Straight through pipe? no back box and a very good cam. POP POP BANG POP.
Popping Exhaust On Deceleration?
Started by
Magic jason
, Jan 26 2012 10:41 PM
45 replies to this topic
#17
Magic jason
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Super Mini Mad
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Posted 26 January 2012 - 11:34 PM
dont want to have to shed for a new cam, nor take out the engine! cant rid the back box either because it is soo loud!
#18
thebullet
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One Carb Or Two?
Posted 26 January 2012 - 11:36 PM
Unless it is not set up correctly, or speced up it wont be popping really.
#19
Magic jason
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Posted 26 January 2012 - 11:37 PM
hmm, i might have a play with the carb again tomorrow, mates mini pops like crazy and it standard just with a stupid exhaust :L
#20
thebullet
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One Carb Or Two?
Posted 26 January 2012 - 11:42 PM
Not a proper exhaust 
#21
Magic jason
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Posted 26 January 2012 - 11:44 PM
its not :L standard manifold, then a converter up to 3 inch, 3 inch link pipe then twin 3 inch tailpipes :L
#22
thebullet
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One Carb Or Two?
Posted 26 January 2012 - 11:45 PM
3inch?! losing so much performance their, should be 1.75" to be perfect.
#23
Magic jason
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Posted 26 January 2012 - 11:46 PM
thats what i tell everyone with a stupid garbage can sized exhausts! and then i provide maths along with it yet they still dont agree!
#24
thebullet
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One Carb Or Two?
Posted 26 January 2012 - 11:47 PM
Up to them! but it is just logical to have the correct pressure. And anyway, big exhaust don't look right on a Mini. Stupid!
#25
Magic jason
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Posted 26 January 2012 - 11:48 PM
agreed kind of going off topic again! thou i believe i have my answer
kind of going off topic again! thou i believe i have my answer
#26
thebullet
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One Carb Or Two?
Posted 26 January 2012 - 11:49 PM
haha, just have a fiddle about with the carb. My advice though would be to not overly run it lean or rich and adjust one thing at a time, so if it does go wrong, atleas you know what you changed for it to happen.
#27
Magic jason
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Posted 26 January 2012 - 11:50 PM
yeah thats the plan :) cheers!
#28
liirge
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Posted 26 January 2012 - 11:53 PM
By the way it would be a rich mixture, not a lean mixture.
#29
Magic jason
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Posted 26 January 2012 - 11:55 PM
swear you can get lean pops thou?
#30
Tahiti Joe
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Posted 27 January 2012 - 12:03 AM
Mine pops all the time on deceleration and let off, especially amusing when driving through a tunnel, dropping back, giving it some beans and then let off.... Just listen too the pops and bangs! 
It's a fairly standard 1275, the pops and bangs started too appear after changing the exhaust for a single box Maniflow 1.75 system... My old twin box set up never did it, nor when it had a cat...! Carbs a HIF44, with a K&N, a custom lathed needle and has been professionally tuned... It also only ever runs on 99RON fuel, which seems too make a difference too the 'poppiness'!
It's a fairly standard 1275, the pops and bangs started too appear after changing the exhaust for a single box Maniflow 1.75 system... My old twin box set up never did it, nor when it had a cat...! Carbs a HIF44, with a K&N, a custom lathed needle and has been professionally tuned... It also only ever runs on 99RON fuel, which seems too make a difference too the 'poppiness'!
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