PDA

View Full Version : 4.3 silverado tuning



SPRAYED07
July 31st, 2007, 10:08 AM
going to tune a 4.3 tomorrow...this will be my first non ls motor. what should i look for? what are you all adjusting? pretty well the same principal as my 5.3?

SPRAYED07
August 5th, 2007, 10:12 AM
anyone? what to do with timing?

Lextech
August 6th, 2007, 12:42 PM
I have never looked at a 4.3 tune. The 5.0 and 5.7s like about 3 degrees more timing. PE delay is too long, I like it at zero. PE is also too rich, typically around 10.5 to 1. If Normally asperated I set it to 12.8 to 1.
I set RPM Bypass to 400. Torque management settings are usually a matter of preference.

Tucsontoy
July 3rd, 2008, 01:39 PM
What were the final results on this 4.3?
I may try one also.
Thanks
Roger