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Tippy Tippy is offline
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 7,875
Quote:
Originally Posted by patina View Post
With all of modern technology at your fingertips you would choose to ear trumpet knock? Seriously?
What were you saying????:

The purpose of Det Cans

Detonation Cans, or det cans for short, are to help us hear the sound of detonation in the motor. If you don’t know what detonation sounds like, it is a “ping” sound that the motor will make that some also describe as a “knocking” sound. This is why we often call detonation pinging or knocking a motor. Det cans are earmuffs that are connected to the engine block that allow you to hear the motor better and listen for knock. While some would argue that this is the knock sensors job, most engine tuners find that once a motor has been modified, the knock sensor becomes less accurate as each knock sensor itself is tuned to match a motor set-up very precisely. As you modify the engine you run the risk of taking away the accuracy of the factory knock sensor. Many tuners have reported that knock sensor accuracy becomes considerably bad in forced induction applications where an accurate knock sensor is extremely important.

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source:

http://www.enginebasics.com/EFI%20Tuning/Det%20Cans.html
__________________
Cory - '87 C3.2 (3.4, stock 3.2 heads, cams, intake, with 75mm Mustang TB) Guards/Blk - turbos new to old 1). Borg Warner S366 (66mm comp/73mm turb/0.91 T4 divided ~1.4 bar), 2). Holset HX40 8-blade (58mm/"P" trim 0.84 T4 divided 1.4 bar), 1/4 mile 12.02 @ 129 MPH (street tires), 3). Turbonetics 60-1 HiFi (60mm/"P" trim 0.81 A/R T4 open 1.2 bar), 431whp - MegaSquirt II/EDIS ignition/80lb inj
Old 10-31-2017, 05:49 AM
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