BIGBOOST is a scam -boost test- VID
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Senior User
Joined: Aug 2005
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BIGBOOST is a scam -boost test- VID
so i decided to jump on the scam wagon and give this a shot, bought a boost gauge just to see what my stock boost is and found a stop sign, spooled up and let off the brake and recorded the boost gauge to see what psi it will max out at. so in stock form im seeing 16-17psi went from 0-60 in about 13 seconds
then i installed this fancy shmancy BIGBOOST that supposed to give you more boost, more HP and better MPG and i did the same test from the same stop sign, in the same manner, and here are the results to that, 0-60 results actually seem a little slower, but maybe i let off the gas dont remember.
then i installed this fancy shmancy BIGBOOST that supposed to give you more boost, more HP and better MPG and i did the same test from the same stop sign, in the same manner, and here are the results to that, 0-60 results actually seem a little slower, but maybe i let off the gas dont remember.
Butt-Head
Joined: Apr 2004
Posts: 9,448
Likes: 2,934
From: Reed Point, MT
I guess I can't be too sympathetic in this case. If your filter restriction gauge isn't being "pulled down" when using your stock filter box and paper filter, what makes you think that adding a different filter housing (or lack thereof in this case) will make ANY difference at all?
See my signature. This is why I loathe the automotive aftermarket. Don't feel too bad though, we've all been "taken" at some point.
See my signature. This is why I loathe the automotive aftermarket. Don't feel too bad though, we've all been "taken" at some point.
4000 rounds a min
Joined: Apr 2010
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From: Albemarle NC
Elder User
Joined: Jan 2012
Posts: 695
Likes: 1
From: Littleton, CO
No prob,
There were 2 style's of gauge clusters - forget what year they started changing.
But, just thought I'd point that out so the CEL wasn't a focal point...
As to what Cleatus mentioned - i'd be curious if you didn't have some other leaks somewhere
1) Stock up pipes?
2) have you done a pressure test of your system?
3) loose bolts at the back of your plenum
etc...
Not trying to argue, but may be worth while to check all this before trying to add something - and then blaming it when it can't do what it's supposed to due to other faults...
There were 2 style's of gauge clusters - forget what year they started changing.
But, just thought I'd point that out so the CEL wasn't a focal point...
As to what Cleatus mentioned - i'd be curious if you didn't have some other leaks somewhere
1) Stock up pipes?
2) have you done a pressure test of your system?
3) loose bolts at the back of your plenum
etc...
Not trying to argue, but may be worth while to check all this before trying to add something - and then blaming it when it can't do what it's supposed to due to other faults...
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Senior User
Joined: Mar 2007
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From: Huntsville, AL
Do you have a tuner on your truck? If not, then you most likely won't see any higher boost levels with just this BIGBOOST item installed. Unless I'm mistaken, the BIGBOOST (or similar items) simply set a cap on the pressure the MAP sensor will see, preventing the truck from defueling when it hits about 22psi. In stock tune, these trucks rarely see north of 20psi, so you may not see any more boost without a tuner (assuming you aren't running one already). Just a thought.
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Elder User
Joined: Jan 2012
Posts: 695
Likes: 1
From: Littleton, CO
Do you have a tuner on your truck? If not, then you most likely won't see any higher boost levels with just this BIGBOOST item installed. Unless I'm mistaken, the BIGBOOST (or similar items) simply set a cap on the pressure the MAP sensor will see, preventing the truck from defueling when it hits about 22psi. In stock tune, these trucks rarely see north of 20psi, so you may not see any more boost without a tuner (assuming you aren't running one already). Just a thought.
That's an excellent point!
Senior User
Joined: Mar 2007
Posts: 107
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From: Huntsville, AL
Oh and BTW, there is no product on the market that will give you more Boost, HP and MPG. Sure, there are plenty that will increase boost and HP, however, as soon as those increase, so does the weight of your right foot. At that point, you need to rearrange the letters to GPM. 
