3400 RSM S/C - ALL Threads Combined

[john_V63400]

Whats up with the wack upshifts with NO MAF can an1 explain that

[john_V63400]

Smaller pully theory

I was thinking............
I build boost off of RPMS
So if I had a smaller pully on the S/C driveshaft I could build more boost at lower rpms right/ or no
Lower RPM's would help the belt from slipping too/ Y or N
then I could get more instant boost.
More lower end power from more boost at lower RPMs
Would a smaller pully do the job

[IsaacHayes]

You would spin the supercharger faster, so boost would come on quicker and the max boost would be higher.

The belt would slip more because you are spinning the SC faster and thus there would be more load on the belt.

[john_V63400]

MAP/MAF Q's on 01 GA GT

When I dynoed my car they didnt believe me when i told them Im missing my MAF cause they said it reads its air from the MAP.
They said usually cars only have 1 source of air volume reading.
That is either MAP, MAF and sum other thing I forgot
Why does my car have both then Do all GA have a MAP and MAF
Can someone explain this so I could let then know

[john_V63400]

yeah on the S/C pully thier will be more load, not on the other pully's right.
im not worried on the S/C pully sliping cause its the other pullies that slip.

[IsaacHayes]

The computer reads the MAF to know where the engine is at so it can adjust transmission pressure. Lower pressure when the engine is not accelerating hard, for smooth shifts. When it reads its flowing a lot and making power, it ups the pressure for a quicker shift and less slippage.

When it has no signal from the MAF it ups the pressure to max to protect the trans because it doesn't know how much power the motor is making. That way if you are flooring it, it doesn't know this but since it's running full pressure the trans will shift quick.

So you need a MAF or you will wear out the trans pump since it's pressure is at max all the time. I bet the trans whines pretty loud just sitting there.

Hehe I've killed 5.0's when my car was stock. They always are like WTF but I have a mustang.

I was exactly right about how they tuned it and how it behaves. It's bad aided now and won't damage the motor when in boost, but at idle, and cruise you will be running rich which will lower MPG, and wash the cylinders with gas. I bet your oil will smell rich of gas now.

You really need to stop thinking about it and just put the MAF on. Then tune it for real. Then you won't be posting questions and problems all the time. The car will run great and you'll have more fun and can relax.

[sprucegagt]

Whats up with the wack upshifts with NO MAF can an1 explain that

You would know this if you would read all the previous threads you've made asking the same thing.

[IsaacHayes]

Which ones slip? Probably the crank pulley slips.

Does the tensioner bounce at idle? If so replace it with a new one. If it's bouncing the spring is weak in it and that won't help with belt slipage.

[sprucegagt]

yeah on the S/C pully thier will be more load, not on the other pully's right.
im not worried on the S/C pully sliping cause its the other pullies that slip.

This makes no sense.

[john_V63400]

maybe I will have a local CAD shop make all new pullys with different ribs. stronger that is

[Baldeagle242]

im not worried on the S/C pully sliping cause its the other pullies that slip.

The other pulley (Crank Pulley, the only other one that could be slipping) will slip worse. If it is already the one slipping it will be working harder to turn an even harder to turn smaller pulley on your SC.

[JMo60]

maybe I will have a local CAD shop make all new pullys with different ribs. stronger that is.

I dont understand, why would your pulleys slip so terribly, with a supercharger, some pulley/belt slip is normal, but i really dont think that i would go with a complete custom pulley set up. Custom pulleys probably wont help anyway just make thing worse imo.

[john_V63400]

I can see the ribs on the belt, the belt is abnormally wearing, Im going to add a new belt and tighten it.

[john_V63400]

You never learn untill it happens to you spruce.
Like a kid eating too much candy, then gets cavities and tooth aches.
You dont listen till it happens to you. Then you gain experience from your own mistakes.

[john_V63400]

Well all you people telling me to put my MAF dont know why I have a MAP and a MAF.