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SolaraGuy.com • View topic - headers drop boost pressure?

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headers drop boost pressure?

http://solaraguy.com/viewtopic.php?f=23&t=51559

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headers drop boost pressure?

PostPosted: Sat May 14, 2011 3:50 pm
by hskrsolara
So, I've confirmed a drop in boost with my OBX headers. I lost about 1 lb on my 5.5 psi pulley (currently maxing out at 4.5 psi and spiking to 5 psi on my gauge) after I ditched the oem headers/dats y pipe/evo2 for the new OBX headers/OBX y pipe/OBX 3 in exhaust.

I've acquired that this is normal, for opening up the exhaust to drop boost slightly? I haven't made any other changes, just the exhaust system, and instantly lost .5-1 lb of boost. Planning on installing the 6.5 psi pulley to get back to 5.5-6 lb of effective boost and spike to 6.5 lb. Is this the right approach? Anyone else seeing the same thing?

Re: headers drop boost pressure?

PostPosted: Sat May 14, 2011 6:28 pm
by corlon
i'm not boosted, but i know this is a common issue. makes sense. a buddy had the same issue with his supercharger mustang.

Re: headers drop boost pressure?

PostPosted: Sat May 14, 2011 7:35 pm
by 1gSE
It'll happen. PSI is just resistance.You're still moving the same amount of air, you're just doing it more efficiently now that it breathes better
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