ok , here is my way,i just cover the PCM

http://www.youtube.com/watch?v=JWrYP...ature=youtu.be

http://www.youtube.com/watch?v=9Kz4o...ature=youtu.be


usually do this beginning of summer (once a year) it was very very dirty sand ,dust and black spots just very dirty here is she now

http://www.youtube.com/watch?v=KjWRs...ature=youtu.be

sorry it was dark it's like this now except for PCM wires.


really clean engine bay broo
2nd day add some break cleaner just a little to keep it shiny and nice ,
sorry no pic or v was busy cosine do it for me .


Pros :
nothing except after cleaning the throttle body. (same day after shower) better idle, RPM needle stop going up down while stop.
or maybe its more smoother or its just a feeling (like when u change oil) or change from normal oil to synthetic oil)

Cons :
not that big deal but yea there are some

1- http://www.youtube.com/watch?v=9LSRZ...ature=youtu.be

not solved until now every time start the light i have to tick the gauges to let it work !! any idea ..

2-Horn become very weak, but it came back next day .

3-check engine light, but thnx to GOD it go away after 30 mile driving . (I think because the very strong water pressure) he was using


open your hood and clean it (you well feel better)

 

Not really something I would do... But hey, whatever works.