New motor break in before E test

[Roc87]

Any rough idea of how many miles I need on a new build before having the emission test done? Was thinking around 500 miles and do a fresh oil change while I have the car up to put the cat on

 

[Heskahoka]

I had about 200 miles on my new build before I ran it through emissions here in ABQ. Passed easily with cat and emissions chip.

 

[Roc87]

380 miles on motor, around 30% e85 in the tank, TT e-chip, 200° coolant temp = easily passed!

2500rpm HC 11 of 200 limit
CO 0.00 of 1.20 limit
CO2 15.0
O2 0.36

Idle rpm HC 28 of 200 limit
CO 0.01 of 1.20 limit
CO2 14.9
O2 0.34

 

[Heskahoka]

Piece of cake! Good job!

 

[Chuck Leeper]

A 30 min drive, some boost apps, and it's as good as it's going to get....Just sayin.

 

[turbolou]

I recently brought a GN back to life that had sat for 20 years & last registration was in 95. Installed a rebuilt engine & maybe had a half hours run time in the doorway of my shop. Drove it about a half a block to local smog station & passed easily. If everything is on the money & dialed in correctly no reason not to pass.