Thunder torque Inserts
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Road Captain
Joined: May 2008
Posts: 564
Likes: 6
From: Wyoming USA
Thunder torque Inserts
Had a set of Quiet baffles in my TC88 V&H longshots ran pretty good and sounded great , lost 1 baffle on a road trip do decided to go with some TQ 158 INSERTS. They gave me some torque back but are to loud and I get about 15 mpg less and now my pc 3 map is off .Does this require a new map or will it learn after a few rides? Just kind of bummed about them thought they were a plug / play
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
The problem isn't the TTIs. It was the quiet baffles. Your exhaust was restricted and you were mapped for the loss of hp you had with them. TTIs give you the torque without being restrictive or causing a loss of hp. If your more concerned with being quiet than performance, put the quiet baffles back in. Otherwise yes, you'll have to map for the new exhaust.
Last edited by 60Gunner; Jan 11, 2023 at 10:10 PM.
Outstanding HDF Member
Joined: Mar 2018
Posts: 2,773
Likes: 2,260
From: Ft. Wayne IN
The problem isn't the TTIs. It was the quiet baffles. Your exhaust was restricted and you were mapped for the loss of hp you had with them. TTIs give you the torque without being restrictive or causing a loss of hp. If your more concerned with being quiet than performance, put the quiet baffles back in. Otherwise yes, you'll have to map for the new exhaust.
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