Thanks for the pics guys. The aFe version will be fine. I'm just going to run with the "port" open since I have no concerns about water issues nor the bit of warm air it will let in at higher rpms.
From Gadget on xr-undergound:... Any dyno sheets that show the CAI even helps the SC??..
What I think the significant fuel trim deviation is showing is that there is an induced MAF Sensor error caused by the intake system.
The fuel trim value is the amount of self correction the ECU applies the internal look up tables to get the fuel mixture where it is supposed to be in closed loop mode.
The MAF Sensor is calibrated to the stock tube it is installed in so it can provide precise air flow data to the ECU. When the MAF Sensor is moved to a different tube like an aftermarket intake that does not precisely duplicate the tube diameter and shape you can induce a calibration error and the MAF sensor will not provide accurate airflow data to the ECU.
If you move the MAF senor to a tube that is slightly larger than stock the same volume of air will pass the MAF sensor at a lower velocity and the MAF sensor will miss report the amount of air entering the engine, in the case less air than there actually is. This will cause the ECU to inject less fuel than it should. An example of this is the K&N intake for the 99+ 5VZ-FE applications.
The opposite of this can happen also. If the tube size is smaller than stock the same volume of air will pass the MAF sensor at a higher speed and the ECU will miss report that there is more air entering the engine than there is. This will make the ECU injector more fuel than it should. An example of this is the Volant intake for the 1GR-FE.
With this in mind what I believe the fuel trim data and lean AFR is showing for the new TRD intake for the 1GR-FE is that the tube size maybe larger than stock causing an induced MAF sensor error on the lean side. It could be from turbulence. It is hard to see turbulence on a scan tool or wideband, but the X-1 can show turbulence in the MAF sensor signal.
I have the initial prototype supercharger system up and running on the FJ Cruiser. It was two very long days of fabrication. I hope to get a dyno on it this week and spend some time tweaking and modifying the design. Once I am happy with it I will take it off to build the fixtures to produce the system. I hope to repeat the dyno tests with the X-1 while waiting for the production prototype parts to be available for test fitting.
The X-1 will do two things I think. First it will show if the induced MAF sensor error is being caused by turbulence or if it is a tube size issue. The next by stabilizing the AFR to a consistent value it will show if the power gain from the new TRD intake is from increased airflow, or by leaning out of fuel mixture. Remember I was able to get a 15 RWHP gain with the stock airbox and leaning it out with the URD MAF Sensor Calibrator.
Here is the dyno chart. I blew it up pretty good so you can see the slight differences.
The blue line is the stock airbox.
The red line is the aFe Stage 2 Si intake
The green line is the new TRD intake.
As you can see both the aFe and the new TRD make more power than stock and make pretty much the same power gain on the dyno. The new TRD is also running a good bit leaner than the aFe so the power gain may not be from increased airflow over stock as much as it maybe from a much leaner mixture. Future tests with the X-1 making the AFR consistent with all the intakes will give us a better idea of the airflow gain differences.
I'd say its normal as it looks like that on mine as well. I think it is just from the machining process.
Yes that is it. Split wire loom, that is the name i couldn't think of.
So can you feel a difference down low with the AFE box? More sound any comments on it would be appreciated. Thanks.
The AFE/TRD intake by it self is loud (the good kind )
The S/C really drowns out the CAI though. I can barely hear it as much after i installed the S/C.
One thing you guys looking to eek more power out is this accelerator pedal device. It completely gets rid of the slight delay experienced when you step on the gas pedal to make it more instant. Let me see if i can find the link...
Underdog Racing Development
Hey G,You should be fine running the old TRD/aFe intake with your supercharger system.
A quick fuel trim/AFR test will confirm that for you.