S3 MAP sensor relocate?

[Scullies]

Would it be OK to relocate the MAP sensor to the intake manifold or does it need to be before the TB?

 

[Lemon S3]

I think it needs to be before the TB to get the best amount of air onto the sensor but I'm just guessing. Why do you want to move it anyway?

 

[Sevv]

probably makes life easier when fitting an FMIC it think

 

[beachbuggy]

After throttle body will show a - value at idle! Before TB will always be atmospheric pressure or more. It has to be before TB

 

[sideways steve]

really it depends on the sensor as some MAP sensors will not read a -ve value and as such can be mounted in teh inlet manifold without any issues. Most jap stuff tends to have the MAP sensor mounted in the inlet manifold.

 

[<tuffty/>]

I would leave it in the main charge pipe system else you will end up confusing the ECU and may get running probs...

If making custom FMIC pipework just get a Forge MAP tube in the ID you want and weld that in..

Forge Motorsport | Alloy Fabrication

<tuffty/>

 

[badger5]

really it depends on the sensor as some MAP sensors will not read a -ve value and as such can be mounted in teh inlet manifold without any issues. Most jap stuff tends to have the MAP sensor mounted in the inlet manifold.

this is a 1.8t..
it reads both vac and pressure... me7 cant make sense of vac however so it must be non vac located, ideally as vag designed it, before throttle, after intercooler

 

[Scullies]

Thanks for the replies guys, going to fit a FMIC and want to change all the piping. Have to get a FMIC locally as its too costly to ship one over.
That forge pipe looks interesting, thanks Tuffy, might ship one of those over

 

[<tuffty/>]

I used the Forge tube in my setup...

Shame really as I am making a new one when I fit the larger inlet...

<tuffty/>