4.3 to 6.0 Swap Complete..Slooow

[RichardLSX]

Do you have a dirty MAF? Check your knock sensor wiring. A tune is not a bad idea, but I really think you have something else going on there. Open loop good to closed loop bad .. 99.99999999999999% or the time it's a bad sensor, or wiring issue.



What he said..

Would me just having 2 o2 sensors and no cats at all be a problem? They can turn off the o2 sensor from being read with a tune right?
Also, how bad are my heads compared to a aluminum headed 6.0 like in a 0-100% performance wise?

Thanks for all the help.