View Full Version : Things to know before you DYNO?


bayer-z28
02-21-2011, 08:01 PM
I have learned a couple things in my past two tunes and I was wondering if there is anything else? TSP only really tuned my car for peak power and there was a nasty lean spike at the bottom of the graph which in turn was the reason for my TQ being rather low. (372rw wit LS6 heads and PatG Tq cam.)

-I don't want to see a lean spike with the tune
-I want a full readout from start to finish. Not clipped from 3500rpm to redline.
-Learned to be VERY specific about what I am looking for and what the cam is designed for.
-What mapping/graph? SAE? Standard? What is preferred?

Correct me if I'm wrong.

Demonicbird00
02-22-2011, 05:27 AM
were you dynoed at tsp? or mail order?

bayer-z28
02-22-2011, 08:13 PM
^ At TSP.. Halloween day 2008. Had a good ride out there and back (NM - TX - NM.) Was almost worth the ride just to see some different scenery.

bayer-z28
02-25-2011, 06:55 AM
Anyone else? What graph? SAE or Standard? And what are the differences?

Gary Wells
02-25-2011, 07:37 AM
Anyone else? What graph? SAE or Standard? And what are the differences?
SAE correction factor is most common, standard correction factor will give you a tad higher readings (about 3% on the average, I believe), and uncorrected will generally give you higher readings that that. If you do a search under SAE correction factoring on this forum, you will find some very good info from some very knowledgeable people.
Correction factoring won't be as important for tuning as it would be for dyno #'s.
HTH

Ragtop 99
02-26-2011, 08:06 AM
corrected is useful for comparing your results to others.

They can also printout your data in a table format, every 100 or 200 rpms. It is handy to have when looking at shift points.

Detoxx03
02-26-2011, 01:15 PM
I always use the SAE correction factor