scan codes or scan DTC something like that. do it and tell us the codes

wait......you have a bad PCM yet can still drive it?!

in a nerdy nothing ever works for me like that way thats awesome, ive never heard of a vehicle being operational with a dead computer component

you need u7195.......

http://www.shopatron.com/product/part_n ... 8.8474.0.0

well the LS engines have a tag on the throttle body

example
http://i101.photobucket.com/albums/m43/ ... S1_Tag.jpg

excuse the shakiness, engine was running when i took that pic

have you checked to see what the actual code is?

if so, whats the code thats causing the CEL?

well, for the MAF codes i would assume that yes some oil got pulled through the filter because unless your MAF is shorting out theres nothing i can think of that would create those codes. im clueless on the fuel too lean code though