Smulude

Here is my JRSC Prelude Dyno test with AEM CAI and Tanabe Hyper Exhaust. Is the A/F ratio too rich??? Please let me know what do you think! Thanks
http://us.f1.yahoofs.com/users/ef46d...2Bzg.AxVOdSUDT


[Modified by Smulude, 4:54 PM 3/27/2003]


[Modified by Smulude, 12:32 PM 3/27/2003]

keebler65

most forced inductions setups are recommended to run between 12-12.5. you could probably gain some power, for example, where it is below 12 by leaning it a little, that is, if you're using something that can tune based on rpm (not just the JR FMU). although overall, it doesnt look too bad. nice numbers what PSI are you running?

Smulude

I'm running 6 PSI.

So the Apexi VAFC might help,right?

Thanks Keebler65

keebler65

exactly, since you can tune based on RPM. just make sure you tune on the dyno/wideband again (dont just guess with the settings)

Smulude

Thanks. If I want to go VAFC later, should I adjust the fuel pressure regulator in order to lower the fuel pressure. By doing this, the A/F ratio should be leaner, right?

96IntegraRS

Ultimately, yes, the car will run "leaner" - throughout the whole RPM range, which may not be good for the car. in general, JRSC fuel setups need fuel midrange but fuel removed in the upper RPM range (IN GENERAL SUPER TUNERS) but remember that the injectors are computer controlled in the end- a VAFC will do wonders for you for the $400 you'll spend on it and a couple dyno runs.