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Darren Bak
Tinkerer
qld
TT

Posts: 34
Reg: 02-2013

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Monday, January 13, 2014 - 10:13 am, by:  Darren Bak (Dmb169) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Hi, i have been trying to find out what the a certain sound is associated with when i give the throttle a bit of a kicking :-) sounds like backfire but no where near as loud more softer/fluffy i think it happens when its changing gears, hope that kind of explains the sound
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)

Posts: 765
Reg: 12-2010

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Tuesday, January 14, 2014 - 10:38 am, by:  Scott Vim (1uz1jz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Like a misfire?
Blake Gloyn
Goo Roo
manawatu
soarer JZZ30 TT

Posts: 1071
Reg: 02-2006

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Tuesday, January 14, 2014 - 10:50 am, by:  Blake Gloyn (Blakenz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

if it is between gears, it is the engine retarding the ignition between gears so your trans doesn't get full power at the start of the next gear. The factory gear shift takes quite sometime. My fluttery gear change was no longer, once i installed a MV Automatics shift kitted valve body. The gear change is much faster now, so no flutter.
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)

Posts: 767
Reg: 12-2010

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Tuesday, January 14, 2014 - 12:57 pm, by:  Scott Vim (1uz1jz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

On Lpg the gear changes are even worse. Misfiring as it retards timing. Can you tune that out of the way?

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