Well, I pulled mine off yesterday for a few reasons, first im gonna replace my thermostat and put a 180 degree temp one in. Second, I got a new wiring harness coming sometime this week and will make life easier if I take it off.

On to my real question now, I hear so much about polishing the TPI intake plenum and was curious if it could be done to the MPFI,

I would imagine it would basically be the same procedure (although a bit harder due to the shape of the MPFI's) basically my main concern is, will it hurt the internal workings of the car in anyway. Thanks.

 

Its easy to do and no it will not hurt internal workings. Were are you getting the harness from?

 

There is not much you can reach in the plenium to help airflow. The way the runners are attached to it pemanantly makes it difficult. The biggest restriction in the MPFI system is where the upper and middle sections meet. The upper section of runners and middle runners make a very sharp aprox 135* bend. I am currently fabbing a new upper plenium that will be completely open space plenium that dumps into the middle runners- no funnel bends. It will be like the V8 superram setups. I have tried some porting on the stock upper intake/plenium so far and am not happy with the restriction areas- thus have stopped that project for now and am designing a new setup.

https://www.thirdgen.org/techbb2/sho...hreadid=185591

 

Getting it from a junk yard, it has the "it don't work, get your money back" gaurantee. Found it at car-parts.com.

 

i got up into mine with a dremel and a flex-shaft...

i ground it out alot too, probably only like 2mm thick walls

i will probably have to buy a new one when i get my turbo setup on, it might not handle the boost.

 

Pics? I want to see what the stock upper looks like, ported out.

 

My abandoned project for now- You can't weld cast aluminum safely without causing possible voids- This is the largest I could get it for my new TB (62mm)

 

I'll probably get some pics soon as I pick up some sand paper to do the job, gonna do my rims while im at it too.

 

You could always find a machine shop that could extrude hone it... expensive, but very effective.

 

Already checked into Extrude Hone, $600-800 estimate for the entire intake The higher end includes gasket matching.