bolton gains?
IMO I guess it is something along the lines of subjective factors similar to budget, significant other's pull, and of course, budget.
It would have to relate to what it offers for the price.
IMO I guess it is something along the lines of subjective factors similar to budget, significant other's pull, and of course, budget. 
there are lots and lots of pretty pointless mods out there, and some quite expensive. They either offer little or no gain and can often be detrimental to performane. Research and knowledge is the key.
Now that I think about it, having the priority of a balanced setup is most pertinant, especially at this juncture, with observation, with out accounting for whether or not there would be noticeable gains in any particular area.
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I got essentially a 4% gain across the rpm band from 2000 rpm up with the lid and bellows.
With the y pipe and B&B, I got a 2.5% gain at 2000 rpm up to 4.5% at 6000 and pretty linear.
The peak HP gain was about 20 hp and around 18 ft lb max torque increase. Peak points did not move substantially and the torque curve is essentially flat from 2000 rpms to near 6000 rpms.
All runs were on the same dyno but I avoid using absolute numbers because the individual dyno can make up to a 16% difference or more compared to other dynos and especially other types of dyno IMHO.
smooth bellows
ported or bigger mm mass air sensor
ported or bigger mm throttle body
new intake mani
plugs
wires
ud pulley
headers
y-pipe
cat back
gears
suspencion parts
better rubber
and a good tune
A bolton is good when it incorporates all the characterisitcs of a solid component. For instance, the tangible SOTP pull you might feel from upgrading your MAF and the gains you would feel floating around up top would be amplified big time when you add similar hot rod components to the picture. Therefore, in this particular case the crux of the matter is what component(s) are going to be beneficial for you to come out on top in the long run--keep that in mind. As simple as that is hyes, but as complicated as it works in real life no; there are tons of combinations that would yield better results [if you follow it through] as a whole that something as an arbitrary example of changing your mass airflow sensor and the external mods that you should see go along with it.
smooth bellows
ported or bigger mm mass air sensor
ported or bigger mm throttle body
new intake mani
plugs
wires
ud pulley
headers
y-pipe
cat back
gears
suspencion parts
better rubber
and a good tune
...seriously





