what's up gang?can you guys tell me what would be the best a/f ratio?THIS IS A ALL MOTOR,4 BRIDGE, 13B WITH HOLLEY SET UP FOR DRAG RACING.THANKS FOR HELP AS ALWAYS.

 

depends on fuel...

 

we are going to use vp112

 

It was 12.5:1 on my J-bridge 12a.

What we did was tune for max hp w/o going crazy with the timing advance. Tune for HP.

 

thanks for your input

 

Sorry To Hijack This Thread But What Is Best A/f Ratio For A 13b-re Stock Motor Non-sequenrtial On Pump Gas. Im Gonna Have To Tune My Haltech Pretty Soon. Im Looking At Boost Under 12 Psi

 

Always search first.

 

i did, thanks for nothing!

 

Use cold spark plugs 11.5's-13.0's, as for the AFR I would recommend staying between 11.1-12.1 any higher than 12.5 your playing with fire. If your doing your own tuning I would strongly recommend purchasing a Digital EGT Meter. Something with a fast update time not the cheap manual gauges. Watch the EGT Temperatures really close this tool can also help you tune your engine. Injection is cool but, the engine is still capable of blowing up. Tuning is critical so be very careful.

FYI: Using pump gas is ok for low boost applications but, depending on how large your turbo is I would be careful. VP C16 is probably your best bet I have always had good luck with that product.

Hope this information is helpful not like the other response.

 

the engine is a non turbo,would this be pretty much the same? Thanks for taking your time to help.