no back box on a pulsar?

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Anonymous

Guest
was talking to a guy with a pulsar gti-r and he was running a custom system but it dint actually have a backbox it just had the system then a tailpipe on the end,is back pressure not an issue?is anyone else running this kind of system?
 
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LeeSmith

Member
a turbo charged car does not need back pressure like a NA car does. a lot of people use the mongoose system which has no back box. basically the less restrictive the exhaust (i.e no bends or restrictive box like a cat or back box), the better the engine can get rid of the waste gas.

that's my view anyway.....i'm sure sum 1 will come with a technical answer for you in a minute!!
 
Mr GTiR

Mr GTiR

New Member
the Mongoose 2 1/2" exhaust system does not have a back box :D

No back box is needed on a turbo charge motor :twisted:
 
A

Anonymous

Guest
cool,im a welder/fabricator by trade so a new tail pipe minus the box may have to be made :D
 
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ashills

Active Member
some factory turbos will break down on the oil seals if all the boxes are removed
stuff like the cossies on standard turbos
if u go straight through on teh exhaust it will smoke on idle and can when driving also
most decent hybrids have a good doublestack/uprated oil seal to coup with low back pressure though
 
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GTiRich

Guest
Yeah I had a custom system built too without a back box. It's just got a couple of sections of 5" pipe to keep the noise down and the neigbours happy :lol:
 
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Stevo

New Member
i have no back box either, custom made 2 34" pipe copied from a mongoose system. proper loud i tell thee :cry:
 
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Anonymous

Guest
is that a `i dont like the loudness lol`? the system i have is a custom full stainless with a small backbox with a 4` tailpipe does sound nice but just want it louder!!
 
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Websnowbo

New Member
Careful though......i had a Trust system on one a mine a few years back and i thought feck it i'l remove the back box.



Was sooo fcukin loud....if a system isnt designed to have no back box i.e the Mongoose it will be mega loud as it is probably straight through without the box.
 
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andygtir

Member
i thought the mongoose had a small silencer where the cat was?????

mine is totally unsilenced, litterally a piece of pipe front to back and its fecking LOUD!!! can be heard well over a mile away just cruising. the pops and bangs that you get from the mongoose are now explosions and ground shaking thuds :twisted: :twisted: :twisted:

made much better power throughout the rev range once fitted, especially top end. picks up much better.
 
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Stevo

New Member
mongoose have the option on removing the middle box were the cat would go. so like urs its a striaght through :p
 
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andygtir

Member
ah! so i guess your neighbours no longer talk to you now! i used to think i live in a friendly area... :lol: :twisted:
 
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Anonymous

Guest
999...... which service do you require...police please :evil: ....... hi there what seems to b the problem?..... well theres a car outside with a loud exhaut...rite..... quick lads drop the murder case lets go slap some wrists :lol: :lol: fook me av people nothing else better to do!!
 
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Stevo

New Member
LOL
tell me about it mate, sometimes they even wait in my road for me :roll: , once im on my porivate land i lock my 6ft gates and ignore them haha
 
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Anonymous

Guest
lol i stopped the coach building for 5 mins today and done me zaust it already had a stainless system de catted,so chopped the back box welded on a straight pipe then added a 4` pipe for the tailpipe handy bein a welder as it wd o probably cost me loads, looks and sounds spot on :lol: :lol: :lol: well chuffed :lol:
 
c20ona

c20ona

Member
i thought about doing this little conversion as well but just need to know one thing, will the removal of the rear box cause any changes in the fueling ? (richer/leaner).I maybe asking a dumb question here but wanted to check before i go all gung-ho.

cheers

kendo
 
Fast Guy

Fast Guy

Moderators
Staff member
c20ona said:
will the removal of the rear box cause any changes in the fueling ? (richer/leaner).
cheers

kendo
Click to expand...
Well, I put the mongoose on and it has no back box and a year on my engine hasn't blown.
In theory it should affect fuelling, but it can obviously cope well enough to compensate for it.
 
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