Quick dyno tuning questions.
12-10-2007, 09:47 PM
#1
Launching!
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Quick dyno tuning questions. after my pacesetters come in im going to take the car to my local dyno and try to get my numbers up alittle. But i was curious, how do the tuning people from places like new era and other things make alot better power in just 3-4 pulls. Is it as simple as plugging in a new afr to the stoich? 14.6:1 is stock, should i try and lower that a bit, maybe get around 13.0:1 or so? im using HP tuners. I want to try and get the most out of my few pulls
12-10-2007, 10:37 PM
#3
after my pacesetters come in im going to take the car to my local dyno and try to get my numbers up alittle. But i was curious, how do the tuning people from places like new era and other things make alot better power in just 3-4 pulls. Is it as simple as plugging in a new afr to the stoich? 14.6:1 is stock, should i try and lower that a bit, maybe get around 13.0:1 or so? im using HP tuners. I want to try and get the most out of my few pulls
12-11-2007, 09:10 AM
#5
The Stoich. AFR of 14.63 is only used in "closed loop fueling" which is part throttle operaton--that can't be changed -- there is no reason to change it anyway as an engine is most efficient at 14.63 anyway
HP gains and tuning for Mods such as headers are done mostly during the "power enrichment " mode or WOT (open loop)--typically an LS1 engine comes STOCK with an AFR of 11.4 during PE-----setting that to a leaner 12.8 will produce more power---The other most used area is the timing table where 2-3 degrees are added throughout the table to increase power and throttle reponse
HP gains and tuning for Mods such as headers are done mostly during the "power enrichment " mode or WOT (open loop)--typically an LS1 engine comes STOCK with an AFR of 11.4 during PE-----setting that to a leaner 12.8 will produce more power---The other most used area is the timing table where 2-3 degrees are added throughout the table to increase power and throttle reponse
As a fun experiment, set your OLFA table to 1.0 and then change the stoich value with your real time tuning software/hardware.
Ryan