Is engine mapping necessary after cbe and intake installation? I searched the thread

[Luciano13]

Originally Posted by Jordo!

With a different intake, it's possible you will be running a bit lean, as any changes to the intake tract may affect how the MAF's measure load. For the exhaust, it's not an issue.

If you aren't getting any CEL's, fueling is probably fine, if not optimal.

I was not getting any CEL after installing my set up. However, once i had it professionally tuned.... It showed my engine was starving approx 20% gas needed.

Lean fuel can result in many issues!

Rule of thumb when modifying engines...... Once you're done the installs..... Get it tuned!!
If you're planning on many add ons....tune once your build is complete.
Even a simple CBE needs tuning. If u also add CAI u Definitely need a tune

[Jordo!]

Originally Posted by Luciano13

I was not getting any CEL after installing my set up. However, once i had it professionally tuned.... It showed my engine was starving approx 20% gas needed.

Lean fuel can result in many issues!

Rule of thumb when modifying engines...... Once you're done the installs..... Get it tuned!!
If you're planning on many add ons....tune once your build is complete.
Even a simple CBE needs tuning. If u also add CAI u Definitely need a tune

How lean at WOT? If you were hovering around 13.0 you were fine. Much leaner it's more iffy. In low load, closed loop, you were probably just running high-ish fuel trims.

Don't get me wrong -- I think a tune is a good idea if you completely replace the OEM intake box because any changing of intake diameter or MAF placement can drastically alter things, but I don't know if anyone is running so lean as to knock, for example...