Thread Starter
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Senior User
Joined: Aug 2005
Posts: 112
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Do you have a tuner on your truck? If not, then you most likely won't see any higher boost levels with just this BIGBOOST item installed. Unless I'm mistaken, the BIGBOOST (or similar items) simply set a cap on the pressure the MAP sensor will see, preventing the truck from defueling when it hits about 22psi. In stock tune, these trucks rarely see north of 20psi, so you may not see any more boost without a tuner (assuming you aren't running one already). Just a thought.
No prob,
There were 2 style's of gauge clusters - forget what year they started changing.
But, just thought I'd point that out so the CEL wasn't a focal point...
As to what Cleatus mentioned - i'd be curious if you didn't have some other leaks somewhere
1) Stock up pipes?
2) have you done a pressure test of your system?
3) loose bolts at the back of your plenum
etc...
Not trying to argue, but may be worth while to check all this before trying to add something - and then blaming it when it can't do what it's supposed to due to other faults...
There were 2 style's of gauge clusters - forget what year they started changing.
But, just thought I'd point that out so the CEL wasn't a focal point...
As to what Cleatus mentioned - i'd be curious if you didn't have some other leaks somewhere
1) Stock up pipes?
2) have you done a pressure test of your system?
3) loose bolts at the back of your plenum
etc...
Not trying to argue, but may be worth while to check all this before trying to add something - and then blaming it when it can't do what it's supposed to due to other faults...
whats a plenum?
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Slowing things down a bit:
If your truck is bone stock, your boost is pretty close to what it should be. Nice tire scratch, was that a corner?
Testing for leaks should be done at 10-15 PSI (search "boost leak detector") because you're going to have air pushing backwards through the Crank Case Ventilation (CCV). You'll hear hissing all over the place, so you need to use a spray bottle with soapy water (I used Simple Green - it degreases while I'm at it) on everything boost related (not the exhaust side). I had a leak in my plenums, so I replaced them with fancy ones. If you want to see where the plenums are, click the plenum link in my signature. Follow all the pipes and locate every connection - almost every connection has a boot.
If your truck is bone stock, your boost is pretty close to what it should be. Nice tire scratch, was that a corner?
Testing for leaks should be done at 10-15 PSI (search "boost leak detector") because you're going to have air pushing backwards through the Crank Case Ventilation (CCV). You'll hear hissing all over the place, so you need to use a spray bottle with soapy water (I used Simple Green - it degreases while I'm at it) on everything boost related (not the exhaust side). I had a leak in my plenums, so I replaced them with fancy ones. If you want to see where the plenums are, click the plenum link in my signature. Follow all the pipes and locate every connection - almost every connection has a boot.
Elder User
Joined: Jan 2012
Posts: 695
Likes: 1
From: Littleton, CO
The Plenum is where the intake manifold connects via the boot to the head of the engine. Again, as Tugly pointed out in his sig, it's the black plate, with the blue towel in it.
Those (factory) rear bolts have been known to loosen themselves, creating pressure leak.
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Senior User
Joined: Aug 2005
Posts: 112
Likes: 0
Slowing things down a bit:
If your truck is bone stock, your boost is pretty close to what it should be. Nice tire scratch, was that a corner?
Testing for leaks should be done at 10-15 PSI (search "boost leak detector") because you're going to have air pushing backwards through the Crank Case Ventilation (CCV). You'll hear hissing all over the place, so you need to use a spray bottle with soapy water (I used Simple Green - it degreases while I'm at it) on everything boost related (not the exhaust side). I had a leak in my plenums, so I replaced them with fancy ones. If you want to see where the plenums are, click the plenum link in my signature. Follow all the pipes and locate every connection - almost every connection has a boot.
If your truck is bone stock, your boost is pretty close to what it should be. Nice tire scratch, was that a corner?
Testing for leaks should be done at 10-15 PSI (search "boost leak detector") because you're going to have air pushing backwards through the Crank Case Ventilation (CCV). You'll hear hissing all over the place, so you need to use a spray bottle with soapy water (I used Simple Green - it degreases while I'm at it) on everything boost related (not the exhaust side). I had a leak in my plenums, so I replaced them with fancy ones. If you want to see where the plenums are, click the plenum link in my signature. Follow all the pipes and locate every connection - almost every connection has a boot.
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