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MAF Polish (Mass Air Flow sensor disassembly)
By taking apart and polishing the MAF you can smooth the airflow for the intake system.
1st Remove MAF from car:
-Remove air hose front and back and unclip sensor.
2nd Disassembly of MAF:
-Four torx screws. one at each corner.
-To remove mesh screen, you will need to carefully ply the retaining ring out. Be very careful not to damage the sensor wires behind the screen.
Some people leave the screen out to increase airflow. But, this screen is designed to cut turbulence and increace flow. Also removing it may trigger a engine light. The screen is not a big restriction, so it is best to reinstall it when you are finished polishing the unit.
If you are looking for more flow, and have extra time, then do some extra sanding on the MAF. Make sure that both front and rear pieces match when assembeld. I also used my dremal to grind the inlet for the MAF. Then i resanded and it looks great. My MAF now has a bigger opening then normal. Hopefully it will funnel air into the intake smoother then it would have before.
Now that you have the MAF disassembled, you can begin polishing it. I started with a 320-grit wet sand paper and worked up to 2000 grit wet sand. Then I finished with metal polish. If you have deep scratches in the tube you can go down to a 220 to work out these imperfections. But be sure to leave it smooth by slowly progressing up to higher and higher grit papers.
Once finished polishing, reassemble and install in car.
Polishing Throttle Body
Follow the polishing steps in the above section for the MAF. Removal of the TB just requires the removal of all air hoses forward of the TB and the removal of the vacume lines. Becareful these vac lines are fragile. Next unclip the IAC and the TPS sensors. Then remove the 2 nuts and single bolt. Now just polish like normal you would do for the MAF sensor.
If you are going to Port and Polish your manifolds, now would be a good time to port match the Throtle body to the Intermediate arm. I used a dremal and a progression of bits to acomplish this. A steel gridding wheel, a drum sanding bit with course and medium papers, finishing pads, and lastly buffing cloths for the polish to be used after smoothing with hand sand paper.
Port & Polish TB, Intake Arm Tips:
TB opening fluted to match MAF. Exhaust portion of TB perfictly matched to the Intake Arm.
Keep matching each part together until they are matched. Use a dremal with a metal grinding bit to eat away the excess material. Then use the previous steps for turning the surface into its final polished state. Best thing to remeber is the smoother the better. By opening up the TB and port matching the tb to the intake arm you will recover Hp caused by drag on the intake. this will give you faster throtle responce and some gain in power. notice in the following pics how the opening grows on each step.
Port & Polishing Upper manifold
To begin:
-Remove Upper Intake Manifold and clean parts with a degreaser. The intake will have oil residue inside becaue of the emission system...This is normal. Clean old gaskets off the ports.
-Secure a complete set of new gaskets.
-Place the gasket on each side of the port and cut the gasket where ever there is over hang into the air stream.
-Once the gasket has no over hang on each of the two mating sides, use a marker to mark area on the ports to be removed.
-Grind away marked area and becarful not to grind area too thin. You do not want to eliminate too much of the port and make it hard to get a tight seal with the gasket.
-Make sure that you have smooth transitions on the ports.
-Sand newly ground area with a progression of sand paper to polish the port to a mirror shine. This step is much like the previous chapter.
-Reassemble and enjoy.
