Afe power

[Meanderthal]

My experience with vacuum differs. I installed an Autometer (not an Evil-bay or Jungle website chepo) boost/vacuum gauge and even during deceleration or idol, mine barely falls below below zero if at all. Might be due to the tune, I don't know as I installed the gauge after the tune.

You are measuring the pressure after the turbo, so you will not see much (if any) vacuum. From the turbo to the air filter is where vacuum will be created by the turbo pulling air in. Where you are measuring, the turbo is maintaining the pressure at whatever the ECU is requesting.

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[BLUEOVALRACER]

a few guys in here run the intake. I think maybe @BLUEOVALRACER does? I have been thinking of getting the intake as well for turbo noise.

Bump

I don't have any Mods besides the Pedal Max i had the Flowmaster Flow FX Axle Back but took it off and returned it.

 

[Mwittke5857]

I don't have any Mods besides the Pedal Max i had the Flowmaster Flow FX Axle Back but took it off and returned it.

Never liked NOT hearing an engine run. I've only heard exhaust kits on YouTube and took the chance that the FlowMaster FX (muffler only) would sound as good as it did on the videos. I was/am NOT disappointed! No raspy sound, just a nice deep tone throughout the RPM range. Don't notice any "droning" at all, and I like the look of the tailpipes (don't look like the muffler is off a golf cart) as opposed to the stock ones. I haven't noticed any approach/departure angle issues either. I'm not planning on straight-piping the resonator, it just sounds too good as it is. I do have to ask though, why you returned yours? Did it not fit correctly?

 

[Mark S.]

You are measuring the pressure after the turbo, so you will not see much (if any) vacuum. From the turbo to the air filter is where vacuum will be created by the turbo pulling air in. Where you are measuring, the turbo is maintaining the pressure at whatever the ECU is requesting.

Yup. If you put the sensor in the intake manifold it will show positive pressure when the turbo is providing boost, i.e. high power demand, and negative pressure (vacuum) when you close the throttle. The vacuum occurs because each piston is still moving and pulling in air during their intake stroke. Trying to pull air in with the throttle closed creates a vacuum.

Under typical highway cruising conditions (not accelerating) the needle will hover around zero. If you want to know specifically about the pressure in the intake tract you have to understand what's happening in the different sections.

 

[BLUEOVALRACER]

Never liked NOT hearing an engine run. I've only heard exhaust kits on YouTube and took the chance that the FlowMaster FX (muffler only) would sound as good as it did on the videos. I was/am NOT disappointed! No raspy sound, just a nice deep tone throughout the RPM range. Don't notice any "droning" at all, and I like the look of the tailpipes (don't look like the muffler is off a golf cart) as opposed to the stock ones. I haven't noticed any approach/departure angle issues either. I'm not planning on straight-piping the resonator, it just sounds too good as it is. I do have to ask though, why you returned yours? Did it not fit correctly?

It had to Much Drone IMO but i did like the sound of it and it fit Fine.IMO it seemed like i lost low end Torque and Response even with the Pedal Max. Flowmaster claims a 5 Horsepower gain which might be but at what rpm? And they didn't mention a Torque Gain which makes sense because like i said it seemed like it Lost Low RPM Torque. And also i'm almost 58 years old and i guess i kind of like quiet in my DD and My 82 year old Mom rides in it sometimes i'm sure She wouldn't have liked it..
If i want loud i have this and i even put resonators on it to make it more quiet.

 

[Mwittke5857]

It had to Much Drone IMO but i did like the sound of it and it fit Fine.IMO it seemed like i lost low end Torque and Response even with the Pedal Max. Flowmaster claims a 5 Horsepower gain which might be but at what rpm? And they didn't mention a Torque Gain which makes sense because like i said it seemed like it Lost Low RPM Torque. And also i'm almost 58 years old and i guess i kind of like quiet in my DD and My 82 year old Mom rides in it sometimes i'm sure She wouldn't have liked it..
If i want loud i have this and i even put resonators on it to make it more quiet.

SWEET Fox Body. Sorry to hear your experience was so different than mine. For me, Tilli had a [very] slight improvement "off the line" and to be honest, the roof rack I installed is louder than the muffler! Something I'll have to get used to, it's up there for good

 

[BroncoSportBB_Socal]

Hello
My bronco was the one used on the R&D at aFe
It was used for the intake, 2 types of exhausts (catback & 2 into 1 high clearance), and power module.

I'm very happy with all the mods. I decided to keep the 2 into 1 exhaust. There is nothing wrong with the catback system. In fact I loved the sound of it. The reason I decided not to keep the catback was cause of my daughter ( 3 years at the time). I was unable to hear our conversations while driving around town. So I kept the 2 into 1 and still sounds deeper then stock.

 

[Mwittke5857]

Hello
My bronco was the one used on the R&D at aFe
It was used for the intake, 2 types of exhausts (catback & 2 into 1 high clearance), and power module.

I'm very happy with all the mods. I decided to keep the 2 into 1 exhaust. There is nothing wrong with the catback system. In fact I loved the sound of it. The reason I decided not to keep the catback was cause of my daughter ( 3 years at the time). I was unable to hear our conversations while driving around town. So I kept the 2 into 1 and still sounds deeper then stock.

By intake did you mean their (outstanding fit and finish) air box and filter?

 

[BroncoSportBB_Socal]

By intake did you mean their (outstanding fit and finish) air box and filter?

Yes that one. The air intake box
All these products below

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