I am going to start building my motor this next summer for a lightly modded B18C
( JDM GSR). I am going to use:

PnP B16 Head
Skunk2 Tuner 2 cams
Tuner cam gears
Injectors (not sure what yet) or will stock be fine?
AEM FPR
P73 or PR3 pistons
ITR Intake Manifold
ITR TB
Header (not sure which one yet)

So moving onto my question. Can I run this setup with a Phareable chipped p28 and a VAFC with AFR until I can afford Hondata and a tune? I looked around but came up with mixed answers. I know I wont be getting the full potential out of my build but just want to know if I can run this safely with a chipped ecu. Let me know. Thanks

 

only if you are gonna tune it with the vafc. otherwise dont put the motor in the car until you can get the tune.

 

*in for the know* got some tuner 2's lying around myself. just hessataint on throwing them in.
I,H,E,IM,TB,milled head.

 

always include the tune as part of your build. because it is part of your build.

its like building your PC and not loading drivers for anything.

without a wideband hooked up you dont know if you have too rich or too lean spots

even a small change like exhaust and intake combo will change the fuel requirement
i changed my exhaust and my idle wastoo rich and wot was too lean.(that is on a tuned ecu already with open loop)

i added different intake manifold and throttle body and again the fuel requirement is different at each rpm

 

so a tune can lean out(or richen) the fuel mixture as needed ?. I ask b/c ever since I installed my S2:IM with 70mm tb(port matched) my car runs rich AF ! to put it lightly

 

if i understand properly rich spot means you are getting less air in that spot and a set amount of fuel is beeing injected.


when you upgrade anything that changes air flow through your engine he air fuel ratio gonna change.

say for example you add a bigass exhaust and leave stock restrictive intake.
you will see alot of vacuum at wot because engine is suckin hard and blowing it all out through open pipe.

if you add a bigass intake and peeshooter exhaust. the engine will inhale the air that it needs but wont be able to dispose of the exhaust gas as quickly so there will be very low vacuum at wot.

tuner on a dyno has ability to control the load and speed.

on a dyno he can hold the car at 5000rpm with certain load so he can adjust the cells in that area.

for example a dyno can simulate a steep hill for your car so you will be at low rpm and high vacuum to tune that area. or you can be at high rpm and low vacuum for him to tune when you go downhill.

pretty much a dyno can simulate any of thos conditions indefinitely unlike road tuning.

tune makes your engine run properly with correct fuel and timing maps so you dont blow it up when you race.

 

Dead on!

Basemaps are there for you to limp around on until getting tuned. There is ALOT an afc cant do that your motor may need.

 

Your mods will increase airflow (p&p head & cams) which will make your A/F ratio go up. This is not good. You must tune!

 

My car just runs rich all the time. I have a bsemap but i don't think it's verygood am planning on getting it tuned. just wanted to know if the over rich mixture could be leaned out via tune. thx

 

The tuner most likely wont even use the map on your chip

 

If its too rich all the way across you can adjust the fuel predsure down 2psi eavh time and see.
As long as you remember to turn it back up when tuning. Just remember fuel pressure is not linear across rpm so be careful with that.

 

always tune your car not just put some parts in and out and just drive.
i would save up for a decent tune, it will be worth it.

 

Fuel pressure is not a linear afr fix either