blow thru set up..?'s

[crzsomang]

I was wondering if the location of GM sensor makes any difference.

let's say I bought a FMIC kit,
would it be possible to put the GM sensor right after the throttle body
elbow using just 2 couplers?
would this effect any performance if it was too close to the throttle body?
would I have fitment issues?
because if you look here
http://www.dejontool.com/images/DSM-1g FIC/UIP-1gC2-install2.JPG
dejon tool's blow thru pipe puts the sensor further down
and other throttle body elbows are shorter and sit right by battery,
a lot closer to the throttle body and less space.
I dont want to cut the pipe and put it between there b/c I'm worried about the pipe blowing off.

If anyone made blow thru setup by themselves,
I'd like to hear how you did it.

TIA

 

[allwheelTSI]

after the throttle body elbow? i think that would be a little hard to do with couplers considering the elbow BOLTS on. get the dejon setup,it will work great. in regards to your other question,theoretically,the closer you can get the MAS to the throttle body the better.

 

[herostar]

I see what you mean... I dont' know why it wouldn't work

 

[98eclipseRS]

bro you really should reword what you wrote. I had to read it like five times to finally understand what you were asking. Anyway yes you can put it there but then you will have problems with attach the pipes later beause you will have all that extra lenght put into the intake. Just take it to an exhaust shop or get out a sawzaw(sp?) measure how much you need to take out and cut isnt that hard and will make everything fit better.

edit: just reread what you wrote to make sure i was right in what you are asking and it aint making any damn sense to me.

 

[Firefly]

With that setup you will also be able to vent your bov without the idle problems since it wont count air until after it.

 

[crzsomang]

I'm sorry if I phrased it confusingly...
I guess it was easier for me b/c i was looking at the 2 pictures while typing..
one was a piping setup of regular FMIC and other was the pic above(from dejontool).

I think Herostar and 98eclipseRS understood my questions even with poor phrasing..
so as far as fitment, you guys think it'd clear the battery and other stuff without problems?

Thanks.

 

[nine5raptor]

Do any of you guys that responded know anything about the maft????
Don't give any technical advice unless you have first-hand experience on the subject.
Don't give any technical advice unless you have first-hand experience on the subject.
Don't give any technical advice unless you have first-hand experience on the subject.


crzsomang-- DO NOT put it there, even if it will fit. Think about what the airstream will look like. As the air comes around the elbow, the angular momentum will cause a good portion of the air to go through the firewall side of the sensor causing the first reading error. Then with only part of the throttle body open (i.e. top and bottom) the air will be directed in those directions, instead of through the entire cross-section of the sensor causing reading error #2.

In order for the maf to read correctly, you should leave at least 6" of straight pipe on either side, as in, 6" from the tb elbow and 6" from the bov on the other end.

 

[nine5raptor]

Originally posted by allwheelTSI
in regards to your other question,theoretically,the closer you can get the MAS to the throttle body the better.

The opposite is true. The closer you get to the throttle body, the more reading error you introduce due to air steering.

 

[kpt4321]

nine5raptor is right.

middle of a straight pipe = good.

 

[twenty5psi]

heres a tricky one for all you guroos then..what do you do when you are running a blow through and methanol injection,,one problem is that you have to have the jet nozzle as far from the tb as possible to vaporize the mist you inject meaning that this will go through the mas..now there you go..

 

[nine5raptor]

Originally posted by twenty5psi
heres a tricky one for all you guroos then..what do you do when you are running a blow through and methanol injection,,one problem is that you have to have the jet nozzle as far from the tb as possible to vaporize the mist you inject meaning that this will go through the mas..now there you go..

Put the WI after the maf. It will work fine (as most guys do this) if you inject it into the throttle body elbow.

The atomization of the water/methanol (never run over 50% methanol as it is more likely to knock when added to gasoline) comes from the high pressure flow going through the nozzle. The velocity is high enough, that the flow is purely turbulent and in such a low relative pressure, you get it to 'mist' into the intake stream.