Atmosphere Blow-Off Conversion

[sixpatch]

Ok. Laugh at me all you want, but I want the classic turbo "Hiss" when I shift. My October 86' Mk3 is all stock, and I'm just looking for different ways to blow off to atmo and not kill the engine when I come to a stop, or run way too rich. I know you guys have to have done this before. How many ways are there to do this? Do I need to get a perfomance MAF to get my car to run right after I do it? Gimme the full run down, as I'm new to Turbo's and Supra's. Thanks!

 

[mkiiichip]

You need a translator to get rid of the MAF. Otherwise that escaping metered air will cause the conditions you describe.
Lookup maft pro.

 

[CyFi6]

Unless you convert to speed density you run the chance that you will have those problems like mkiiichip already said. Many people still do it without any modification and dont have any major issues, but do you really want to reduce your performance just for the sound? Just leave it recirculated or convert over to a map system.

 

[89supra7mgte]

Doesnt the apexi safc have a setting for decel air, for situations like this? i may be wrong but thought i read about it before purchasing mine?

 

[RazoE]

just leave it in gear after blowing off, and engine brake..

it's crude, but it works.

I did this for a while, but now I'm properly recirculating it..

 

[A. Jay]

If you get a airfilter kit that isn't a cold-air one you'll hear the sound with the stock recirculated bov.

 

[sixpatch]

Thanks Jay. I was wondering about that. Thanks to everyone else also. I'm gonna look into the MAFT. Anyone know of a good source for one?