Quote:
Originally Posted by OchnofConcrete
lol, seems to me like you know your car better.
you could teach me some stuff..
the mixtures and ecu rev codes are somethign i can't wait to learn if i ever get there.
what do you mean exactly when you speak of "only at 11" or 12,13,14... on the fuel..
sometimes i feel like i'm learning all this crap just to fill up my head... came so close to gettin to play with all that shi stuff on my 240, and now i'm back to square one...
tell me some about your air/fuel ratio...
FIRST OFF, the idea of droppin a reprogrammed performace ECU onto a similar sized, slower engine is magnificent. totally do-able but i start to think of all the incongruencies.. all the little defects in doing somethign like that.
unless like you, you switch the cams at the same time. but i mean more like how they did it... got all the sensors to work with it. you know what i mean?
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Your theory about fuel pressure is not correct at all. The fuel pump is mechanical and the fuel pressure regulator simply regulates fuel pressure based on an orifice size and vacuum. The ECU cannot and does not control fuel pressure or the amount of pressure created by the fuel pump. All OEM Nissan ecu's are programmed to run and assume 3 bar of fuel pressure.
The Nismo AFPR is adjustable to richen or lean out the entire mixture. This can help you make more power but it is somewhat of a band aid. My first question is where and how you are taking wideband readings on your dyno setup enjoydride. If the Wideband sensor is not in the exhaust stream between the header and the cat then the readings you are getting are likely not completely accurate. Since you are at a point where you are wanting to squeeze out every ounce of HP then you need to take accurate readings. Anyone who jams a sensor in the muffler and calls it accurate is somewhat suspect in my book. I would also verify what sensor they are using and whether or not they allow people to dyno. on leaded gas using that same sensor, again that would mess up the accuracy of the sensor.
Lastly the JWT ECU is a great NA mod that will certainly make more HP over stock. So you are definately getting HP for your $, however JWT does not and will not release a program for the masses that is pushing the envelope in terms of FP on the lean side. They have to tune to that people do not blow their stuff up and with the # of idiots out there they must be on the conservative side if they are not tuning your car on their dyno. If you are looking to extract every last bit out of your setup I would try something you can tune yourself like the calum realtime ECU or using something like an SAFC to lean out the JWT program.