datalogit maps

[jangotat]

hey i was wondering if anyone on here has a datalogit and access to the boards? someone stole my pfc and i just got the new one and the datalogit but now they havent replied to me to add me to the group. I need to get a base map for my motor. rb26 sard 800cc inj, apexi intakes, n1 downpipe, decat, jdm exhaust main thing is for the injectors i know it will run ok with a base map modded only for the injectors and i can get it dyno tuned for the rest later. Otherwise could someone explain how to change the values in the base map from the stock 444 to my 800? ive read and searched but want to be sure, no one wants to blow their engine lol. thanks

[DJ]

http://www.paulr33.com/powerfc-faq/powerfc-faq.htm#57

How do I configure larger injectors?
Configuring larger injectors into the PowerFC is quiet simple and takes only a few moments. You need to know the following information before you can continue


Current injector size
Current injector latency
New injector Size
New injector Lag time

Injector Size and Latency (standard units)

Unit Size Latency
RB20 260cc/min 0.890msec
RB25 370cc/min 0.528msec
RB26 444cc/min 0.772msec
SR20 (Jap Spec Manual) 448cc/min 0.584msec
Nismo 480cc 480cc/min 1.100msec
Rx7 550cc 550cc/min 0.730msec
Nismo 550cc 550cc/min 0.710msec
Aftermarket New Units (example only) 600cc/min 0.810msec


To work out new INJECTOR correction and latency;

Old SIZE / New Size = Correction
New Latency - Old Latency = Latency Correction

John plans to install 600cc injectors into his RB26 VL Turbo. The following figure's are used;

444 / 600 = 0.74 * 100 = 74.0%
0.81 - 0.77 = +0.04 msec

So he would enter 74% for correction and 0.04 as new latency

Once you have switched to larger injectors you should still check your AFR's with a wideband to ensure they are safe and acceptable.

For a list of common OEM injectors and their settings try here;

Injector Chart - Side Feed OEM
Injector Chart - Top Feed OEM