Gear Ratios in calibrations

llms07 · Post by **llms07** » Mon Feb 01, 2010 1:09 pm

I have a stock obd1 b16a with a s1 cable transmission. I have ran the motor with a stock p30 map with stock b16 s4c gear ratios and stock ls s1/ys1 gear ratios and i havent noticed a difference between the two. Is there a power change if i set my gear ratios to the b16 s4c ratios vs the s1/ys1 gear ratios? I am currently running the stock b16 s4c ratios on the map even though i have the ls cable tranny bolted to my motor. help please

Post by **Spunkster** » Mon Feb 01, 2010 2:22 pm

Gear ratios have nothing to do with power levels. The ratios are just used for calculating what gear the car is in based on Speed and RPM.

llms07 · Post by **llms07** » Mon Feb 01, 2010 7:54 pm

so when i go to dyno tune, then is when i want to make sure my gear ratios match my transmission correct? or does it not matter then either?

fly_n · Post by **fly_n** » Mon Feb 01, 2010 11:10 pm

No,it doesnt matter,now go get your car tuned & enjoy.

If your running boost per gear(which u obviously are not),then u might want it reasonably close.
If u absolutely need dead accurate datalogged gear selection values to ogle over in your spare time,then that might be anothe reason u would want it correct.
In other words....it doesnt matter.....