Apexi SITC queries...

[Slingshot]

Guys, need some help here. Does Apexi S-ITC significantly increases an engine's performance? Does it make any difference on installing and not installing it?
Thanks in advance for those who replied...

 

[white_bird]

it able to adjust the ignition timing according to the modification.. so the sitc alone cant do much..

 

[taqu]

If ur engine is standard, putting SITC is waste of money, ur stock computer is good enough for standard condition. Even if u put aftermarket airfilter, ur stock computer can adjust accordingly. If u go for more moderate mods eg hi camshaft + SAFC, SITC is quite useful to re-shape ur ignition timing. Bottomline is, it depends on what have u done to the engine.

 

[Slingshot]

Ok. Say that i've done extensive Port & Polish, retarded exhaust cam, higher fuel pump rate and etc. Also, installed an SAFC and ITC. Does it effect significantly the engine's performance if it's tune optimumly? What are the expected power gain? And, please if there's are reliable tuner for both SAFC and ITC.

 

[taqu]

There may be some small gain but not much, just don't expect a whooping 20% increase from SAFC/ITC, 4-6% is my 0.2cent guess from ur mod list.

 

[nd_summer]

I also have the same question to ask... will there any increasing performance if just only installing Apexi (Safc & Sitc) on the NA standard engine ???