So my D16Z6 spun a rod bearing (after 60,000 kms of boost) and it was kind of my fault because I didn't change the oil as often as I should have.

Anyways, I am running Beerbongs classic tune and I have almost the exact same setup (DSM 450's, .60/.48 T3 ect).. My car ran PERFECT on his tune with the Z6, however since it is cheaper to replace the whole engine than fix the dead bearing my question is this.

How extensive of a retune to my ecu will I need changing over to a D15B from the Z6 (with a tune that worked flawlessly). Do I need to retune at all? The small displacement change and the compression ratio increase on the D15B vs the Z6 worries me.

Help! Thanks!

 

Where are you located? Look in the F/s section I am selling my Zc.

 

Unless that's a 1.6L sohc vtec ZC, it would only make matters worse. Technically speaking, you'd probably only be more rich in the low-load sections, and about right on for boost. If the d15b has the more aggressive cam everyone speaks of, you'd have to do very little tuning. You're only dropping 6% displacement, so its nothing drastic.

 

Lately I've read same cam as Z6. Here's what I would do... use my old map and clock the dizzy retarded slightly depending on the compression jump (temporarily).

 

It is a 1.6L sohc vtec ZC