hey thanks for the pic. I really appreciate it. and yea yea I know i should go recirc, but trust me This little town of blacksburg has never seen (heard) anything like my car. With so many sti's in town, its the major grabber of attention on weekend nights. It is so fantastically loud when it echoes off the shops on both sides of the busy downtown streets. I think a little richness is worth it.. at least for now.. plus I've already got the fastest evo in town (0f the 3 there are) so I'm not really worried about super fine tune performance. ..again though, thankx..

 

kinda hard to see..... my camera was fogging up..

 

cool

 

anyone know of the possibility/problems associated with moving the MAS to before the throttle body? Only thing I can think of is leaking of boost b/c its not originally designed to be under pressure. But maybe with the right adapter I can make the intake side of it airtight?

 

There are more technical reasons why the Mass Airflow Sensor (MAS) wasn't put just before the throttle body than I can cover here. But here's an important one:

The MAS measures the flow of air before the turbo. Placing the MAS after the turbo (if it can handle the temperature difference) will read a lower airflow number since the air is compressed. Reading the airflow of the compressed air might result in a lean condition which could be dangerous if it's way off.

The MAS is there to measure airflow of the uncompressed air, not the compressed air. Remember that the uncompressed air's barometric pressure changes very little if at all. As we all know the compressed air coming out of the turbo can be anywhere from normal outside air pressure to the max that your boost controller allows (which is 19 PSI stock). The stock ECU is not programmed to use the MAS reading placed after the turbo.

For most people here, when they want to move away from MAS; move to using a Manifold Air Pressure (MAP) sensor instead. But that requires an aftermarket piggy-back or stand-alone ECU set up.

Why do you want to move the MAS anyways?

 

So theres nothing wrong w/ gettin the HKS SSbov w/ recir. kit?.. I mean as long as its done correctly, I should have no problem..... right?

 

mine is recirc, and runs fine
see above pic

 

just curious to solve my vta troubles without goin recirc... your right, plus it would be negative when you get compressor surge or flutter from immedate relief of throttle the maf would detect a whole lot of air... suppose its not a good Idea, I was just asking because of the existance of the UR maf that goes before the tb. But I understand that it must probably be calibrated for these anomolies... just trying to find an easy way out without eids or recirc. guess not.