WHERE DID MY BOOST GO?
#1
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WHERE DID MY BOOST GO?
Hey , i just got my cat removed and flowmaster 80 series installed today and i noticed i lost about 2-3 pounds of boost??? is there an explanation to this?
1994 SSEI
Al
1994 SSEI
Al
#2
Junior Member
Posts like a Ricer Type-R
The flow is still there, just that you opened up the exhaust so your INDICATED boost went down. This is somewhat normal.
Imagine trying to blow up a balloon with a hole in the other end. A pressure gauge is in the balloon. Plug the hole, and you can build pressure, move your finger, and it'* easier to blow it up, but the gauge reads lower.
Make sense?
Imagine trying to blow up a balloon with a hole in the other end. A pressure gauge is in the balloon. Plug the hole, and you can build pressure, move your finger, and it'* easier to blow it up, but the gauge reads lower.
Make sense?
#3
So Will, does that mean that when you open up your exhaust you can go to a smaller supercharger pulley to bring the boost back up to where it was before the exhaust pressure reduction, and not require adding an intercooler to cool down the charge.
Hmmm, I think I may have just answered my own question. The supercharger is still going to produce more heat due to the extra heat of compression caused by spinning it faster with the smaller pulley.
Hmmm, So that'* how the get away with not having to add an intercooler at the factory....because there'* so much damn exhaust restriction
I suppose the only real way to determine how close one is to requiring an intercooler would be to monitor Knock Retard.
Hmmm, I think I may have just answered my own question. The supercharger is still going to produce more heat due to the extra heat of compression caused by spinning it faster with the smaller pulley.
Hmmm, So that'* how the get away with not having to add an intercooler at the factory....because there'* so much damn exhaust restriction
I suppose the only real way to determine how close one is to requiring an intercooler would be to monitor Knock Retard.
#4
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i have to jump in here... exaust restriction should have no effect on supercharger boost... less intake restriction will lower the boost pressure because more is getting into the cylinder but exaust restriction should have no effect what so ever, see what i am talking about?
#6
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have to jump in here... exaust restriction should have no effect on supercharger boost... less intake restriction will lower the boost pressure because more is getting into the cylinder but exaust restriction should have no effect what so ever, see what i am talking about?
So Will, does that mean that when you open up your exhaust you can go to a smaller supercharger pulley to bring the boost back up to where it was before the exhaust pressure reduction, and not require adding an intercooler to cool down the charge.
#7
boost problems hehehe
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